Pull request #5: RED-6126
Merge in RED/ocr-service from RED-6126 to master * commit '00cfe9e44948c153857ad59442dbc9349e1d4555': RED-6126: In the OCRService, OCR Text is not applied to Document *reformatted InvisibleElementRemovalService with new Code Style RED-6126: In the OCRService, OCR Text is not applied to Document *updated some comments *very slight refactor RED-6126: In the OCRService, OCR Text is not applied to Document *complete refactor of the OCRService *moved image position retrieval to new class instead of image service *added new tests for image rotation RED-6126: In the OCRService, OCR Text is not applied to Document *removed private configuration RED-6126: In the OCRService, OCR Text is not applied to Document *formatted one line RED-6126: In the OCRService, OCR Text is not applied to Document *reverted application of OCR Text to Document to old state *refactored OCR Service slightly *added meaningful test cases
This commit is contained in:
Kilian Schuettler
Dominique Eiflaender
commit
b0a658213d
@ -0,0 +1,177 @@
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package com.iqser.red.service.ocr.v1.server.service;
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import java.awt.geom.Point2D;
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import java.awt.geom.Rectangle2D;
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import java.awt.geom.RectangularShape;
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import java.util.Comparator;
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import java.util.HashMap;
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import java.util.LinkedList;
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import java.util.List;
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import java.util.Map;
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import org.springframework.stereotype.Service;
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import com.pdftron.common.Matrix2D;
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import com.pdftron.common.PDFNetException;
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import com.pdftron.pdf.Element;
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import com.pdftron.pdf.ElementReader;
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import com.pdftron.pdf.PDFDoc;
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import com.pdftron.pdf.Page;
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import com.pdftron.pdf.Rect;
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import com.pdftron.pdf.RectCollection;
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import lombok.SneakyThrows;
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@Service
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public class ImagePositionRetrievalService {
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private static final double TOLERANCE = 1e-1;
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/**
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* Iterates over all elements in a PDF Document and retrieves the bounding box for each image,
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* Then it adjusts the bounding boxes for the page rotation.
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* If the mirrorY flag is set, the Y Coordinates are mirrored and moved up by the page height. This is required for PDFTrons OCRModule.
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*
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* @param pdfDoc a PDF File as PDFTron PDFDoc class
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* @param mirrorY if this flag is set, all coordinates are calculated with upper left corner as (0,0), else initial user space
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* @return a map with the page indices as keys and the image bounding boxes on that page as a RectCollection
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*/
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@SneakyThrows
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public Map<Integer, RectCollection> getImagePositionPerPage(PDFDoc pdfDoc, boolean mirrorY) {
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Map<Integer, RectCollection> pageIdToImagePositions = new HashMap<>();
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ElementReader reader = new ElementReader();
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for (int pageId = 1; pageId <= pdfDoc.getPageCount(); ++pageId) {
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RectCollection imagePositions = new RectCollection();
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reader.begin(pdfDoc.getPage(pageId));
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findImagePositionsOnPage(reader, imagePositions, pdfDoc.getPage(pageId), mirrorY);
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imagePositions = mergeOverlappingRects(imagePositions);
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reader.end();
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if (imagePositions.getNumRects() > 0) {
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pageIdToImagePositions.put(pageId, imagePositions);
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}
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}
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return pageIdToImagePositions;
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}
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private void findImagePositionsOnPage(ElementReader reader, RectCollection imagePositions, Page currentPage, boolean mirrorY) throws PDFNetException {
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Element element;
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while ((element = reader.next()) != null) {
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switch (element.getType()) {
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case Element.e_image, Element.e_inline_image -> imagePositions.addRect(toRotationAdjustedRect(element.getBBox(), currentPage, mirrorY));
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case Element.e_form -> {
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reader.formBegin();
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findImagePositionsOnPage(reader, imagePositions, currentPage, mirrorY);
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reader.end();
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}
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}
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}
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}
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@SneakyThrows
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public RectCollection mergeOverlappingRects(RectCollection imagePositions) {
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if (imagePositions.getNumRects() == 1) {
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return imagePositions;
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}
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List<Rectangle2D> rectangleList = toSortedRectangleList(imagePositions);
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rectangleList = mergeRectangleListRecursive(rectangleList, 0);
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return toRectCollection(rectangleList);
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}
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// Sometimes images are split up into stripes, here we merge the positions of aligned and intersecting rectangles into one larger rectangle
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private List<Rectangle2D> mergeRectangleListRecursive(List<Rectangle2D> rectangleList, int currentIdx) {
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if (rectangleList.size() < currentIdx + 2) {
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return rectangleList;
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}
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var rect1 = rectangleList.get(currentIdx);
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var rect2 = rectangleList.get(currentIdx + 1);
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boolean isAlignedX = Math.abs(rect1.getMinX() - rect2.getMinX()) < TOLERANCE && Math.abs(rect1.getMaxX() - rect2.getMaxX()) < TOLERANCE;
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boolean isAlignedY = Math.abs(rect1.getMinY() - rect2.getMinY()) < TOLERANCE && Math.abs(rect1.getMaxY() - rect2.getMaxY()) < TOLERANCE;
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boolean intersects = rect1.intersects(rect2.getMinX() - TOLERANCE, rect2.getMinY() - TOLERANCE, rect2.getWidth() + (2 * TOLERANCE), rect2.getHeight() + (2 * TOLERANCE));
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if (intersects && (isAlignedX || isAlignedY)) {
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rectangleList.remove(currentIdx + 1);
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rectangleList.remove(currentIdx);
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rectangleList.add(currentIdx, rect1.createUnion(rect2));
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return mergeRectangleListRecursive(rectangleList, currentIdx);
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} else {
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return mergeRectangleListRecursive(rectangleList, currentIdx + 1);
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}
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}
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private Rect toRotationAdjustedRect(Rect bbox, Page page, boolean mirrorY) throws PDFNetException {
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int rotation = page.getRotation();
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double height = page.getPageHeight();
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double width = page.getPageWidth();
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// Even though PDFTron almost always has the origin in the lower left corner, for some reason, the OCRModule's addTextZonesForPage() uses the upper left corner as origin...
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Matrix2D mirrorMatrix;
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if (mirrorY) {
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mirrorMatrix = new Matrix2D(1, 0, 0, -1, 0, height);
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} else {
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mirrorMatrix = new Matrix2D();
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}
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// We need to rotate the rects to fit to the page rotation
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Matrix2D rotationMatrix = switch (rotation) {
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case 1 -> new Matrix2D(0, -1, 1, 0, 0, height);
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case 2 -> new Matrix2D(-1, 0, 0, -1, width, height);
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case 3 -> new Matrix2D(0, 1, -1, 0, width, 0);
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default -> new Matrix2D();
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};
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Matrix2D finalMatrix = mirrorMatrix.multiply(rotationMatrix);
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Point2D.Double p1 = finalMatrix.multPoint(bbox.getX1(), bbox.getY1());
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Point2D.Double p2 = finalMatrix.multPoint(bbox.getX2(), bbox.getY2());
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// PDFTron Rect *needs* lower left and upper right coordinates to calculate width and height correctly, even though the documentation states otherwise
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Point2D.Double lowerLeft = new Point2D.Double(Math.min(p1.x, p2.x), Math.min(p1.y, p2.y));
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Point2D.Double upperRight = new Point2D.Double(Math.max(p1.x, p2.x), Math.max(p1.y, p2.y));
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return new Rect(lowerLeft.x, lowerLeft.y, upperRight.x, upperRight.y);
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}
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private RectCollection toRectCollection(List<Rectangle2D> rectangleList) {
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RectCollection rectCollection = new RectCollection();
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rectangleList.forEach(r -> {
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try {
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rectCollection.addRect(new Rect(r.getMinX(), r.getMinY(), r.getMaxX(), r.getMaxY()));
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} catch (PDFNetException e) {
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throw new RuntimeException(e);
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}
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});
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return rectCollection;
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}
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@SneakyThrows
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private List<Rectangle2D> toSortedRectangleList(RectCollection rectCollection) {
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List<Rectangle2D> list = new LinkedList<>();
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for (int i = 0; i < rectCollection.getNumRects(); ++i) {
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Rect r = rectCollection.getRectAt(i);
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list.add(new Rectangle2D.Double(r.getX1(), r.getY1(), r.getWidth(), r.getHeight()));
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}
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list.sort(Comparator.comparingDouble(RectangularShape::getMinY).thenComparing(RectangularShape::getMinX));
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return list;
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}
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}
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@ -423,12 +423,13 @@ public class InvisibleElementRemovalService {
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@Builder
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private record InvisibleElementRemovalContext(boolean delta, //
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ElementReader reader, //
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ClippingPathStack clippingPathStack, //
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List<ElementFeatures> overlappedElements, //
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List<ElementFeatures> visibleElements, //
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Set<Long> visitedXObjIds) {
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private record InvisibleElementRemovalContext(
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boolean delta,
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ElementReader reader,
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ClippingPathStack clippingPathStack,
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List<ElementFeatures> overlappedElements,
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List<ElementFeatures> visibleElements,
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Set<Long> visitedXObjIds) {
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}
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@ -1,12 +1,7 @@
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package com.iqser.red.service.ocr.v1.server.service;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.InputStream;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import org.springframework.amqp.rabbit.core.RabbitTemplate;
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@ -15,11 +10,8 @@ import org.springframework.stereotype.Service;
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import com.fasterxml.jackson.databind.ObjectMapper;
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import com.iqser.red.service.ocr.v1.api.model.OCRStatusUpdateResponse;
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import com.iqser.red.service.ocr.v1.server.configuration.MessagingConfiguration;
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import com.iqser.red.service.ocr.v1.server.model.ImagePosition;
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import com.iqser.red.service.ocr.v1.server.model.image.ImageServiceResponse;
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import com.iqser.red.service.ocr.v1.server.settings.OcrServiceSettings;
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import com.iqser.red.service.redaction.v1.model.Point;
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import com.iqser.red.service.redaction.v1.model.Rectangle;
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import com.pdftron.common.PDFNetException;
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import com.pdftron.pdf.OCRModule;
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import com.pdftron.pdf.OCROptions;
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import com.pdftron.pdf.Optimizer;
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@ -48,118 +40,96 @@ public class OCRService {
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private final InvisibleElementRemovalService invisibleElementRemovalService;
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private final ImagePositionRetrievalService imagePositionRetrievalService;
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/**
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* First loads the PDF Document from storage.
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* Then removes all invisible Elements from the PDF, check InvisibleElementRemovalService for details.
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* Then gets Image Position Information, check ImagePositionRetrievalService for details.
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* Then runs OCR page by page, exclusively on pages which have images on them. It does so, by creating a new PDFDoc and inserting a single page at a time.
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* This is because PDFTron OCROptions overlays all regions where OCR should not be run with white images. It does not check for empty pages.
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* For Documents with many pages but few Images this results in major performance improvements.
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* It then re-adds the OCRed Pages to the original document and saves it.
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*
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* @param dossierId The dossier id
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* @param fileId The file id
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* @return the resulting PDF file as an InputStream
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*/
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@SneakyThrows
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public InputStream ocrDocument(String dossierId, String fileId) {
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public InputStream runOcrOnDocument(String dossierId, String fileId) {
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InputStream fileStream = fileStorageService.getOriginalFileAsStream(dossierId, fileId);
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ImageServiceResponse imageServiceResponse = fileStorageService.getImageServiceResponse(dossierId, fileId);
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byte[] fileWithoutInvisibleTextStream = invisibleElementRemovalService.removeInvisibleElements(fileStream, false);
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byte[] fileWithoutInvisibleTextBytes = invisibleElementRemovalService.removeInvisibleElements(fileStream, false);
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byte[] ocrBytes = ocr(fileWithoutInvisibleTextStream, fileId, imageServiceResponse);
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byte[] ocrBytes = runOcr(fileWithoutInvisibleTextBytes, fileId);
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return new ByteArrayInputStream(ocrBytes);
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}
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private byte[] ocr(byte[] file, String fileId, ImageServiceResponse imageServiceResponse) {
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PDFDoc pdfDoc = null;
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try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
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pdfDoc = new PDFDoc(file);
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Map<Integer, List<ImagePosition>> pages = new HashMap<>();
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imageServiceResponse.getData()
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.forEach(imageMetadata -> pages.computeIfAbsent(imageMetadata.getPosition().getPageNumber(), x -> new ArrayList<>())
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.add(new ImagePosition(new Rectangle(new Point(imageMetadata.getPosition().getX1(), imageMetadata.getPosition().getY1()),
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imageMetadata.getGeometry().getWidth(),
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imageMetadata.getGeometry().getHeight(),
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imageMetadata.getPosition().getPageNumber()), imageMetadata.isAlpha())));
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Map<Integer, PDFDoc> pdfDocMap = Collections.synchronizedMap(new HashMap<>());
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rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
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objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder().fileId(fileId).numberOfPagesToOCR(pages.keySet().size()).build()));
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ocrPages(pdfDoc, fileId, pages, pdfDocMap);
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Optimizer.optimize(pdfDoc);
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pdfDoc.save(out, SDFDoc.SaveMode.LINEARIZED, null);
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pdfDoc.close();
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rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
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objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
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.fileId(fileId)
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.numberOfPagesToOCR(pages.keySet().size())
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.numberOfOCRedPages(pages.keySet().size())
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.ocrFinished(true)
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.build()));
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return out.toByteArray();
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} catch (Exception e) {
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throw new RuntimeException(e);
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} finally {
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if (pdfDoc != null) {
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try {
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pdfDoc.close();
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} catch (Exception e) {
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log.debug("Failed to close document", e);
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}
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}
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}
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}
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@SneakyThrows
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private void ocrPages(PDFDoc pdfDoc, String fileId, Map<Integer, List<ImagePosition>> pages, Map<Integer, PDFDoc> pdfDocMap) {
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private byte[] runOcr(byte[] file, String fileId) {
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int numberOfOCRedPages = 0;
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for (var pageEntry : pages.entrySet()) {
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PDFDoc pdfDoc = new PDFDoc(file);
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Map<Integer, RectCollection> pageIdToRectCollection = imagePositionRetrievalService.getImagePositionPerPage(pdfDoc, true);
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OCROptions options = new OCROptions();
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PDFDoc ocrPageDoc = new PDFDoc();
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int numProcessedPages = 0;
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for (Integer pageId : pageIdToRectCollection.keySet()) {
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try {
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RectCollection rectCollection = new RectCollection();
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var page = pageEntry.getKey();
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Page pdfPage = pdfDoc.getPageIterator(page).next();
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pdfPage.setMediaBox(pdfPage.getCropBox());
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for (ImagePosition imagePosition : pageEntry.getValue()) {
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Rectangle rectangle = imagePosition.getRectangle();
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// Warning coordinate system is different in this call macOs/Linux
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double y = -rectangle.getTopLeft().getY() + pdfPage.getCropBox().getY2() - rectangle.getHeight();
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rectCollection.addRect(rectangle.getTopLeft().getX(), y, rectangle.getTopLeft().getX() + rectangle.getWidth(), y + rectangle.getHeight());
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}
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PDFDoc ocrDoc = new PDFDoc();
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ocrDoc.pagePushBack(pdfPage);
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pdfDocMap.put(pageEntry.getKey(), ocrDoc);
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OCROptions options = new OCROptions();
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options.addTextZonesForPage(rectCollection, 1);
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// optimization by only scanning pages that contain images
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Page pdfPage = pdfDoc.getPage(pageId);
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pdfPage.setMediaBox(pdfPage.getCropBox()); // this line ensures the ocr text is placed correctly by PDFTron
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ocrPageDoc.pagePushBack(pdfPage);
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options.addTextZonesForPage(pageIdToRectCollection.get(pageId), 1);
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options.addLang(ENGLISH);
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options.addDPI(settings.getOcrDPI());
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OCRModule.processPDF(ocrDoc, options);
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rectCollection.clear();
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OCRModule.processPDF(ocrPageDoc, options);
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++numProcessedPages;
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} catch (Exception e) {
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log.warn("Failed to process PDF page {}", pageEntry.getKey());
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StringBuilder zonesString = new StringBuilder();
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for (int j = 0; j < pageIdToRectCollection.get(pageId).getNumRects(); ++j) {
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var r = pageIdToRectCollection.get(pageId).getRectAt(j);
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zonesString.append(String.format("[lower left (%.1f|%.1f) upper right (%.1f|%.1f)]", r.getX1(), r.getY1(), r.getX2(), r.getY2()));
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}
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log.info("{}/{} Page {} done, OCR regions {}", numProcessedPages, pageIdToRectCollection.size(), pageId, zonesString);
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// re-adding OCR pages
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Page ocrPage = ocrPageDoc.getPage(1);
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pdfDoc.pageInsert(pdfDoc.getPageIterator(pageId), ocrPage);
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pdfDoc.pageRemove(pdfDoc.getPageIterator(pageId + 1));
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ocrPageDoc.pageRemove(ocrPageDoc.getPageIterator(1));
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rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
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objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
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.fileId(fileId)
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.numberOfPagesToOCR(pageIdToRectCollection.size())
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.numberOfOCRedPages(numProcessedPages)
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.build()));
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} catch (PDFNetException e) {
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log.error("failed to process page {}", pageId);
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throw new RuntimeException(e);
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}
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rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
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objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
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.fileId(fileId)
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.numberOfPagesToOCR(pages.keySet().size())
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.numberOfOCRedPages(++numberOfOCRedPages)
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.build()));
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log.warn("Done page {}", pageEntry);
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}
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ocrPageDoc.close();
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rabbitTemplate.convertAndSend(MessagingConfiguration.OCR_STATUS_UPDATE_RESPONSE_QUEUE,
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objectMapper.writeValueAsString(OCRStatusUpdateResponse.builder()
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.fileId(fileId)
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.numberOfPagesToOCR(pageIdToRectCollection.size())
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.numberOfOCRedPages(numProcessedPages)
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.ocrFinished(true)
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.build()));
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Optimizer.optimize(pdfDoc);
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return pdfDoc.save(SDFDoc.SaveMode.LINEARIZED, null);
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}
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}
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|
||||
@ -44,7 +44,7 @@ public class OcrMessageReceiver {
|
||||
fileStorageService.storeUntouchedFile(ocrRequestMessage.getDossierId(), ocrRequestMessage.getFileId(), originalFile);
|
||||
}
|
||||
|
||||
var ocrResult = ocrService.ocrDocument(ocrRequestMessage.getDossierId(), ocrRequestMessage.getFileId());
|
||||
var ocrResult = ocrService.runOcrOnDocument(ocrRequestMessage.getDossierId(), ocrRequestMessage.getFileId());
|
||||
|
||||
fileStorageService.storeOriginalFile(ocrRequestMessage.getDossierId(), ocrRequestMessage.getFileId(), ocrResult);
|
||||
|
||||
|
||||
@ -3,11 +3,13 @@ package com.iqser.red.service.ocr.v1.server;
|
||||
import static com.iqser.red.service.ocr.v1.server.utils.OsUtils.getTemporaryDirectory;
|
||||
import static org.assertj.core.api.Assertions.assertThat;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.InputStream;
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
|
||||
import org.apache.commons.io.FileUtils;
|
||||
import org.apache.commons.io.IOUtils;
|
||||
import org.junit.jupiter.api.AfterEach;
|
||||
import org.junit.jupiter.api.BeforeEach;
|
||||
import org.junit.jupiter.api.Disabled;
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.junit.jupiter.api.extension.ExtendWith;
|
||||
@ -25,12 +27,17 @@ import org.springframework.core.io.ClassPathResource;
|
||||
import org.springframework.test.context.junit.jupiter.SpringExtension;
|
||||
|
||||
import com.fasterxml.jackson.databind.ObjectMapper;
|
||||
import com.iqser.red.service.ocr.v1.server.utils.FileSystemBackedStorageService;
|
||||
import com.iqser.red.service.ocr.v1.server.service.OCRService;
|
||||
import com.iqser.red.service.ocr.v1.server.service.FileStorageService;
|
||||
import com.iqser.red.service.ocr.v1.server.service.OCRService;
|
||||
import com.iqser.red.service.ocr.v1.server.utils.FileSystemBackedStorageService;
|
||||
import com.iqser.red.service.persistence.service.v1.api.model.dossiertemplate.dossier.file.FileType;
|
||||
import com.iqser.red.storage.commons.StorageAutoConfiguration;
|
||||
import com.iqser.red.storage.commons.service.StorageService;
|
||||
import com.pdftron.pdf.OCRModule;
|
||||
import com.pdftron.pdf.PDFDoc;
|
||||
import com.pdftron.pdf.Page;
|
||||
import com.pdftron.pdf.PageIterator;
|
||||
import com.pdftron.pdf.TextExtractor;
|
||||
|
||||
import lombok.SneakyThrows;
|
||||
|
||||
@ -56,28 +63,96 @@ public class OcrServiceIntegrationTest {
|
||||
private OCRService ocrService;
|
||||
|
||||
|
||||
@BeforeEach
|
||||
@SneakyThrows
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void assertOCRModuleIsLoaded() {
|
||||
|
||||
assert OCRModule.isModuleAvailable();
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void testOcr() {
|
||||
// check visually for most of the images containing text, the resulting text is kind of nonsense, just ensure it is there
|
||||
String text = testOCR("StitchedImagesMultiPage");
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void testManyRotatedImages() {
|
||||
// check visually for most of the images containing text, the resulting text is kind of nonsense, just ensure it is there
|
||||
String text = testOCR("manyRotatedImages");
|
||||
assertThat(text).contains("Michela", "Gregori", "DVM", "PhD", "Pathologist");
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void testMergeImages() {
|
||||
// check visually for most of the images containing text, the resulting text is kind of nonsense, just ensure it is there
|
||||
String text = testOCR("merge_images");
|
||||
assertThat(text).contains("Bodyweight change of dams with live young - group mean values",
|
||||
"Control",
|
||||
"mg/g day",
|
||||
"10 mg/kg/day",
|
||||
"20 mg/kg/",
|
||||
"Days",
|
||||
"50",
|
||||
"-200",
|
||||
"—250",
|
||||
"150",
|
||||
"200",
|
||||
"250",
|
||||
"—150");
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void testOCRWatermark() {
|
||||
|
||||
assertThat(testOCR("Watermark")).contains("syngenta");
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@Disabled // OCRModule is not available on build server. If you want to run the test set the property at the top.
|
||||
public void testOCRInvisibleText() {
|
||||
|
||||
String text = testOCR("InvisibleText");
|
||||
assertThat(text).contains("Michela", "Gregori", "DVM", "PhD", "Pathologist", "SIGNATURE PAGE");
|
||||
assertThat(text).doesNotContain("COMPLETION DATE:", "LABORATORY PROJECT ID:", "AUTHOR(S):", "Substance");
|
||||
}
|
||||
|
||||
|
||||
@SneakyThrows
|
||||
public void testOCR() {
|
||||
private String testOCR(String fileName) {
|
||||
|
||||
String fileName = "Watermark";
|
||||
|
||||
ClassPathResource imageInfoResource = new ClassPathResource("files/" + fileName + ".IMAGE_INFO.json");
|
||||
ClassPathResource pdfFileResource = new ClassPathResource("files/" + fileName + ".pdf");
|
||||
|
||||
var originId = FileStorageService.getStorageId("dossier", "file", FileType.ORIGIN);
|
||||
storageService.storeObject(originId, pdfFileResource.getInputStream());
|
||||
|
||||
var imageId = FileStorageService.getStorageId("dossier", "file", FileType.IMAGE_INFO);
|
||||
storageService.storeObject(imageId, imageInfoResource.getInputStream());
|
||||
|
||||
var response = ocrService.ocrDocument("dossier", "file");
|
||||
|
||||
var out = FileUtils.openOutputStream(new File(getTemporaryDirectory() + "/" + fileName + ".pdf"));
|
||||
IOUtils.copy(response, out);
|
||||
|
||||
System.out.println("File:" + getTemporaryDirectory() + "/" + fileName + ".pdf");
|
||||
try (InputStream ocrDocument = ocrService.runOcrOnDocument("dossier", "file")) {
|
||||
byte[] ocrDocumentBytes = ocrDocument.readAllBytes();
|
||||
try (var out = new FileOutputStream(getTemporaryDirectory() + "/" + fileName + ".pdf")) {
|
||||
out.write(ocrDocumentBytes);
|
||||
}
|
||||
TextExtractor extractor = new TextExtractor();
|
||||
List<String> texts = new ArrayList<>();
|
||||
PDFDoc pdfDoc = new PDFDoc(ocrDocumentBytes);
|
||||
PageIterator iterator = pdfDoc.getPageIterator();
|
||||
while (iterator.hasNext()) {
|
||||
Page page = iterator.next();
|
||||
extractor.begin(page);
|
||||
texts.add(extractor.getAsText());
|
||||
}
|
||||
System.out.println("File:" + getTemporaryDirectory() + "/" + fileName + ".pdf");
|
||||
return String.join("\n", texts);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
|
||||
@ -0,0 +1,228 @@
|
||||
package com.iqser.red.service.ocr.v1.server.service;
|
||||
|
||||
import static com.iqser.red.service.ocr.v1.server.utils.OsUtils.getTemporaryDirectory;
|
||||
import static org.assertj.core.api.Assertions.assertThat;
|
||||
|
||||
import java.io.FileInputStream;
|
||||
import java.io.FileOutputStream;
|
||||
import java.io.IOException;
|
||||
import java.io.InputStream;
|
||||
import java.util.ArrayList;
|
||||
import java.util.List;
|
||||
import java.util.Map;
|
||||
import java.util.stream.Collectors;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
import org.junit.jupiter.api.extension.ExtendWith;
|
||||
import org.springframework.amqp.rabbit.core.RabbitTemplate;
|
||||
import org.springframework.beans.factory.annotation.Autowired;
|
||||
import org.springframework.boot.test.context.SpringBootTest;
|
||||
import org.springframework.boot.test.mock.mockito.MockBean;
|
||||
import org.springframework.context.annotation.Import;
|
||||
import org.springframework.core.io.ClassPathResource;
|
||||
import org.springframework.test.context.junit.jupiter.SpringExtension;
|
||||
|
||||
import com.iqser.red.service.ocr.v1.server.Application;
|
||||
import com.iqser.red.service.ocr.v1.server.OcrServiceIntegrationTest;
|
||||
import com.pdftron.common.PDFNetException;
|
||||
import com.pdftron.pdf.ColorPt;
|
||||
import com.pdftron.pdf.ColorSpace;
|
||||
import com.pdftron.pdf.Element;
|
||||
import com.pdftron.pdf.ElementBuilder;
|
||||
import com.pdftron.pdf.ElementWriter;
|
||||
import com.pdftron.pdf.PDFDoc;
|
||||
import com.pdftron.pdf.Page;
|
||||
import com.pdftron.pdf.Rect;
|
||||
import com.pdftron.pdf.RectCollection;
|
||||
import com.pdftron.sdf.SDFDoc;
|
||||
|
||||
import lombok.SneakyThrows;
|
||||
|
||||
@ExtendWith(SpringExtension.class)
|
||||
@SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
|
||||
@Import(OcrServiceIntegrationTest.TestConfiguration.class)
|
||||
class ImagePositionRetrievalServiceTest {
|
||||
|
||||
@Autowired
|
||||
private ImagePositionRetrievalService imagePositionRetrievalService;
|
||||
|
||||
@MockBean
|
||||
protected RabbitTemplate rabbitTemplate;
|
||||
|
||||
|
||||
@Test
|
||||
@SneakyThrows
|
||||
public void testImagePositionRetrievalForRotateTestFileWithImages() {
|
||||
|
||||
String fileName = "RotateTestFileWithImages";
|
||||
|
||||
List<int[]> allRectCoords = testImagePositionDetection(fileName);
|
||||
|
||||
assertThat(allRectCoords).contains(new int[]{48, 572, 295, 721},
|
||||
new int[]{54, 279, 301, 428},
|
||||
new int[]{360, 173, 509, 419},
|
||||
new int[]{362, 522, 511, 768},
|
||||
new int[]{459, 354, 608, 600},
|
||||
new int[]{145, 404, 392, 553},
|
||||
new int[]{151, 111, 398, 260},
|
||||
new int[]{457, 5, 606, 251},
|
||||
new int[]{395, 480, 545, 726},
|
||||
new int[]{393, 130, 542, 377},
|
||||
new int[]{88, 236, 334, 386},
|
||||
new int[]{82, 530, 328, 679},
|
||||
new int[]{465, 11, 614, 257},
|
||||
new int[]{159, 117, 406, 266},
|
||||
new int[]{467, 360, 617, 607},
|
||||
new int[]{153, 410, 400, 559});
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@SneakyThrows
|
||||
public void testImagePositionRetrievalForRotateTestFileWithImagesExtremeCropbox() {
|
||||
|
||||
String fileName = "RotateTestFileWithImagesExtremeCropbox";
|
||||
|
||||
List<int[]> allRectCoords = testImagePositionDetection(fileName);
|
||||
assertThat(allRectCoords).contains(new int[]{48, 572, 295, 721},
|
||||
new int[]{362, 522, 511, 768},
|
||||
new int[]{360, 173, 509, 419},
|
||||
new int[]{54, 279, 301, 428},
|
||||
new int[]{145, 192, 392, 341},
|
||||
new int[]{459, 142, 608, 388},
|
||||
new int[]{457, -207, 606, 39},
|
||||
new int[]{151, -101, 398, 48},
|
||||
new int[]{-30, 238, 216, 387},
|
||||
new int[]{283, 188, 433, 434},
|
||||
new int[]{281, -162, 430, 85},
|
||||
new int[]{-24, -56, 222, 94},
|
||||
new int[]{-39, 410, 208, 559},
|
||||
new int[]{275, 360, 425, 607},
|
||||
new int[]{273, 11, 422, 257},
|
||||
new int[]{-33, 117, 214, 266});
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@SneakyThrows
|
||||
public void testMergeImages() {
|
||||
|
||||
String fileName = "merge_images";
|
||||
List<int[]> allRectCoords = testImagePositionDetection(fileName);
|
||||
assertThat(allRectCoords).contains(new int[]{90, 284, 398, 770});
|
||||
}
|
||||
|
||||
|
||||
@Test
|
||||
@SneakyThrows
|
||||
public void testStitchedImagesMultiPage() {
|
||||
|
||||
String fileName = "StitchedImagesMultiPage";
|
||||
List<int[]> allRectCoords = testImagePositionDetection(fileName);
|
||||
assertThat(allRectCoords.size()).isEqualTo(48);
|
||||
}
|
||||
|
||||
|
||||
private List<int[]> testImagePositionDetection(String fileName) throws IOException, PDFNetException {
|
||||
|
||||
InputStream fileStream = new FileInputStream(new ClassPathResource("files/" + fileName + ".pdf").getFile().getAbsolutePath());
|
||||
PDFDoc pdfDoc = new PDFDoc(fileStream);
|
||||
|
||||
Map<Integer, RectCollection> pageIdToRectCollection = imagePositionRetrievalService.getImagePositionPerPage(pdfDoc, false);
|
||||
|
||||
ElementWriter writer = new ElementWriter();
|
||||
pageIdToRectCollection.forEach((pageId, rectCollection) -> {
|
||||
try {
|
||||
writer.begin(pdfDoc.getPage(pageId));
|
||||
drawRectCollection(writer, rectCollection, pdfDoc.getPage(pageId));
|
||||
drawGrid(writer, pdfDoc.getPage(pageId));
|
||||
writer.end();
|
||||
StringBuilder zonesString = new StringBuilder();
|
||||
for (int j = 0; j < rectCollection.getNumRects(); ++j) {
|
||||
var r = rectCollection.getRectAt(j);
|
||||
zonesString.append(String.format("%d:[lower left (%.1f|%.1f) upper right (%.1f|%.1f)]; ", j, r.getX1(), r.getY1(), r.getX2(), r.getY2()));
|
||||
}
|
||||
System.out.printf("Page %d: rotation: %d OCR regions %s \n", pageId, pdfDoc.getPage(pageId).getRotation(), zonesString);
|
||||
} catch (PDFNetException e) {
|
||||
throw new RuntimeException(e);
|
||||
}
|
||||
});
|
||||
|
||||
// Check visually for red Rectangles to match images in the saved pdf file
|
||||
try (var out = new FileOutputStream(getTemporaryDirectory() + "/" + fileName + "_IMAGE_BBOX.pdf")) {
|
||||
out.write(pdfDoc.save(SDFDoc.SaveMode.LINEARIZED, null));
|
||||
}
|
||||
System.out.println("result file: " + getTemporaryDirectory() + "/" + fileName + "_IMAGE_BBOX.pdf");
|
||||
fileStream.close();
|
||||
// round all coords to nearest int to account for inconsistencies with the calculation of the bounding box
|
||||
return pageIdToRectCollection.values().stream().map(this::toRoundedCoordinateArrayList).flatMap(List::stream).collect(Collectors.toList());
|
||||
}
|
||||
|
||||
|
||||
@SneakyThrows
|
||||
private List<int[]> toRoundedCoordinateArrayList(RectCollection rectCollection) {
|
||||
|
||||
List<int[]> coords = new ArrayList<>(rectCollection.getNumRects());
|
||||
for (int i = 0; i < rectCollection.getNumRects(); ++i) {
|
||||
var r = rectCollection.getRectAt(i);
|
||||
coords.add(new int[]{(int) Math.round(r.getX1()), (int) Math.round(r.getY1()), (int) Math.round(r.getX2()), (int) Math.round(r.getY2())});
|
||||
}
|
||||
return coords;
|
||||
}
|
||||
|
||||
|
||||
@SneakyThrows
|
||||
private void drawGrid(ElementWriter writer, Page page) {
|
||||
|
||||
ElementBuilder eb = new ElementBuilder();
|
||||
double dX = 15;
|
||||
double dY = 15;
|
||||
int nRows = (int) (page.getPageHeight() / dY) + 1;
|
||||
int nCols = (int) (page.getPageWidth() / dX) + 1;
|
||||
for (int row = 0; row < nRows; ++row) {
|
||||
for (int col = 0; col < nCols; ++col) {
|
||||
Element cell = eb.createRect(col * dX, row * dY, dX, dY);
|
||||
cell.setPathStroke(true);
|
||||
cell.getGState().setLineWidth(1);
|
||||
cell.getGState().setStrokeOpacity(0.1);
|
||||
cell.getGState().setStrokeColorSpace(ColorSpace.createDeviceRGB());
|
||||
if (row == 0 && col == 0) {
|
||||
cell.getGState().setStrokeColor(new ColorPt(0, 0, 1));
|
||||
cell.setPathFill(true);
|
||||
cell.getGState().setFillOpacity(0.8);
|
||||
cell.getGState().setFillColorSpace(ColorSpace.createDeviceRGB());
|
||||
cell.getGState().setFillColor(new ColorPt(0, 0, 1));
|
||||
} else {
|
||||
cell.setPathFill(false);
|
||||
cell.getGState().setStrokeColor(new ColorPt(0.1, 0.1, 0.1));
|
||||
}
|
||||
writer.writePlacedElement(cell);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@SneakyThrows
|
||||
public static void drawRectCollection(ElementWriter writer, RectCollection rectCollection, Page page) {
|
||||
|
||||
ColorPt colorPt = new ColorPt(1, 0, 0);
|
||||
ElementBuilder eb = new ElementBuilder();
|
||||
for (int i = 0; i < rectCollection.getNumRects(); ++i) {
|
||||
Rect r = rectCollection.getRectAt(i);
|
||||
Element rect = eb.createRect(r.getX1(), r.getY1(), r.getWidth(), r.getHeight());
|
||||
|
||||
rect.setPathStroke(true);
|
||||
rect.getGState().setLineWidth(5);
|
||||
rect.getGState().setStrokeColorSpace(ColorSpace.createDeviceRGB());
|
||||
rect.getGState().setStrokeColor(colorPt);
|
||||
|
||||
rect.setPathFill(true);
|
||||
rect.getGState().setFillColorSpace(ColorSpace.createDeviceRGB());
|
||||
rect.getGState().setFillColor(colorPt);
|
||||
rect.getGState().setFillOpacity(0.5);
|
||||
|
||||
writer.writePlacedElement(rect);
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
@ -1,4 +1,4 @@
|
||||
package com.iqser.red.service.ocr.v1.server;
|
||||
package com.iqser.red.service.ocr.v1.server.service;
|
||||
|
||||
import static com.iqser.red.service.ocr.v1.server.utils.OsUtils.getTemporaryDirectory;
|
||||
import static org.assertj.core.api.AssertionsForClassTypes.assertThat;
|
||||
@ -17,7 +17,8 @@ import org.springframework.context.annotation.Import;
|
||||
import org.springframework.core.io.ClassPathResource;
|
||||
import org.springframework.test.context.junit.jupiter.SpringExtension;
|
||||
|
||||
import com.iqser.red.service.ocr.v1.server.service.InvisibleElementRemovalService;
|
||||
import com.iqser.red.service.ocr.v1.server.Application;
|
||||
import com.iqser.red.service.ocr.v1.server.OcrServiceIntegrationTest;
|
||||
import com.pdftron.pdf.PDFDoc;
|
||||
import com.pdftron.pdf.Page;
|
||||
import com.pdftron.pdf.PageIterator;
|
||||
@ -26,8 +27,7 @@ import com.pdftron.pdf.TextExtractor;
|
||||
import lombok.SneakyThrows;
|
||||
|
||||
@ExtendWith(SpringExtension.class)
|
||||
@SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT //
|
||||
, properties = {"pdftron.ocrmodule.path=/YourOCRModulePath"})
|
||||
@SpringBootTest(classes = Application.class, webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
|
||||
@Import(OcrServiceIntegrationTest.TestConfiguration.class)
|
||||
public class InvisibleElementRemovalServiceTest {
|
||||
|
||||
@ -1 +0,0 @@
|
||||
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|
||||
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Reference in New Issue
Block a user