104 lines
3.1 KiB
Python
104 lines
3.1 KiB
Python
from functools import partial
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from itertools import starmap, chain
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from typing import Iterable, List
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import fpdf
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import pytest
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from funcy import merge, second, compose, rpartial
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from image_prediction.image_extractor.extractor import ImageMetadataPair
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from image_prediction.info import Info
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from test.conftest import get_base_position_metadata, add_image, random_single_color_image_from_metadata
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from test.utils.stitching import BoxSplitter
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from itertools import groupby
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def make_getter(key):
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def getter(pair):
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return pair.metadata[key]
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return getter
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def make_coord_getter(c):
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return {
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"x1": make_getter(Info.X1),
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"x2": make_getter(Info.X2),
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"y1": make_getter(Info.Y1),
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"y2": make_getter(Info.Y2),
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}[c]
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def merge_group(group, axis="y"):
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y1_getter, y2_getter = map(make_coord_getter, ("y1", "y2"))
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group = list(group)
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current_pair = group.pop(0)
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for pair in group:
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if y2_getter(current_pair) == y1_getter(pair):
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current_box = merge_pair(current_pair, pair)
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def merge_pair(p1, p2):
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pass
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class Stitcher:
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@staticmethod
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def groupby(pairs, coord):
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coord_getter = make_coord_getter(coord)
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pairs = sorted(pairs, key=coord_getter)
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return map(compose(list, second), groupby(pairs, coord_getter))
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def stitch(self, pairs: Iterable[ImageMetadataPair]) -> ImageMetadataPair:
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groups = self.groupby(pairs, "x1")
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groups = chain.from_iterable(map(rpartial(self.groupby, "x2"), groups))
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groups = map(partial(sorted, key=make_coord_getter("y1")), groups)
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groups = map(merge_group, groups)
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@pytest.mark.parametrize("width", [160])
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@pytest.mark.parametrize("height", [90])
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@pytest.mark.parametrize("page_width", [int(160 * 1.1)])
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@pytest.mark.parametrize("page_height", [int(90 * 1.1)])
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def test_image_stitcher(patches_metadata, base_patch_metadata):
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# noinspection PyTypeChecker
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assert Stitcher().stitch(patch_image_metadata_pairs).metadata == base_patch_metadata
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@pytest.mark.parametrize("width", [160])
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@pytest.mark.parametrize("height", [90])
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@pytest.mark.parametrize("page_width", [int(160 * 1.1)])
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@pytest.mark.parametrize("page_height", [int(90 * 1.1)])
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def test_partial_image_metadata_pairs(patch_image_metadata_pairs, page_width, page_height):
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pdf = fpdf.FPDF(unit="pt", format=(page_width, page_height))
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for pair in patch_image_metadata_pairs:
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add_image(pdf, pair)
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pdf.output("/tmp/bla.pdf")
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@pytest.fixture
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def patch_image_metadata_pairs(patches_metadata) -> List[ImageMetadataPair]:
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images = map(random_single_color_image_from_metadata, patches_metadata)
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return list(starmap(ImageMetadataPair, zip(images, patches_metadata)))
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@pytest.fixture
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def base_patch_metadata(width, height, page_width, page_height):
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metadata = get_base_position_metadata(width, height, page_width, page_height)
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metadata = merge(metadata, {Info.X1: 0, Info.Y1: 0, Info.X2: width, Info.Y2: height})
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return metadata
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@pytest.fixture
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def patches_metadata(base_patch_metadata):
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patches_metadata = list(BoxSplitter().split_box(base_patch_metadata))
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return patches_metadata
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