c03913e088
Merge in RR/image-prediction from RED-5107-hotfix to release/3.4.1
Squashed commit of the following:
commit b7b99074054e67201537efc2f0a5b96f29bd1684
Author: Julius Unverfehrt <julius.unverfehrt@iqser.com>
Date: Mon Aug 29 12:57:50 2022 +0200
RED-5107: move image normalization for predictor to image extraction step to be able to properly catch exeption thrown from this step
39 lines
989 B
Python
39 lines
989 B
Python
import abc
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import numpy as np
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import tensorflow as tf
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class ModelWrapper(abc.ABC):
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def __init__(self, classes, base_weights_path=None, weights_path=None):
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self.__classes = classes
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self.model = self.__build(base_weights_path)
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self.model.load_weights(weights_path)
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@property
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@abc.abstractmethod
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def input_shape(self):
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raise NotImplementedError
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@property
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def classes(self):
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return self.__classes
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@abc.abstractmethod
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def __preprocess_tensor(self, tensor):
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raise NotImplementedError
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@staticmethod
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def __images_to_tensor(images):
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return np.array(list(map(tf.keras.preprocessing.image.img_to_array, images)))
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def prep_images(self, images):
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tensor = self.__images_to_tensor(images)
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tensor = self.__preprocess_tensor(tensor)
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return tensor
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@abc.abstractmethod
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def __build(self, base_weights=None) -> tf.keras.models.Model:
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raise NotImplementedError
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