def __init__(self):

        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        self.convert_to_3_channels = ConvertTo3Channels()
        self.random_brightness = RandomBrightness(lower=-32,
                                                  upper=32,
                                                  prob=0.5)
        self.random_contrast = RandomContrast(lower=0.5, upper=1.5, prob=0.5)
        self.random_saturation = RandomSaturation(lower=0.5,
                                                  upper=1.5,
                                                  prob=0.5)
        self.random_hue = RandomHue(max_delta=18, prob=0.5)
        self.random_channel_swap = RandomChannelSwap(prob=0.0)

        self.sequence1 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.random_channel_swap
        ]

        self.sequence2 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.convert_to_uint8,
            self.convert_RGB_to_HSV, self.convert_to_float32,
            self.random_saturation, self.random_hue, self.convert_to_uint8,
            self.convert_HSV_to_RGB, self.convert_to_float32,
            self.random_contrast, self.convert_to_uint8,
            self.random_channel_swap
        ]
コード例 #2
0
    def __init__(self,
                 random_brightness=(-48, 48, 0.5),
                 random_contrast=(0.5, 1.8, 0.5),
                 random_saturation=(0.5, 1.8, 0.5),
                 random_hue=(18, 0.5),
                 random_flip=0.5,
                 random_translate=((0.03, 0.5), (0.03, 0.5), 0.5),
                 random_scale=(0.5, 2.0, 0.5),
                 n_trials_max=3,
                 clip_boxes=True,
                 overlap_criterion='area',
                 bounds_box_filter=(0.3, 1.0),
                 bounds_validator=(0.5, 1.0),
                 n_boxes_min=1,
                 background=(0, 0, 0),
                 labels_format={
                     'class_id': 0,
                     'xmin': 1,
                     'ymin': 2,
                     'xmax': 3,
                     'ymax': 4
                 }):

        if (random_scale[0] >= 1) or (random_scale[1] <= 1):
            raise ValueError(
                "This sequence of transformations only makes sense if the minimum scaling factor is <1 and the maximum scaling factor is >1."
            )

        self.n_trials_max = n_trials_max
        self.clip_boxes = clip_boxes
        self.overlap_criterion = overlap_criterion
        self.bounds_box_filter = bounds_box_filter
        self.bounds_validator = bounds_validator
        self.n_boxes_min = n_boxes_min
        self.background = background
        self.labels_format = labels_format

        # 图像变换之后保留哪些boxes
        self.box_filter = BoxFilter(check_overlap=True,
                                    check_min_area=True,
                                    check_degenerate=True,
                                    overlap_criterion=self.overlap_criterion,
                                    overlap_bounds=self.bounds_box_filter,
                                    min_area=16,
                                    labels_format=self.labels_format)

        # 训练图像是否有效
        self.image_validator = ImageValidator(
            overlap_criterion=self.overlap_criterion,
            bounds=self.bounds_validator,
            n_boxes_min=self.n_boxes_min,
            labels_format=self.labels_format)

        # Utility distortions
        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        self.convert_to_3_channels = ConvertTo3Channels()  # 确保所有图像3通道

        # Photometric transformations
        self.random_brightness = RandomBrightness(lower=random_brightness[0],
                                                  upper=random_brightness[1],
                                                  prob=random_brightness[2])
        self.random_contrast = RandomContrast(lower=random_contrast[0],
                                              upper=random_contrast[1],
                                              prob=random_contrast[2])
        self.random_saturation = RandomSaturation(lower=random_saturation[0],
                                                  upper=random_saturation[1],
                                                  prob=random_saturation[2])
        self.random_hue = RandomHue(max_delta=random_hue[0],
                                    prob=random_hue[1])

        # Geometric transformations
        self.random_flip = RandomFlip(dim='horizontal',
                                      prob=random_flip,
                                      labels_format=self.labels_format)
        self.random_translate = RandomTranslate(
            dy_minmax=random_translate[0],
            dx_minmax=random_translate[1],
            prob=random_translate[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)
        self.random_zoom_in = RandomScale(min_factor=1.0,
                                          max_factor=random_scale[1],
                                          prob=random_scale[2],
                                          clip_boxes=self.clip_boxes,
                                          box_filter=self.box_filter,
                                          image_validator=self.image_validator,
                                          n_trials_max=self.n_trials_max,
                                          background=self.background,
                                          labels_format=self.labels_format)
        self.random_zoom_out = RandomScale(
            min_factor=random_scale[0],
            max_factor=1.0,
            prob=random_scale[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)

        # 放大
        self.sequence1 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.random_translate, self.random_zoom_in, self.random_flip
        ]

        # 缩小
        self.sequence2 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.convert_to_uint8,
            self.convert_RGB_to_HSV, self.convert_to_float32,
            self.random_saturation, self.random_hue, self.convert_to_uint8,
            self.convert_HSV_to_RGB, self.convert_to_float32,
            self.random_contrast, self.convert_to_uint8, self.random_zoom_out,
            self.random_translate, self.random_flip
        ]
    def __init__(self,
                 resize_height,
                 resize_width,
                 random_brightness=(-48, 48, 0.5),
                 random_contrast=(0.5, 1.8, 0.5),
                 random_saturation=(0.5, 1.8, 0.5),
                 random_hue=(18, 0.5),
                 random_flip=0.5,
                 min_scale=0.3,
                 max_scale=2.0,
                 min_aspect_ratio=0.5,
                 max_aspect_ratio=2.0,
                 n_trials_max=3,
                 clip_boxes=True,
                 overlap_criterion='area',
                 bounds_box_filter=(0.3, 1.0),
                 bounds_validator=(0.5, 1.0),
                 n_boxes_min=1,
                 background=(0, 0, 0),
                 labels_format={'class_id': 0, 'xmin': 1, 'ymin': 2, 'xmax': 3, 'ymax': 4}):

        self.n_trials_max = n_trials_max
        self.clip_boxes = clip_boxes
        self.overlap_criterion = overlap_criterion
        self.bounds_box_filter = bounds_box_filter
        self.bounds_validator = bounds_validator
        self.n_boxes_min = n_boxes_min
        self.background = background
        self.labels_format = labels_format

        # Determines which boxes are kept in an image after the transformations have been applied.
        self.box_filter_patch = BoxFilter(check_overlap=True,
                                          check_min_area=False,
                                          check_degenerate=False,
                                          overlap_criterion=self.overlap_criterion,
                                          overlap_bounds=self.bounds_box_filter,
                                          labels_format=self.labels_format)

        self.box_filter_resize = BoxFilter(check_overlap=False,
                                           check_min_area=True,
                                           check_degenerate=True,
                                           min_area=16,
                                           labels_format=self.labels_format)

        # Determines whether the result of the transformations is a valid training image.
        self.image_validator = ImageValidator(overlap_criterion=self.overlap_criterion,
                                              bounds=self.bounds_validator,
                                              n_boxes_min=self.n_boxes_min,
                                              labels_format=self.labels_format)

        # Utility transformations
        self.convert_to_3_channels = ConvertTo3Channels()  # Make sure all images end up having 3 channels.
        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        self.resize = Resize(height=resize_height,
                             width=resize_width,
                             box_filter=self.box_filter_resize,
                             labels_format=self.labels_format)

        # Photometric transformations
        self.random_brightness = RandomBrightness(lower=random_brightness[0], upper=random_brightness[1],
                                                  prob=random_brightness[2])
        self.random_contrast = RandomContrast(lower=random_contrast[0], upper=random_contrast[1],
                                              prob=random_contrast[2])
        self.random_saturation = RandomSaturation(lower=random_saturation[0], upper=random_saturation[1],
                                                  prob=random_saturation[2])
        self.random_hue = RandomHue(max_delta=random_hue[0], prob=random_hue[1])

        # Geometric transformations
        self.random_flip = RandomFlip(dim='horizontal', prob=random_flip, labels_format=self.labels_format)
        self.patch_coord_generator = PatchCoordinateGenerator(must_match='w_ar',
                                                              min_scale=min_scale,
                                                              max_scale=max_scale,
                                                              scale_uniformly=False,
                                                              min_aspect_ratio=min_aspect_ratio,
                                                              max_aspect_ratio=max_aspect_ratio)
        self.random_patch = RandomPatch(patch_coord_generator=self.patch_coord_generator,
                                        box_filter=self.box_filter_patch,
                                        image_validator=self.image_validator,
                                        n_trials_max=self.n_trials_max,
                                        clip_boxes=self.clip_boxes,
                                        prob=1.0,
                                        can_fail=False,
                                        labels_format=self.labels_format)

        # Define the processing chain
        self.transformations = [self.convert_to_3_channels,
                                self.convert_to_float32,
                                self.random_brightness,
                                self.random_contrast,
                                self.convert_to_uint8,
                                self.convert_RGB_to_HSV,
                                self.convert_to_float32,
                                self.random_saturation,
                                self.random_hue,
                                self.convert_to_uint8,
                                self.convert_HSV_to_RGB,
                                self.random_patch,
                                self.random_flip,
                                self.resize]
コード例 #4
0
    def __init__(self,
                 resize_height,
                 resize_width,
                 random_brightness=(-20, 20, 0.5),
                 random_contrast=(0.8, 1.0, 0.5),
                 random_saturation=(0.8, 1.8, 0.5),
                 random_hue=(10, 0.5),
                 random_flip=0.5,
                 random_rotate_small=([np.pi / 40, np.pi / 30], 0.5),
                 random_rotate_big=([np.pi / 2, np.pi, 3 * np.pi / 2], 0.5),
                 min_scale=0.8,
                 max_scale=1.05,
                 min_aspect_ratio=0.8,
                 max_aspect_ratio=1.2,
                 n_trials_max=3,
                 overlap_criterion='center_point',
                 bounds_box_filter=(0.3, 1.0),
                 bounds_validator=(0.5, 1.0),
                 n_boxes_min=1,
                 random_translate=((0.03, 0.05), (0.03, 0.05), 0.5),
                 random_scale=(0.9, 1.1, 0.5),
                 proba_no_aug=1 / 3):

        self.n_trials_max = n_trials_max
        self.overlap_criterion = overlap_criterion
        self.bounds_box_filter = bounds_box_filter
        self.bounds_validator = bounds_validator
        self.n_boxes_min = n_boxes_min

        self.proba_no_aug = proba_no_aug  # the probability of not performing any transformations

        # Determines which boxes are kept in an image after the transformations have been applied.
        self.box_filter = BoxFilter(check_overlap=True,
                                    check_min_area=False,
                                    check_degenerate=False,
                                    overlap_criterion=self.overlap_criterion,
                                    overlap_bounds=self.bounds_box_filter)

        self.box_filter_resize = BoxFilter(check_overlap=False,
                                           check_min_area=True,
                                           check_degenerate=True,
                                           min_area=16)

        # Determines whether the result of the transformations is a valid training image.
        self.image_validator = ImageValidator(
            overlap_criterion=self.overlap_criterion,
            bounds=self.bounds_validator,
            n_boxes_min=self.n_boxes_min)

        # Utility transformations
        self.convert_to_3_channels = ConvertTo3Channels(
        )  # Make sure all images end up having 3 channels.
        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        self.resize = Resize(height=resize_height,
                             width=resize_width,
                             box_filter=self.box_filter_resize)

        # Photometric transformations
        self.random_brightness = RandomBrightness(lower=random_brightness[0],
                                                  upper=random_brightness[1],
                                                  prob=random_brightness[2])
        self.random_contrast = RandomContrast(lower=random_contrast[0],
                                              upper=random_contrast[1],
                                              prob=random_contrast[2])
        self.random_saturation = RandomSaturation(lower=random_saturation[0],
                                                  upper=random_saturation[1],
                                                  prob=random_saturation[2])
        self.random_hue = RandomHue(max_delta=random_hue[0],
                                    prob=random_hue[1])

        # Geometric transformations
        self.random_horizontal_flip = RandomFlip(dim='horizontal',
                                                 prob=random_flip)
        self.random_vertical_flip = RandomFlip(dim='vertical',
                                               prob=random_flip)
        self.random_translate = RandomTranslate(
            dy_minmax=random_translate[0],
            dx_minmax=random_translate[1],
            prob=random_translate[2],
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max)

        self.random_rotate_small = RandomRotate(
            angles=random_rotate_small[0],
            prob=random_rotate_small[1],
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max)

        self.random_rotate_big = RandomRotate(
            angles=random_rotate_big[0],
            prob=random_rotate_big[1],
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max)

        self.random_zoom_in = RandomScale(min_factor=1.0,
                                          max_factor=random_scale[1],
                                          prob=random_scale[2],
                                          box_filter=self.box_filter,
                                          image_validator=self.image_validator,
                                          n_trials_max=self.n_trials_max)

        self.random_zoom_out = RandomScale(
            min_factor=random_scale[0],
            max_factor=random_scale[0],
            prob=random_scale[2],
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max)

        # random patch generator is not used for the moment but it could be useful in your project
        self.patch_coord_generator = PatchCoordinateGenerator(
            must_match='h_w',
            min_scale=min_scale,
            max_scale=max_scale,
            scale_uniformly=False,
            min_aspect_ratio=min_aspect_ratio,
            max_aspect_ratio=max_aspect_ratio)

        self.random_patch = RandomPatch(
            patch_coord_generator=self.patch_coord_generator,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            prob=0.5,
            can_fail=False)

        # If we zoom in, do translation before scaling.
        self.sequence1 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.random_horizontal_flip, self.random_vertical_flip,
            self.random_translate, self.random_rotate_big,
            self.random_rotate_small, self.random_zoom_in, self.random_patch,
            self.resize
        ]

        # If we zoom out, do translation after scaling.
        self.sequence2 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.random_horizontal_flip, self.random_vertical_flip,
            self.random_zoom_out, self.random_translate,
            self.random_rotate_big, self.random_rotate_small,
            self.random_patch, self.resize
        ]

        self.sequence3 = [
            self.convert_to_3_channels, self.convert_to_uint8,
            self.random_horizontal_flip, self.random_vertical_flip,
            self.random_translate, self.random_rotate_big,
            self.random_rotate_small, self.resize
        ]
コード例 #5
0
    def __init__(
        self,
        random_brightness=(-48, 48, 0.5),
        random_contrast=(0.5, 1.8, 0.5),
        random_saturation=(0.5, 1.8, 0.5),
        random_hue=(18, 0.5),
        random_flip=0.5,
        # 最后一个元素表示 prob
        random_translate=((0.03, 0.5), (0.03, 0.5), 0.5),
        # 最后一个元素表示 prob
        random_scale=(0.5, 2.0, 0.5),
        # translate or scale 后的 image 如果不合格可以重复进行的最大次数
        n_trials_max=3,
        clip_boxes=True,
        overlap_criterion_box_filter='area',
        overlap_criterion_validator='area',
        bounds_box_filter=(0.3, 1.0),
        bounds_validator=(0.5, 1.0),
        n_boxes_min=1,
        background=(0, 0, 0),
        labels_format=('class_id', 'xmin', 'ymin', 'xmax', 'ymax')):

        if (random_scale[0] >= 1) or (random_scale[1] <= 1):
            raise ValueError(
                "This sequence of transformations only makes sense"
                "if the minimum scaling factor is <1 and the maximum scaling factor is >1."
            )
        self.n_trials_max = n_trials_max
        self.clip_boxes = clip_boxes
        self.overlap_criterion_box_filter = overlap_criterion_box_filter
        self.overlap_criterion_validator = overlap_criterion_validator
        self.bounds_box_filter = bounds_box_filter
        self.bounds_validator = bounds_validator
        self.n_boxes_min = n_boxes_min
        self.background = background
        self.labels_format = labels_format

        # Determines which boxes are kept in an image after the transformations have been applied.
        self.box_filter = BoxFilter(
            check_overlap=True,
            check_min_area=True,
            check_degenerate=True,
            overlap_criterion=self.overlap_criterion_box_filter,
            overlap_bounds=self.bounds_box_filter,
            min_area=16,
            labels_format=self.labels_format)

        # Determines whether the result of the transformations is a valid training image.
        self.image_validator = ImageValidator(
            overlap_criterion=self.overlap_criterion_validator,
            overlap_bounds=self.bounds_validator,
            n_boxes_min=self.n_boxes_min,
            labels_format=self.labels_format)

        # Utility distortions
        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        # Make sure all images end up having 3 channels.
        self.convert_to_3_channels = ConvertTo3Channels()

        # Photometric transformations
        self.random_brightness = RandomBrightness(lower=random_brightness[0],
                                                  upper=random_brightness[1],
                                                  prob=random_brightness[2])
        self.random_contrast = RandomContrast(lower=random_contrast[0],
                                              upper=random_contrast[1],
                                              prob=random_contrast[2])
        self.random_saturation = RandomSaturation(lower=random_saturation[0],
                                                  upper=random_saturation[1],
                                                  prob=random_saturation[2])
        self.random_hue = RandomHue(max_delta=random_hue[0],
                                    prob=random_hue[1])

        # Geometric transformations
        self.random_flip = RandomFlip(dim='horizontal',
                                      prob=random_flip,
                                      labels_format=self.labels_format)
        self.random_translate = RandomTranslate(
            dy_minmax=random_translate[0],
            dx_minmax=random_translate[1],
            prob=random_translate[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)
        self.random_zoom_in = RandomScale(min_factor=1.0,
                                          max_factor=random_scale[1],
                                          prob=random_scale[2],
                                          clip_boxes=self.clip_boxes,
                                          box_filter=self.box_filter,
                                          image_validator=self.image_validator,
                                          n_trials_max=self.n_trials_max,
                                          background=self.background,
                                          labels_format=self.labels_format)
        self.random_zoom_out = RandomScale(
            min_factor=random_scale[0],
            max_factor=1.0,
            prob=random_scale[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)

        # If we zoom in, do translation before scaling.
        self.sequence1 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.random_translate, self.random_zoom_in, self.random_flip
        ]

        # If we zoom out, do scaling before translation.
        self.sequence2 = [
            self.convert_to_3_channels, self.convert_to_float32,
            self.random_brightness, self.random_contrast,
            self.convert_to_uint8, self.convert_RGB_to_HSV,
            self.convert_to_float32, self.random_saturation, self.random_hue,
            self.convert_to_uint8, self.convert_HSV_to_RGB,
            self.convert_to_float32, self.random_zoom_out,
            self.random_translate, self.random_flip
        ]
コード例 #6
0
    def __init__(
        self,
        random_brightness=(-48, 48, 0.5),
        random_contrast=(0.5, 1.8, 0.5),
        random_saturation=(0.5, 1.8, 0.5),
        random_hue=(18, 0.5),
        random_flip=0.5,
        random_translate=((0.03, 0.5), (0.03, 0.5), 0.5),
        random_scale=(0.5, 2.0, 0.5),
        random_gaussian_noise=(0.5, 0., 10),  # gaussine noise
        random_poisson_noise=(0.5, 60),  # poisson noise
        random_salt_pepper_noise=(0.5, 0.5,
                                  0.005),  # salt&pepper or impalse noise 
        random_row_defect=(0.5, 1),  # row defect
        random_col_defect=(0.5, 1),  # col defect
        n_trials_max=3,
        clip_boxes=True,
        overlap_criterion='area',
        bounds_box_filter=(0.3, 1.0),
        bounds_validator=(0.5, 1.0),
        n_boxes_min=1,
        background=(0, 0, 0),
        labels_format={
            'class_id': 0,
            'xmin': 1,
            'ymin': 2,
            'xmax': 3,
            'ymax': 4
        }):

        if (random_scale[0] >= 1) or (random_scale[1] <= 1):
            raise ValueError(
                "This sequence of transformations only makes sense if the minimum scaling factor is <1 and the maximum scaling factor is >1."
            )

        self.n_trials_max = n_trials_max
        self.clip_boxes = clip_boxes
        self.overlap_criterion = overlap_criterion
        self.bounds_box_filter = bounds_box_filter
        self.bounds_validator = bounds_validator
        self.n_boxes_min = n_boxes_min
        self.background = background
        self.labels_format = labels_format

        # Determines which boxes are kept in an image after the transformations have been applied.
        self.box_filter = BoxFilter(check_overlap=True,
                                    check_min_area=True,
                                    check_degenerate=True,
                                    overlap_criterion=self.overlap_criterion,
                                    overlap_bounds=self.bounds_box_filter,
                                    min_area=16,
                                    labels_format=self.labels_format)

        # Determines whether the result of the transformations is a valid training image.
        self.image_validator = ImageValidator(
            overlap_criterion=self.overlap_criterion,
            bounds=self.bounds_validator,
            n_boxes_min=self.n_boxes_min,
            labels_format=self.labels_format)

        # Utility distortions
        self.convert_RGB_to_HSV = ConvertColor(current='RGB', to='HSV')
        self.convert_HSV_to_RGB = ConvertColor(current='HSV', to='RGB')
        self.convert_to_float32 = ConvertDataType(to='float32')
        self.convert_to_uint8 = ConvertDataType(to='uint8')
        self.convert_to_3_channels = ConvertTo3Channels(
        )  # Make sure all images end up having 3 channels.
        self.convert_to_1_channel = ConvertTo1Channel(
        )  # Make sure all images end up having 3 channels.

        # Photometric transformations
        self.random_brightness = RandomBrightness(lower=random_brightness[0],
                                                  upper=random_brightness[1],
                                                  prob=random_brightness[2])
        self.random_contrast = RandomContrast(lower=random_contrast[0],
                                              upper=random_contrast[1],
                                              prob=random_contrast[2])
        self.random_saturation = RandomSaturation(lower=random_saturation[0],
                                                  upper=random_saturation[1],
                                                  prob=random_saturation[2])
        self.random_hue = RandomHue(max_delta=random_hue[0],
                                    prob=random_hue[1])

        # Geometric transformations
        self.random_flip = RandomFlip(dim='horizontal',
                                      prob=random_flip,
                                      labels_format=self.labels_format)
        self.random_translate = RandomTranslate(
            dy_minmax=random_translate[0],
            dx_minmax=random_translate[1],
            prob=random_translate[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)
        self.random_zoom_in = RandomScale(min_factor=1.0,
                                          max_factor=random_scale[1],
                                          prob=random_scale[2],
                                          clip_boxes=self.clip_boxes,
                                          box_filter=self.box_filter,
                                          image_validator=self.image_validator,
                                          n_trials_max=self.n_trials_max,
                                          background=self.background,
                                          labels_format=self.labels_format)
        self.random_zoom_out = RandomScale(
            min_factor=random_scale[0],
            max_factor=1.0,
            prob=random_scale[2],
            clip_boxes=self.clip_boxes,
            box_filter=self.box_filter,
            image_validator=self.image_validator,
            n_trials_max=self.n_trials_max,
            background=self.background,
            labels_format=self.labels_format)

        # noises and sensor defects
        self.random_RowDefect = RandomRowDefect(prob=random_row_defect[0],
                                                thikness=random_row_defect[1])
        self.random_col_defect = RandomColDefect(prob=random_col_defect[0],
                                                 thikness=random_col_defect[1])
        self.random_salt_pepper = RandomSaltPepperNoise(
            prob=random_salt_pepper_noise[0],
            salt_vs_pepper_ratio=random_salt_pepper_noise[1],
            percentage=random_salt_pepper_noise[2])
        self.random_poisson = RandomPoissonNoise(
            prob=random_poisson_noise[0], Lambda=random_poisson_noise[1])
        self.random_gaussian = RandomGaussianNoise(
            prob=random_gaussian_noise[0],
            mean=random_gaussian_noise[1],
            sigma=random_gaussian_noise[2])

        # If we zoom in, do translation before scaling.
        self.sequence1 = [
            self.convert_to_1_channel,
            self.convert_to_float32,
            self.random_brightness,
            self.random_contrast,
            #                          self.convert_to_uint8,
            #                          self.convert_RGB_to_HSV,
            #                          self.convert_to_float32,
            #                          self.random_saturation,
            #                          self.random_hue,
            self.convert_to_uint8,
            #                          self.convert_HSV_to_RGB,
            self.random_translate,
            self.random_zoom_in,
            self.random_flip,
            self.random_salt_pepper,
            self.random_poisson,
            self.random_gaussian,
            self.random_col_defect,
            self.convert_to_1_channel
        ]

        # If we zoom out, do scaling before translation.
        self.sequence2 = [
            self.convert_to_1_channel,
            self.convert_to_float32,
            self.random_brightness,
            #                          self.convert_to_uint8,
            #                          self.convert_RGB_to_HSV,
            #                          self.convert_to_float32,
            #                          self.random_saturation,
            #                          self.random_hue, #
            #                          self.convert_to_uint8,
            #                          self.convert_HSV_to_RGB,
            self.convert_to_float32,
            self.random_contrast,
            self.convert_to_uint8,
            self.random_zoom_out,
            self.random_translate,
            self.random_flip,
            self.random_salt_pepper,
            self.random_poisson,
            self.random_gaussian,
            self.random_col_defect,
            self.convert_to_1_channel
        ]