Merge branch 'develop'

Author: pythonlessons

CHANGELOG.md

@@ -1,3 +1,11 @@
+## [1.2.2] - 2024-03-15
+### Changed
+- Bug fixed with `loss_info` local variable in `mltu.torch.model.Model` object
+
+### Added
+- Added `RandomColorMode` and `RandomZoom` into `mltu.augmentors`
+
+
 ## [1.2.1] - 2024-03-12
 ### Changed
 - Fixed many minor bugs

mltu/__init__.py

@@ -1,4 +1,4 @@
-__version__ = "1.2.1"
+__version__ = "1.2.2"
 
 from .annotations.images import Image
 from .annotations.images import CVImage

mltu/augmentors.py

@@ -6,7 +6,7 @@
 
 from . import Image
 from mltu.annotations.audio import Audio
-from mltu.annotations.detections import Detections, Detection
+from mltu.annotations.detections import Detections, Detection, BboxType
 
 """ 
 Implemented image augmentors:
@@ -20,6 +20,8 @@
 - RandomFlip
 - RandomDropBlock
 - RandomMosaic
+- RandomZoom
+- RandomColorMode
 
 Implemented audio augmentors:
 - RandomAudioNoise
@@ -379,21 +381,22 @@ def __init__(
         self, 
         random_chance: float = 0.5,
         log_level: int = logging.INFO,
-        sigma: typing.Union[int, float] = 0.5,
+        sigma: typing.Union[int, float] = 1.5,
         augment_annotation: bool = False,
         ) -> None:
         """ Randomly erode and dilate image
         
         Args:
             random_chance (float): Float between 0.0 and 1.0 setting bounds for random probability. Defaults to 0.5.
             log_level (int): Log level for the augmentor. Defaults to logging.INFO.
-            sigma (int, float): standard deviation of the Gaussian kernel
+            sigma (int, float): maximum sigma value for Gaussian blur. Defaults to 1.5.
         """
         super(RandomGaussianBlur, self).__init__(random_chance, log_level, augment_annotation)
         self.sigma = sigma
 
     def augment(self, image: Image) -> Image:
-        img = cv2.GaussianBlur(image.numpy(), (0, 0), self.sigma)
+        sigma = np.random.uniform(0, self.sigma)
+        img = cv2.GaussianBlur(image.numpy(), (0, 0), sigma)
 
         image.update(img)
 
@@ -716,6 +719,126 @@ def __call__(self, image: Image, annotation: typing.Any) -> typing.Tuple[Image,
         return image, annotation
 
 
+class RandomZoom(Augmentor):
+    def __init__(
+        self, 
+        random_chance: float = 0.5,
+        log_level: int = logging.INFO,
+        augment_annotation: bool = True,
+        object_crop_percentage: float = 0.5,
+        ) -> None:
+        """ Randomly zoom into an image
+        
+        Args:
+            random_chance (float): Float between 0.0 and 1.0 setting bounds for random probability. Defaults to 0.5.
+            log_level (int): Log level for the augmentor. Defaults to logging.INFO.
+            augment_annotation (bool): Whether to augment the annotation. Defaults to False.
+            object_crop_percentage (float): Percentage of the object allowed to be cropped. Defaults to 0.5.
+        """
+        super(RandomZoom, self).__init__(random_chance, log_level, augment_annotation)
+        self.object_crop_percentage = object_crop_percentage
+
+    @randomness_decorator
+    def __call__(self, image: Image, annotation: typing.Any) -> typing.Tuple[Image, typing.Any]:
+        """ Randomly zoom an image
+
+        Args:
+            image (Image): Image to be used for zoom
+            annotation (typing.Any): Annotation to be used for zoom
+
+        Returns:
+            image (Image): Zoomed image
+            annotation (typing.Any): Zoomed annotation if necessary
+        """
+        if isinstance(annotation, Detections) and self._augment_annotation:
+
+            dets = np.array([detection.xyxy for detection in annotation])
+            min_left = np.min(dets[:, 0])
+            min_top = np.min(dets[:, 1])
+            max_right = np.max(dets[:, 2])
+            max_bottom = np.max(dets[:, 3])
+
+            # Calculate the size of the object
+            object_width = max_right - min_left
+            object_height = max_bottom - min_top
+
+            crop_xmin = np.random.uniform(0, min_left + 0.25 * object_width * self.object_crop_percentage)
+            crop_ymin = np.random.uniform(0, min_top + 0.25 * object_height * self.object_crop_percentage)
+            crop_xmax = np.random.uniform(max_right - 0.25 * object_width * self.object_crop_percentage, 1)
+            crop_ymax = np.random.uniform(max_bottom - 0.25 * object_height * self.object_crop_percentage, 1)
+
+            crop_min_max = np.array([crop_xmin, crop_ymin, crop_xmax, crop_ymax])
+            new_xyxy = (crop_min_max * np.array([image.width, image.height, image.width, image.height])).astype(int)
+            new_image = image.numpy()[new_xyxy[1]:new_xyxy[3], new_xyxy[0]:new_xyxy[2]]
+            image.update(new_image)
+
+            crop_min_ratio = np.array([crop_xmin, crop_ymin, crop_xmin, crop_ymin])
+            crop_max_ratio = np.array([crop_xmax, crop_ymax, crop_xmax, crop_ymax])
+            new_dets = (dets - crop_min_ratio) / (crop_max_ratio - crop_min_ratio)
+
+            detections = []
+            for detection, new_det in zip(annotation, new_dets):
+                new_detection = Detection(
+                    new_det,
+                    label=detection.label, 
+                    labels=detection.labels,
+                    confidence=detection.confidence, 
+                    image_path=detection.image_path, 
+                    width=image.width, 
+                    height=image.height,
+                    relative=True,
+                    bbox_type = BboxType.XYXY
+                )
+
+                detections.append(new_detection)
+
+            annotation = Detections(
+                labels=annotation.labels,
+                width=image.width,
+                height=image.height,
+                detections=detections
+            )
+
+        return image, annotation
+    
+
+class RandomColorMode(Augmentor):
+    def __init__(
+        self, 
+        random_chance: float = 0.5,
+        log_level: int = logging.INFO,
+        augment_annotation: bool = False,
+        ) -> None:
+        """ Randomly change color mode of an image
+        
+        Args:
+            random_chance (float): Float between 0.0 and 1.0 setting bounds for random probability. Defaults to 0.5.
+            log_level (int): Log level for the augmentor. Defaults to logging.INFO.
+            augment_annotation (bool): Whether to augment the annotation. Defaults to False.
+        """
+        super(RandomColorMode, self).__init__(random_chance, log_level, augment_annotation)
+
+    @randomness_decorator
+    def __call__(self, image: Image, annotation: typing.Any) -> typing.Tuple[Image, typing.Any]:
+        """ Randomly change color mode of an image
+
+        Args:
+            image (Image): Image to be used for color mode change
+            annotation (typing.Any): Annotation to be used for color mode change
+
+        Returns:
+            image (Image): Color mode changed image
+            annotation (typing.Any): Color mode changed annotation if necessary
+        """
+        color_mode = np.random.choice([cv2.COLOR_BGR2GRAY, cv2.COLOR_BGR2HSV, cv2.COLOR_BGR2LAB, cv2.COLOR_BGR2YCrCb, cv2.COLOR_BGR2RGB])
+        new_image = cv2.cvtColor(image.numpy(), color_mode)
+        if color_mode == cv2.COLOR_BGR2GRAY:
+            new_image = cv2.cvtColor(new_image, cv2.COLOR_GRAY2BGR)
+        image.update(new_image)
+
+        return image, annotation
+    
+
 class RandomAudioNoise(Augmentor):
     """ Randomly add noise to audio
 

mltu/torch/model.py

@@ -177,13 +177,15 @@ def toDevice(self, data: np.ndarray, target: np.ndarray) -> typing.Tuple[torch.T
     def train_step(
         self, 
         data: typing.Union[np.ndarray, torch.Tensor], 
-        target: typing.Union[np.ndarray, torch.Tensor]
+        target: typing.Union[np.ndarray, torch.Tensor],
+        loss_info: dict = {}
         ) -> torch.Tensor:
         """ Perform one training step
 
         Args:
             data (typing.Union[np.ndarray, torch.Tensor]): training data
             target (typing.Union[np.ndarray, torch.Tensor]): training target
+            loss_info (dict, optional): additional loss information. Defaults to {}.
 
         Returns:
             torch.Tensor: loss
@@ -228,13 +230,15 @@ def train_step(
     def test_step(
         self, 
         data: typing.Union[np.ndarray, torch.Tensor], 
-        target: typing.Union[np.ndarray, torch.Tensor]
+        target: typing.Union[np.ndarray, torch.Tensor],
+        loss_info: dict = {}
         ) -> torch.Tensor:
         """ Perform one validation step
 
         Args:
             data (typing.Union[np.ndarray, torch.Tensor]): validation data
             target (typing.Union[np.ndarray, torch.Tensor]): validation target
+            loss_info (dict, optional): additional loss information. Defaults to {}.
 
         Returns:
             torch.Tensor: loss