Update filters.py

filters.py

@@ -41,7 +41,7 @@ def edge_enhance(image, intensity: float = 1.5):
     return cv2.filter2D(image, -1, kernel)
 
 @registry.register("Canny Edge", defaults={'lower_threshold': 100, 'upper_threshold': 200, 'convert_to_gray': True}, min_vals={'lower_threshold': 0, 'upper_threshold': 255}, max_vals={'lower_threshold': 255, 'upper_threshold': 255}, step_vals={'lower_threshold': 1, 'upper_threshold': 1})
-def canny_edge(image, lower_threshold=100, upper_threshold=200, convert_to_gray=True):
+def canny_edge(image, lower_threshold: int=100, upper_threshold: int=200, convert_to_gray: bool=True):
     if convert_to_gray and len(image.shape) == 3:
         gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
     else: