Update filters.py

filters.py

@@ -38,4 +38,8 @@ def edge_enhance(image, intensity: float = 1.5):
         [-1 * intensity,  9 * intensity, -1 * intensity],
         [-1 * intensity, -1 * intensity, -1 * intensity]
     ])
-    return cv2.filter2D(image, -1, kernel)
+    return cv2.filter2D(image, -1, kernel)
+
+@registry.register("Adjust Contrast", alpha=1.5)
+def adjust_contrast(image, alpha: float = 1.5):
+    return cv2.convertScaleAbs(image, alpha=alpha, beta=0)