Update app.py

app.py

@@ -12,9 +12,12 @@ def image_to_sketch(image, kernel_size=3):
     inverted_blurred = 255 - blurred_image
     sketch = cv2.divide(gray_image, inverted_blurred, scale=256.0)
     
+    # Apply adaptive thresholding to enhance edges
+    adaptive_thresh = cv2.adaptiveThreshold(sketch, 255, cv2.ADAPTIVE_THRESH_MEAN_C, cv2.THRESH_BINARY, 9, 2)
+    
     # Apply morphological operation to thicken the outlines
     kernel = np.ones((kernel_size, kernel_size), np.uint8)
-    sketch = cv2.dilate(sketch, kernel, iterations=1)
+    sketch = cv2.dilate(adaptive_thresh, kernel, iterations=1)
     
     return sketch
 
@@ -66,7 +69,7 @@ st.markdown("""
 # Example conversions
 st.subheader("Example Conversions")
 
-# Replace 'Dog.jpg' with the path to an example image if running locally
+# Load and display example image
 example_image_path = 'Dog.jpg'
 example_image = cv2.imread(example_image_path)