Update app.py

app.py

@@ -114,7 +114,7 @@ def detect_skin_smoothing(img):
     if skin_ratio < 0.02:
         return -1.0, skin_ratio, skin_vis
 
-    gray = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY).astype(np.float32)
+    gray = cv2.cvtColor(img, cv2.COLOR_RGB2GRAY)   # uint8 — CV_64F exige uint8 en entrée
     lap  = np.abs(cv2.Laplacian(gray, cv2.CV_64F))
     skin_texture = lap[skin_mask == 1]
 
@@ -285,4 +285,4 @@ with gr.Blocks() as demo:
 
     run_btn.click(process, inputs=in_img, outputs=[out_plot, out_text])
 
-demo.launch(share=True, theme=gr.themes.Soft())
+demo.launch(share=True, theme=gr.themes.Soft())