Update app.py

app.py

@@ -40,7 +40,7 @@ def detect_ellipses(img_path):
 
     if len(result) > 0:
         imgN = imgG.copy()
-        imgN = cv2.cvtColor(imgN, cv2.COLOR_BRAY2RGB)
+        imgN = cv2.cvtColor(imgN, cv2.COLOR_GRAY2RGB)
         for e in result:
             x, y, w, h, a, _ = e
             imgN = cv2.ellipse(imgN, (x, y), (w, h), -a, 0, 360, (0, 255, 0), 3) # image, center_coordinates, axesLength, angle, startAngle, endAngle, color, thickness