use addWeighted for blending

14 years ago · 55ba0af2bc
parent 85166360f1
commit 55ba0af2bc
1 changed files with 2 additions and 1 deletions
--- a/samples/python2/watershed.py
+++ b/samples/python2/watershed.py
@ -31,7 +31,8 @@ class App:
    def watershed(self):
        m = self.markers.copy()
        cv2.watershed(self.img, m)
-        vis = np.uint8( (self.img + self.colors[np.maximum(m, 0)]) / 2 )
+        overlay = self.colors[np.maximum(m, 0)]
+        vis = cv2.addWeighted(self.img, 0.5, overlay, 0.5, 0.0, dtype=cv2.CV_8UC3)
        cv2.imshow('watershed', vis)

    def run(self):