heatmap.py 文件源码

def drawOpacityCircle(self, x, y, colorR, colorG, colorB, radius, thickness):
        overlay = self.frame.copy()
        cv2.circle(overlay, (x, y), radius, (colorB, colorG, colorR), thickness)
        alpha = 0.25
        cv2.addWeighted(overlay, alpha, self.frame, 1 - alpha, 0, self.frame)