opencv绘制透明的点

def plot_vertices(image, vertices):vertices = np.round(vertices).astype(np.int32)overlay = image.copy()for i in range(0, vertices.shape[0], 2):st = vertices[i, :2]overlay = cv2.circle(overlay,(st[0],

Frank（Zhiyang-Dou）

1890人浏览 · 2021-01-12 17:39:33

Frank（Zhiyang-Dou） · 2021-01-12 17:39:33 发布

效果

在这里插入图片描述

代码

def plot_vertices(image, vertices):
    vertices = np.round(vertices).astype(np.int32)
    overlay = image.copy()
    for i in range(0, vertices.shape[0], 2):
        st = vertices[i, :2]
        overlay = cv2.circle(overlay,(st[0], st[1]), 1, (200,0,0), -1)
    alpha = 0.35  # Transparency factor.
        # Following line overlays transparent rectangle over the image
    image = cv2.addWeighted(overlay, alpha, image, 1 - alpha, 0)
    return image