cv2.fillPoly 和 cv2.fillConvexPoly：非凸任意形状填充和凸填充

最新推荐文章于 2025-06-12 16:24:12 发布

RockyRich

最新推荐文章于 2025-06-12 16:24:12 发布

阅读量3.1w

点赞数 7

CC 4.0 BY-SA版权

分类专栏：凸和非凸多边形填充数字图像处理文章标签： python图像处理

本文链接：https://blog.youkuaiyun.com/sunyao_123/article/details/74028796

数字图像处理同时被 2 个专栏收录

2 篇文章

订阅专栏

凸和非凸多边形填充

1 篇文章

订阅专栏

本文详细介绍了OpenCV中用于填充多边形的两个函数：cv2.fillPoly与cv2.fillConvexPoly。cv2.fillPoly能够填充复杂的多边形区域，包括有洞或多边形自相交的情况；而cv2.fillConvexPoly主要用于填充凸多边形，其运行速度更快。文中还提供了具体的使用示例。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

cv2.fillConvexPoly:
官方文档：The function fillConvexPoly draws a filled convex polygon. This function is much faster than the function fillPoly . It can fill not only convex polygons but any monotonic polygon without self-intersections, that is, a polygon whose contour intersects every horizontal line (scan line) twice at the most (though, its top-most and/or the bottom edge could be horizontal).
使用方法：

import cv2
import numpy

a = numpy.zeros((10,10))
triangle = numpy.array([ [1,3], [4,8], [1,9] ], numpy.int32)#[1，3]，[4，8],[1,9]为要填充的轮廓坐标
cv2.fillConvexPoly(a, triangle, 1)

cv2.fillPoly:
官方文档：The function fillPoly fills an area bounded by several polygonal contours. The function can fill complex areas, for example, areas with holes, contours with self-intersections (some of their parts), and so forth.
使用方法：

cv2.fillPoly(a, [triangle], 1)

如果有多个形状：

cv2.fillPoly(a, [triangle, square, hexagon], 1)