c中opencv中轮廓/对象的质心？ [英] centroid of contour/object in opencv in c?

问题描述

是否有一些更好的方法可以在opencv中找到轮廓质心，而无需使用内置函数？

is there some good and better way to find centroid of contour in opencv, without using built in functions?

推荐答案

虽然Sonaten的答案完全正确，但有一种简单的方法：使用专用的opencv函数： （）

While Sonaten's answer is perfectly correct, there is a simple way to do it: Use the dedicated opencv function for that: moments()

http://opencv.itseez.com/modules/imgproc/doc/structural_analysis_and_shape_descriptors.html?highlight=moments#moments

确实如此不仅返回质心，还有一些关于你的形状的统计数据。您可以发送轮廓或光栅形状（二进制图像），最适合您的需要。

It does not only returns the centroid, but some more statistics about your shape. And you can send it a contour or a raster shape (binary image), whatever best fits your need.

编辑

示例（修改）来自学习OpenCV，由gary bradsky提供

example (modified) from "Learning OpenCV", by gary bradsky

CvMoments moments; 
double M00, M01, M10;

cvMoments(contour,&moments); 
M00 = cvGetSpatialMoment(&moments,0,0); 
M10 = cvGetSpatialMoment(&moments,1,0); 
M01 = cvGetSpatialMoment(&moments,0,1); 
centers[i].x = (int)(M10/M00); 
centers[i].y = (int)(M01/M00); 

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