我试图计算图像重心,像这样:找到一个图像的轮廓质心
// Calculate centroid
double signedArea = 0.0;
sskp_point centroid;
for(int i=0;i<numPoints;i++)
{
double a = (points[i].x*points[(i+1)%numPoints].y)-(points[(i+1)%numPoints].x*points[i].y);
signedArea += a;
centroid.x += (points[i].x*points[(i+1)%numPoints].x)*a;
centroid.y += (points[i].y*points[(i+1)%numPoints].y)*a;
printf("points[%d] = { %f, %f }\n",i,points[i].x,points[i].y);
}
signedArea /= 2.0;
centroid.x /= (6*signedArea);
centroid.y /= (6*signedArea);
printf("centroid = { %f, %f }\n",centroid.x,centroid.y);
我从算法here适应这一点,但它给我的错误results,谁能告诉我是什么这适应错了吗?
我真是个傻瓜,谢谢。 – user293895 2012-07-18 13:24:13
它发生了。人非圣贤孰能。 :d – 2012-07-18 13:25:15