水漫填充：floodFill()函数
int floodFill( InputOutputArray image, InputOutputArray mask,
Point seedPoint, Scalar newVal, CV_OUT Rect* rect=0,
Scalar loDiff = Scalar(), Scalar upDiff = Scalar(),
int flags = 4 );
int floodFill( InputOutputArray image,
Point seedPoint, Scalar newVal, CV_OUT Rect* rect = 0,
Scalar loDiff = Scalar(), Scalar upDiff = Scalar(),
int flags = 4 );
1 #include<opencv2/opencv.hpp> 2 #include<iostream> 3 4 using namespace cv; 5 using namespace std; 6 7 int main(int argc, char** argv) { 8 Mat img = imread("C:\\Users\\Nelsoner\\Desktop\\Camera Roll\\05.jpg", 1); 9 Rect ccomp; 10 imshow("【原图】", img); 11 floodFill(img, Point(50, 300), Scalar(155, 255, 55), &ccomp, Scalar(20, 20, 20), Scalar(20, 20, 20)); 12 imshow("【效果图】", img); 13 14 waitKey(0); 15 16 return 0; 17 }
原文：http://www.cnblogs.com/Nelsoner/p/6786257.html