我使用OpenCV的流域與我的形象:如何通過OpenCV流域獲取對象之間的輪廓?
#include "opencv2/opencv.hpp"
#include <string>
using namespace cv;
using namespace std;
class WatershedSegmenter{
private:
cv::Mat markers;
public:
void setMarkers(cv::Mat& markerImage)
{
markerImage.convertTo(markers, CV_32S);
}
cv::Mat process(cv::Mat &image)
{
cv::watershed(image, markers);
markers.convertTo(markers,CV_8U);
return markers;
}
};
int main(int argc, char* argv[])
{
cv::Mat image = cv::imread("d:\\projekty\\OpenCV\\trainData\\base01.jpg"); //http://i.imgur.com/sEWFHfY.jpg
cv::Mat blank(image.size(),CV_8U,cv::Scalar(0xFF));
cv::Mat dest;
imshow("originalimage", image);
// Create markers image
cv::Mat markers(image.size(),CV_8U,cv::Scalar(-1));
//Rect(topleftcornerX, topleftcornerY, width, height);
//top rectangle
markers(Rect(0,0,image.cols, 5)) = Scalar::all(1);
//bottom rectangle
markers(Rect(0,image.rows-5,image.cols, 5)) = Scalar::all(1);
//left rectangle
markers(Rect(0,0,5,image.rows)) = Scalar::all(1);
//right rectangle
markers(Rect(image.cols-5,0,5,image.rows)) = Scalar::all(1);
//centre rectangle
int centreW = image.cols/4;
int centreH = image.rows/4;
markers(Rect((image.cols/2)-(centreW/2),(image.rows/2)-(centreH/2), centreW, centreH)) = Scalar::all(2);
markers.convertTo(markers,CV_BGR2GRAY);
imshow("markers", markers);
//Create watershed segmentation object
WatershedSegmenter segmenter;
segmenter.setMarkers(markers);
cv::Mat wshedMask = segmenter.process(image);
cv::Mat mask;
convertScaleAbs(wshedMask, mask, 1, 0);
double thresh = threshold(mask, mask, 1, 255, THRESH_BINARY);
bitwise_and(image, image, dest, mask);
dest.convertTo(dest,CV_8U);
imshow("final_result", dest);
cv::waitKey(0);
return 0;
}
但是,這給我的只有個別面膜。我也嘗試將標記創建爲兩點 - 結果只有一個掩碼。 OpenCV能否像例子http://biodynamics.ucsd.edu/ir/那樣通過輪廓分割單元格(對象)? 如果沒有,是否可以創建結果掩碼值爲:第1個對象,第2個,第99個,第99個99個?
請參閱http://opencv-code.com/tutorials/count-and-segment-overlapping-objects-with-watershed-and-distance-transform/ – Borneq
但這是工作的一半,不同顏色的物體,但不是輪廓 – Borneq