void mouse_callback(int event,int x,int y,int flags, void* param)
{
switch(event)
{
case EVENT_MOUSEMOVE:
{
if(drawing_box)
{
box.width = x-box.x;
box.height = y-box.y;
Mat tmp = captureImage.clone();
cv::rectangle(tmp,Point(box.x,box.y),Point(box.x + box.width , box.y + box.height) , Scalar(0,255,0) , 3);
imshow(WindowName,tmp);
}
}
break;
case EVENT_LBUTTONDOWN:
{
drawing_box = true;
box = Rect(x,y,0,0);
}
break;
case EVENT_LBUTTONUP:
{
drawing_box = false;
if(box.width < 0)
{
box.x += box.width;
box.width *= -1;
}
if(box.height < 0)
{
box.y += box.height;
box.height *= -1;
}
//Â^¨ú¹Ï¹³
Mat copyCapture = captureImage.clone();
Mat tmp(copyCapture,box);
Mat grayImg;
cropImg = tmp;
cvtColor(cropImg,grayImg,CV_BGR2GRAY);
featureDetector.detect(grayImg,keyPoints);
featureExtractor.compute(grayImg,keyPoints,descriptors);
flannIndex.build(descriptors,flann::LshIndexParams(12,20,2),cvflann::FLANN_DIST_HAMMING);
}
break;
}
return;
}
void FeatureMatchThread::run()
{
Mat resultImg;
Mat grayImg;
cvtColor(cropImg,grayImg,CV_BGR2GRAY);
featureDetector.detect(grayImg,keyPoints);
featureExtractor.compute(grayImg,keyPoints,descriptors);
flannIndex.build(descriptors,flann::LshIndexParams(12,20,2),cvflann::FLANN_DIST_HAMMING);
while(true)
{
Mat captureImage_gray;
vector<KeyPoint> captureKeyPoints;
Mat captureDescription;
vector<DMatch> goodMatches;
cap >> captureImage;
if(captureImage.empty())
continue;
cvtColor(captureImage,captureImage_gray,CV_BGR2GRAY);
featureDetector.detect(captureImage_gray,captureKeyPoints);
featureExtractor.compute(captureImage_gray,captureKeyPoints,captureDescription);
Mat matchIndex(captureDescription.rows,2,CV_32SC1);
Mat matchDistance(captureDescription.rows,2,CV_32FC1);
flannIndex.knnSearch(captureDescription,matchIndex,matchDistance,2,flann::SearchParams());
for(int i=0;i<matchDistance.rows;i++)
{
if(matchDistance.at<float>(i,0) < 0.6 * matchDistance.at<float>(i,1))
{
DMatch dmatches(i,matchIndex.at<int>(i,0),matchDistance.at<float>(i,0));
goodMatches.push_back(dmatches);
}
}
drawMatches(captureImage,captureKeyPoints,cropImg,keyPoints,goodMatches,resultImg);
emit NewFeatureMatch(&resultImg);
imshow(WindowName,captureImage);
cv::setMouseCallback(WindowName,mouse_callback);
captureKeyPoints.clear();
goodMatches.clear();
waitKey(30);
}
return;
}