Exemplo n.º 1
0
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;
}
Exemplo n.º 2
0
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;
}