I am using below code snippet to compare two images.After compare, I want to draw rectangle around the object which are not matching.
int retVal = 0;
int notMactingCount = 0;
long startTime = System.currentTimeMillis();
// Load images to compare
Mat img1 = Imgcodecs.imread(filename1, Imgcodecs.CV_LOAD_IMAGE_COLOR);
Mat img2 = Imgcodecs.imread(filename2, Imgcodecs.CV_LOAD_IMAGE_COLOR);
System.out.println(img1);
// Declare key point of images
MatOfKeyPoint keypoints1 = new MatOfKeyPoint();
MatOfKeyPoint keypoints2 = new MatOfKeyPoint();
Mat descriptors1 = new Mat();
Mat descriptors2 = new Mat();
// Definition of ORB key point detector and descriptor extractors
FeatureDetector detector = FeatureDetector.create(FeatureDetector.ORB);
DescriptorExtractor extractor = DescriptorExtractor.create(DescriptorExtractor.ORB);
// Detect key points
detector.detect(img1, keypoints1);
detector.detect(img2, keypoints2);
// Extract descriptors
extractor.compute(img1, keypoints1, descriptors1);
extractor.compute(img2, keypoints2, descriptors2);
// Definition of descriptor matcher
DescriptorMatcher matcher = DescriptorMatcher.create(DescriptorMatcher.BRUTEFORCE_HAMMING );
// Match points of two images
MatOfDMatch matches = new MatOfDMatch();
System.out.println("Type of Image1= " + descriptors1.type() + ", Type of Image2= " + descriptors2.type());
System.out.println("Cols of Image1= " + descriptors1.cols() + ", Cols of Image2= " + descriptors2.cols());
System.out.println("keypoints1 of Image1= " + keypoints1.cols() + ", keypoints2 of Image2= " + keypoints2.cols());
// Visualize the matches and save the visualization.
if (descriptors2.cols() == descriptors1.cols()) {
matcher.match(descriptors1, descriptors2 ,matches);
// Check matches of key points
DMatch[] match = matches.toArray();
double max_dist = 0; double min_dist = 100;
for (int i = 0; i < descriptors1.rows(); i++) {
double dist = match[i].distance;
if( dist < min_dist ) min_dist = dist;
if( dist > max_dist ) max_dist = dist;
}
System.out.println("max_dist=" + max_dist + ", min_dist=" + min_dist);
// Extract good images (distances are under 10)
for (int i = 0; i < descriptors1.rows(); i++) {
if (match[i].distance <= 10) {
retVal++;
}else{
notMactingCount++;
}
}
System.out.println("matching count=" + retVal+" notMactingCount="+notMactingCount);
}
Please share code snippet to draw rectangle around the object which are not matching or any link reference
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