private void MatchBySurf(Mat src1, Mat src2)
{
var gray1 = new Mat();
var gray2 = new Mat();
Cv2.CvtColor(src1, gray1, ColorConversionCodes.BGR2GRAY);
Cv2.CvtColor(src2, gray2, ColorConversionCodes.BGR2GRAY);
var surf = SURF.Create(500, 4, 2, true);
// Detect the keypoints and generate their descriptors using SURF
KeyPoint[] keypoints1, keypoints2;
var descriptors1 = new MatOfFloat();
var descriptors2 = new MatOfFloat();
surf.Compute(gray1, null, out keypoints1, descriptors1);
surf.Compute(gray2, null, out keypoints2, descriptors2);
// Match descriptor vectors
var bfMatcher = new BFMatcher(NormTypes.L2, false);
var flannMatcher = new FlannBasedMatcher();
DMatch[] bfMatches = bfMatcher.Match(descriptors1, descriptors2);
DMatch[] flannMatches = flannMatcher.Match(descriptors1, descriptors2);
// Draw matches
var bfView = new Mat();
Cv2.DrawMatches(gray1, keypoints1, gray2, keypoints2, bfMatches, bfView);
var flannView = new Mat();
Cv2.DrawMatches(gray1, keypoints1, gray2, keypoints2, flannMatches, flannView);
using (new Window("SURF matching (by BFMather)", WindowMode.AutoSize, bfView))
using (new Window("SURF matching (by FlannBasedMatcher)", WindowMode.AutoSize, flannView))
{
Cv2.WaitKey();
}
}
private void FindMatchingFeatures_Click(object sender, EventArgs e)
{
var file1 = comboBox1.SelectedItem.ToString();
var file2 = comboBox2.SelectedItem.ToString();
using (var img1 = new Mat(file1, ImreadModes.GrayScale))
using (var img2 = new Mat(file2, ImreadModes.GrayScale))
using (var dst = new Mat())
{
// find keypoints
//var kp1 = FindFeatures(Constants.ImageControl1);
//var kp2 = FindFeatures(Constants.ImageControl2);
// find descriptors
var descriptors1 = new Mat();
var descriptors2 = new Mat();
var kp1 = FindFeaturesDescriptors_ORB(file1, out descriptors1);
var kp2 = FindFeaturesDescriptors_ORB(file2, out descriptors2);
// find keypoint matches
var bfMatcher = new BFMatcher(NormTypes.Hamming2, true);
DMatch[] bfMatches = bfMatcher.Match(descriptors1, descriptors2);
// draw things
Cv2.DrawMatches(img1, kp1, img2, kp2, bfMatches, dst);
using (new Window("ORB matching (by BFMatcher)", WindowMode.FreeRatio, dst))
{
Cv2.WaitKey();
}
}
}
