MATLAB: Getting the “Count” value of feature matching

image processingMATLAB

I have a template image which has features identified and I then have a sample image which I identify feature points and then try to match them against the template image.
load('im1.mat');%This loads I1 and points1
I2 = rgb2gray(imread('/home/colin/downloads/matlabImages/small.jpg'));
points2 = detectHarrisFeatures(I2);
[features2, valid_points2] = extractFeatures(I2, points2);
[features1, valid_points1] = extractFeatures(I1, points1);
indexPairs = matchFeatures(features1, features2);
matched_points1 = valid_points1(indexPairs(:, 1), :);
matched_points2 = valid_points2(indexPairs(:, 2), :);
figure; showMatchedFeatures(I1, I2, matched_points1, matched_points2);
disp(matched_points1);
I am looking to get the number of matched points. When I print matched_points1 I get the following print out:
2x1 cornerPoints array with properties:
    Location: [2x2 single]
      Metric: [2x1 single]
       Count: 2
How can I just get the number from the "Count" value stored in a variable?

Best Answer

count1 = matched_points1.count;
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