eduardolundgren/tracking.js

I want to see the similarity percentage between two images using Brief.

nurulalamador opened this issue · 1 comments

nurulalamador commented

I want to see the similarity percentages between the two images using Brief. I can't understand too much by reading Documentation how can I do this. Can anyone help me with this, please?

    var width = 393;
    var height = 295;
    var canvas = document.getElementById('canvas');
    var context = canvas.getContext('2d');

    var image1 = document.getElementById('image1');
    var image2 = document.getElementById('image2');

    window.descriptorLength = 256;
    window.matchesShown = 30;
    window.blurRadius = 3;

    var doMatch = function() {
      tracking.Brief.N = window.descriptorLength;

      context.drawImage(image1, 0, 0, width, height);
      context.drawImage(image2, width, 0, width, height);
  
      var imageData1 = context.getImageData(0, 0, width, height);
      var imageData2 = context.getImageData(width, 0, width, height);
  
      var gray1 = tracking.Image.grayscale(tracking.Image.blur(imageData1.data, width, height, blurRadius), width, height);
      var gray2 = tracking.Image.grayscale(tracking.Image.blur(imageData2.data, width, height, blurRadius), width, height);
  
      var corners1 = tracking.Fast.findCorners(gray1, width, height);
      var corners2 = tracking.Fast.findCorners(gray2, width, height);
  
      var descriptors1 = tracking.Brief.getDescriptors(gray1, width, corners1);
      var descriptors2 = tracking.Brief.getDescriptors(gray2, width, corners2);
  
      var matches = tracking.Brief.reciprocalMatch(corners1, descriptors1, corners2, descriptors2);

      matches.sort(function(a, b) {
        return b.confidence - a.confidence;
      });
  
      var similarityPercentage = **What Shoud I Count Here?**;
      console.log(similarityPercentage)
    };

    doMatch();

https://trackingjs.com/examples/brief.html

tj-creative commented