Convert keypoints to point2f to store in a file or localstorage

jeremias · October 20, 2021, 3:41pm

its working now you can test it here:
https://albjeremias.github.io/trigger-cv/example/index.htm

So what i want to do is to store the object descriptors in the local storage of the browser or as a file (generated previously)

github.com

albjeremias/trigger-cv/blob/main/trigger-cv.js#L298

    
      
              let scale = videoWidth / object.im.cols;
              if (scale < 1) { // only resizes if resolution of the video is lower!
                let newSize = {width : videoWidth, height : parseInt(object.im.rows * scale)};
                cv.resize(object.im, object.im, newSize);
              }
          
          
    let orb = new cv.ORB();
              orb.setMaxFeatures(MAX_FEATURES);
          
          
    cv.cvtColor(object.im, object.gray, cv.COLOR_RGBA2GRAY, 0);
              orb.detectAndCompute(object.gray, new cv.Mat(), object.kp, object.descriptors);
          
          
    object.gray.delete();
              orb.delete();
          
          
    this.objectsToDetect.push(object);
            }
          
          
};

I wonder if generating it previously bring problems, but i will make some tests. the issue is that i use the videoWidth to calculate the descriptors, but it seems a bit irrelevant, since the image size changes on the camera image too…

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Convert keypoints to point2f to store in a file or localstorage

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