Function compare

server.js:509–522

(a, b)

}

function compare(a, b) {
  const sa = stats(a);
  const sb = stats(b);
  let corr = 0;
  let mse = 0;
  for (let i = 0; i < a.length; i += 1) {
    corr += ((a[i] - sa.mean) / sa.std) * ((b[i] - sb.mean) / sb.std);
    const d = (a[i] - b[i]) / 255;
    mse += d * d;
  }
  corr /= a.length;
  mse /= a.length;
  return { corr, mse };
}

function toneRecommendation(video1Frames, video2Frames, trimEnd1, trimStart2, fps) {
  const v1Index = Math.max(0, video1Frames.length - trimEnd1 - 1);