translation.en: So we use some clever image processing techniques to get a very accurate measurement of the color at each pixel in the video, and then the way the color changes over time, and then we amplify those changes.
translation.zh: 所以我们应用了一些聪明的影像处理技巧 精确的测量每个像素中的颜色， 然后得出颜色随时间的变化， 再然后我们放大这些变化。