Computer vision based evaluation method for general movement of baby

The invention provides a computer vision based evaluation method for general movement of a baby. The method comprises the steps of reading an acquired video through a computer; preprocessing the image by fuzzification and channel separation; calculating light flow of adjacent frames; extracting the baby body area; obtaining the movement light flow of the baby body area; displaying the baby movement in the images at all frames through one image; building an u-v right angle distribution map; counting the number of pixels in each part; counting all frames in the same area to obtain a speed counting histogram under different direction and size of all frames; evaluating the general movement of the baby according to the speed distribution in the histogram. The method is applied to complexity, variation and symmetry evaluation detection for general movement of the baby under a scene that a camera is fixed, and has the advantages of being high in generality, high in accuracy and fast to respond.