METHOD, APPARATUS AND DEVICE FOR SEGMENTING AN IMAGE

摘要

The present disclosure relates to a method, apparatus and device for segmenting image. The method includes: calculating an a priori probability of appearing a head-shoulder foreground at each pixel in an image having a preset size; selecting head-shoulder foreground and background sample pixels from an image to be segmented according to the a priori probability, and a head-shoulder foreground and a background probability threshold set in advance; calculating a first color likelihood probability of the head-shoulder foreground and a second color likelihood probability of the background according to color feature vectors of the head-shoulder foreground and the background sample pixels; calculating a first a posteriori probability of the head-shoulder foreground and a second a posteriori probability of the background according to the a priori probability, first and second color likelihood probabilities; and performing head-shoulder segmentation on the image according to the first and second a posteriori probabilities. The segmentation precision is high.