基于视频的火焰检测，逐帧截取视频，三帧差分法获取动态目标，通过颜色判别，以及火焰特征判别，检测并框出火焰区域。(Video based flame detection, video capture by frame by frame, three frame difference method to obtain dynamic targets, by color discrimination, and flame characteristics discrimination, detection and frame out the flame area.)