• 1. Difference image method: 差影法
• 2. image difference method: 图像差分方法
• 3. three image difference method: 三帧差分法

• 1.This system detected motion target using difference image method through threshold image segmentation, then automatically tracked target by using centroid tracking algorithm.
  该系统运用差分图像法，通过阈值图像分割来检测运动目标，并采用形心跟踪算法来自动跟踪目标。
  dict.yoduao.com
• 2.Identification algorithm mix difference image method and 4-connected boundary tracking method, besides, we improved the difference image method and built a new moving detection model finally.
  识别算法采用差影法与4邻域连通区域标记相结合，并对差影法进行改进，建立起一个新型的运动检测模型。
  dict.yoduao.com
• 3.The second algorithm is proposed because the method of difference image is not effective when the different information coming from two frames of difference image is too much or too little.
  算法二是针对两帧差分图像之间所提供的差异信息过多或过少这两种极端情况，用差影法粗分割对人脸图像进行预处理时失效而提出来的。
  dict.yoduao.com

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