It has been focused in compute vision research fields. A improved HSI image difference model based on sequences image difference and second image difference is presented.
给出连续图像帧差分和二次帧差分改进的图像HSI差分模型，采用自适应分割算法能在任意条件下自动提取运动目标区域。
This system has implemented intelligent motion detection by utilizing a algorithm of difference image based on an automatically-updating background model.
利用背景自动更新模型的背景减法，实现了智能运动检测功能，并进行异常情况告警和启动告警录像；
It selects a threshold from a certain range to regard as one threshold which is the best threshold just as it makes the difference of stroke width in testing and model seal image minimum.
选定一定范围的灰度值作为可能的阈值，从中选出使待验章和样本章的笔划宽度相差最小时的阈值作为最佳阈值。
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