threshold operation meaning in Chinese

阈运算

Above - threshold operation method
超阈值运转法激光器
Background subtraction is a commonly used moving objects detection method , it subtracts the background model which is stored beforehand or observed in time from the current frame , by threshold operation getting moving objects
减背景技术是一种常用的运动对象检测方法，其基本思想是将视频中当前帧图象与事先存储的或实时得到的背景模型相减，通过阈值操作，得出运动区域。
A statistical method is used to obtain the background model , which is updated real time in order to adapt to illumination changes and scene changes . after threshold operation , morphologic operation and connected region area measurement are introduced to solve background disturb problem . at last , shadows are detected using hsv color space information and gets exact moving regions
该方法首先利用统计的方法得到背景模型，并实时地对背景模型进行更新，以适应外界光线变化和场景本身的变化，阈值操作后，用形态学和连通域检测的方法进行后处理，消除噪声和背景扰动带来的影响，最后，在hsv颜色空间下检测出阴影，得到准确的运动对象区域。