threshold operations中文什么意思

operations: 操作設(shè)置; 購買行為; 企業(yè)運(yùn)作; 日常操作; 手術(shù)的實(shí)際操作; 業(yè)務(wù)營運(yùn); 曾經(jīng)動過手術(shù)
at the threshold of: 在的初期; 在...的開始
on the threshold: 在門口
on the threshold of: 在...的開頭, 在...快要開始的時候, 在...的前夕; 在……的開始/初期
the threshold of: 在的開始

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above-threshold operation method
超閾值運(yùn)轉(zhuǎn)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
減背景技術(shù)是一種常用的運(yùn)動對象檢測方法，其基本思想是將視頻中當(dāng)前幀圖象與事先存儲的或?qū)崟r得到的背景模型相減，通過閾值操作，得出運(yùn)動區(qū)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
該方法首先利用統(tǒng)計的方法得到背景模型，并實(shí)時地對背景模型進(jìn)行更新，以適應(yīng)外界光線變化和場景本身的變化，閾值操作后，用形態(tài)學(xué)和連通域檢測的方法進(jìn)行后處理，消除噪聲和背景擾動帶來的影響，最后，在hsv顏色空間下檢測出陰影，得到準(zhǔn)確的運(yùn)動對象區(qū)域。

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