blemish: n.瑕疵，缺点，污点；不名誉。 a blemish on his record 历史污点。 without blemish 十分完美。vt.有损…的完美，损害…的名誉；玷污 (opp. purify)。 The novel is blemished by those long descriptions. 那些冗长的描写使小说大为减色。
Then used the non - parameter gauss background model to take rolled strips surface blemish is proved to be effective the gradient difference non - parameter gauss background mode subtraction algorithm and the frame difference non - parameter gauss background model subtraction algorithm utilizes were the first time to apply the cold - strip steel surface defect withdraws 并在非参数高斯背景模型相减算法中分别利用了图像梯度差非参数高斯背景模型相减算法和图像帧间差非参数高斯背景模型相减算法提取冷轧带钢表面缺陷。
