光学精密工程2011，Vol.19Issue(10)：2526-2532,7.DOI:10.3788/OPE.20111910.2526
天文观测CCD相机中Smear效应的消除
Smear removal of CCD camera in astronomic observation
摘要
Abstract
On the basis of the mechanism of Smear effect and the image characteristics of a frame transfer CCD camera, a Smear removal algorithm which is based on the high precision background estimation is proposed. It can be applied to not only a single picture, but also sequences for imaging systems. This method firstly uses a statistic method to analyze the gray distribution of an original image to get the specific location of Smear effect automatically, then it takes Alpha-trimmed Mean Filter (ATMF) to estimate the intensity of the Smear effect exactly. Finally the difference way is used to e-liminate the Smear effect. Experimental results show that this method can effectively eliminate the single or multi-Smear effects, and can ultimately improve the image quality. The proposed method meets the requirements of astronomic observing cameras for Smear removal.关键词
天文观测CCD相机/帧转移/Smear效应/截尾均值滤波Key words
astronomical observation/CCD camera/frame transfer/Smear effect/Alpha-trimmed Mean Filter(ATMF)分类
航空航天引用本文复制引用
孙瑾秋,周军,朱宇,张臻..天文观测CCD相机中Smear效应的消除[J].光学精密工程,2011,19(10):2526-2532,7.基金项目
国家自然科学基金资助项目(No.60872145) （No.60872145）
高等学校科技创新工程重大项目培育资金资助项目(No.708085) （No.708085）
