Smear removal of CCD camera in astronomic observation

SUN Jin-qiu; ZHOU Jun; ZHU Yu; ZHANG Zhen

doi:10.3788/OPE.20111910.2526

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Smear removal of CCD camera in astronomic observation

Article | 更新时间：2020-08-12

- Smear removal of CCD camera in astronomic observation
- Optics and Precision Engineering Vol. 19, Issue 10, Pages: 2526-2532(2011)
- 作者机构：
  
  1. 西北工业大学精确制导与控制研究所,陕西西安,710072
  2. 西北工业大学计算机学院,陕西西安,710129
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111910.2526
  CLC： V447.3;TN386.5
- Received：11 January 2011，
  
  Revised：27 February 2011，
  
  Published Online：27 October 2011，
  
  Published：25 October 2011
- 稿件说明：
移动端阅览
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

SUN Jin-qiu, ZHOU Jun, ZHU Yu, ZHANG Zhen. Smear removal of CCD camera in astronomic observation[J]. Editorial Office of Optics and Precision Engineering, 2011,19(10): 2526-2532
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 DOI： 10.3788/OPE.20111910.2526.

SUN Jin-qiu, ZHOU Jun, ZHU Yu, ZHANG Zhen. Smear removal of CCD camera in astronomic observation[J]. Editorial Office of Optics and Precision Engineering, 2011,19(10): 2526-2532 DOI： 10.3788/OPE.20111910.2526.

摘要

为了有效消除帧转移型相机的Smear效应

针对其成像机理及特性

提出了一种基于背景估计的适用于序列图像中Smear效应的消除方法。该方法通过对含有Smear效应的原始图像灰度分布进行统计分析

自适应判定Smear效应的发生位置;然后

采用截尾均值滤波(ATMF)技术高精度估计Smear效应的强度;最后

通过差分的方式消除Smear效应。实验结果表明

该方法在有效保留弱小目标和背景信息的基础上

可较好地消除图像中的单个或多个Smear效应

提高了图像的视觉质量

基本满足天文观测相机的观测要求。

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 eliminate 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.

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references

Kao WenChung，Hong ChinMing，Lin ShengYuan.Automatic sensor and mechanical shutter calibration for digital still cameras[J].IEEE Transactions on Consumer Electronics，Vol.51，No. 4，Nov,2005,51(4):1060-1066[2]韩昌元.高分辨力空间相机的光学系统研究[J].光学精密工程,2008,16(11):2164-2171[3]李同海，张德联，赵新亮.行间转移型CCD相机的Smear现象研究[J].科学技术与工程,2008,8(14):3924-3927[4]韩采芹，柳忠彬，.科学级帧转移型CCD相机拖影问题的处理[J].科学技术与工程,2009,9(15):4336-4339[5]王海涌，申功勋.基于电子快门实现CCD曝光量无级调节技术[J].光电工程,2006,33(8):136-139[6]Y.Toshihico，K.Kazuyuki，.Digital camera comprising smear removal function[J].U.S. Patent 123828,2006,:-[7]Young Seok Han,Euncheol Choi，Moon Gi Kang.Smear Removal Algorithm Using the Optical Black Region for CCD Imaging Sensors[J].IEEE Transactions on Consumer Electronics,2009,55(4):2287-2293[8] 米本和也著，陈蓉庭等译.CCD/CMOS图像传感器的基础与应用[J].北京科学出版社,2006,:-[9]David Down.Image smear noise in CCDs[J].Proceedings of SPIE，Spaceborne Sensors III,2006,6220:1-38

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