A new method for detecting small and dim targets in starry background

Rui Yao, Yanning Zhang, Lei Jiang

科研成果: 书/报告/会议事项章节会议稿件同行评审

2 引用 (Scopus)

摘要

Small visible optical space targets detection is one of the key issues in the research of long-range early warning and space debris surveillance. The SNR(Signal to Noise Ratio) of the target is very low because of the self influence of image device. Random noise and background movement also increase the difficulty of target detection. In order to detect small visible optical space targets effectively and rapidly, we bring up a novel detecting method based on statistic theory. Firstly, we get a reasonable statistical model of visible optical space image. Secondly, we extract SIFT(Scale-Invariant Feature Transform) feature of the image frames, and calculate the transform relationship, then use the transform relationship to compensate whole visual field's movement. Thirdly, the influence of star was wiped off by using interframe difference method. We find segmentation threshold to differentiate candidate targets and noise by using OTSU method. Finally, we calculate statistical quantity to judge whether there is the target for every pixel position in the image. Theory analysis shows the relationship of false alarm probability and detection probability at different SNR. The experiment result shows that this method could detect target efficiently, even the target passing through stars.

源语言英语
主期刊名International Symposium on Photoelectronic Detection and Imaging 2011
主期刊副标题Space Exploration Technologies and Applications
DOI
出版状态已出版 - 2011
活动International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications - Beijing, 中国
期限: 24 5月 201126 5月 2011

出版系列

姓名Proceedings of SPIE - The International Society for Optical Engineering
8196
ISSN(印刷版)0277-786X

会议

会议International Symposium on Photoelectronic Detection and Imaging 2011: Space Exploration Technologies and Applications
国家/地区中国
Beijing
时期24/05/1126/05/11

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