Use of Mathematic Morphological Operators for Processing the Smeared Images of A Camera without Shutter |
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Authors: | SUN Rong-yu ZHAO Chang-yin PING Yi-ding XIONG Jian-ning ZHANG Chen |
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Institution: | 1. Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008;2. Key Laboratory of Space Object and Debris Observation, Chinese Academy of Sciences, Nanjing 210008;3. Graduate University of Chinese Academy of Sciences, Beijing 100049 |
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Abstract: | In the observation of space objects with a full-frame transfer CCD camera, the camera shutter is often removed, and therefore the smeared images are produced, which affect seriously the object detection and location. Based on the difference of geometrical morphology between star images and smears, a mathematical morphology method is proposed to process the smeared images. By comparing the position accuracies of stars and space objects before and after processing, it is veri?ed that the morphological method can effectively remove the smears from astronomical images, and can signi?cantly improve the detection rates and position accuracies of stars and moving objects. The result indicates that this is an effective method to eliminate the smearing effect. |
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Keywords: | space vehicles&mdash technique: image processing |
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