21 February 2014 An algorithm of rapid extraction star point and diffuse plaque in star image
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Abstract
In order to solve the low speed and low accuracy in exacting star point which used in starlight star point navigation, this paper presents an algorithm to quickly extract the coordinates of the Navistar in the image. First of all, this algorithm extracts the coordinates of star point with a low accuracy, then extracting its diffuse plaque, in the final, get its exact coordinates. Which can reduce the amount of computation to improve navigation extraction rate while avoid the time-domain filtering of the star point of the outline and diffuse spots of gray value, solving low speed in the sky diffuse plaques star point image extraction. The experiments show that this algorithm can extract the star point while making dark star and background noise greatly reduced. At the same time, star point and diffuse plaque contour gray value can be consistent with the original image.
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Shuai Wang, Yingchun Li, Lin Du, Youchen Fan, "An algorithm of rapid extraction star point and diffuse plaque in star image", Proc. SPIE 9142, Selected Papers from Conferences of the Photoelectronic Technology Committee of the Chinese Society of Astronautics: Optical Imaging, Remote Sensing, and Laser-Matter Interaction 2013, 914215 (21 February 2014); doi: 10.1117/12.2057669; https://doi.org/10.1117/12.2057669
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