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An algorithm of rapid extraction star point and diffuse plaque in star image

2014; SPIE; Volume: 9142; Linguagem: Inglês

10.1117/12.2057669

1996-756X

Shuai Wang, Yingchun Li, Lin Du, Youchen Fan,

Target Tracking and Data Fusion in Sensor Networks

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.