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For features of synchronous orbit target image, this paper proposes the small target detection method that based on Normalized moment of inertia feature. Firstly, this method uses gray mathematical morphological filter to pre-process the image, improves the target signal noise ratio without affecting the target shape, and then uses constant false alarm rate (CFAR) to choose segmentation threshold...
For inter-frame motion characteristics of slowly moving small target, this paper is proposed a target detection algorithm based on relevant frames. This method use improved spatial high-pass filter for image pre-processing to improve signal to noise ratio of small targets; extract candidate target point by binary segmentation, and then conduct inter-frame correlation to binary image. Correlation is...
The Structure and imaging process of frame-transfer CCD is analyzed, Finding the image smearing is because of photosensitive unit is still exposure when image transferred line-by-line, The image subsequent lines will influent by previous lines inevitable, once there is a highlight area in image, which will generate serious image smearing. In this paper, a Calibrate image smearing method is proposed,...
When optical altazimuth telescope conducting Geostationary orbit object detection, staring star and staring satellite are two ordinary work mode. This article proposes two different kinds of object detection methods based on the characteristic of object imaging of above two work mode. When staring star, symmetrical difference is presented to reduce star interference, and remaining star interference...
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