Shuyan Xu

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In order to correct the geocentric distance's error of TDI (Time Delay and Integration) CCD space camera in calculation of image motion compensation, and eliminate the influence to the relative error of image motion velocity, a model of image motion calculation of nadir has been introduced, and the influence of the geocentric distance error to the relative(More)
—We present a color transfer method, which is designed to give fused multiband nighttime imagery a natural daytime color appearance in a simple and efficient way. Instead of using traditional nonlinear lĮȕ space, the proposed method transfers the color distribution of the target image (daylight color image) to the source image (fused multiband nighttime(More)
A Strategy of Real-Time Adjusting of Yaw Angle (SRTAYA) of space camera was proposed base on General Image-Quality Equation (GIQE). During space camera imaging, yaw angle which is caused by rotation of the earth and the gesture changing of satellite impacts integral aspect of TDI (Time Delay and Integration) CCD (Charge Couple Device), so that the image(More)
The misalignment between recorded in-focus and out-of-focus images using the Phase Diversity (PD) algorithm leads to a dramatic decline in wavefront detection accuracy and image recovery quality for segmented active optics systems. This paper demonstrates the theoretical relationship between the image misalignment and tip-tilt terms in Zernike polynomials(More)
Classic graphplan has too much restriction on capturing the full subtlety of many real problems. Flexible graphplan is defined which supports the soft constraints often found in reality. Heuristic concept is introduced to the process of plan extraction in flexible graphplan in order to improve the efficiency of plan extraction and the quality of plan. A(More)
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