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线推扫式高光谱相机侧扫成像几何校正 期刊论文
2016, 2016
王书民; 张爱武; 胡少兴; 孙卫东; 孟宪刚; 赵文吉; Wang Shumin; Zhang Aiwu; Hu Shaoxing; Sun Weidong; Meng Xiangang; Zhao Wenji
收藏  |  浏览/下载:4/0
A GENERAL METHOD OF GENERATING SATELLITE EPIPOLAR IMAGES BASED ON RPC MODEL 会议论文
作者:  Zhang, Guo;  Pan, Hongbo;  Chen, Tan
收藏  |  浏览/下载:2/0  |  提交时间:2019/12/05
Autofocusing technique based on image processing for remote-sensing camera (EI CONFERENCE) 会议论文
International Symposium on Photoelectronic Detection and Imaging 2007 - Image Processing, September 9, 2007 - September 12, 2007, Beijing, China
Wang X.; Sun R.-C.; Xu S.-Y.
收藏  |  浏览/下载:14/0  |  提交时间:2013/03/25
The key to the auto-focusing technique based on image processing is the selection of focus measure reflecting image definition. Usually the measures derived are on the premise of the images acquired with the same scene. As for the remote-sensing camera working in linear CCD push-broom imaging mode  the premise doesn't exist because the scenes shot are different at any moment  which brings about difficulties to the selection of the focus measure. To evaluate the image definition  the focus measure based on blur estimation for rough adjustment is proposed to estimate the focused position by only two different lens positions  which greatly saves the auto-focusing time. Another evaluation function based on edge sharpness is developed to find best imaging position in the narrow range. Simulations show that the combination of the two measures has the advantages of rapid reaction and high accuracy.  


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