Volume 5 Issue 2
Apr.  2012
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YANG Li-hong, ZHAO Bian-hong, ZHANG Xing-xiang, REN Jian-yue. Gaussian fitted estimation of point spread function and remote sensing image restoration[J]. Chinese Optics, 2012, 5(2): 181-188. doi: 10.3788/CO.20120502.0181
Citation: YANG Li-hong, ZHAO Bian-hong, ZHANG Xing-xiang, REN Jian-yue. Gaussian fitted estimation of point spread function and remote sensing image restoration[J]. Chinese Optics, 2012, 5(2): 181-188. doi: 10.3788/CO.20120502.0181

Gaussian fitted estimation of point spread function and remote sensing image restoration

doi: 10.3788/CO.20120502.0181
  • Received Date: 21 Nov 2011
  • Rev Recd Date: 23 Jan 2012
  • Publish Date: 10 Apr 2012
  • In order to reduce or eliminate the image blur caused by the degradation in imaging process of a space remote sensing camera, the acquired images were restored to enhance the characteristic objects of images. First, a frequency-domain notch filter was adopted to remove noises in the remote sensing images. Then, the degradation function, namely, Point Spread Function(PSF) of the imaging system was estimated by ground characters with the knife-edge shape, and the estimated PSF was corrected with Gaussian fitting. Finally, the images were restored by using adaptive Wiener filtering with the fitted PSF. Experimental results show that almost all strip noises in the image are eliminated. After the denoised image is restored, its variance and gray mean gradient increase by 4.395 and 1.799, respectively, and also Laplacian gradient increases by 10.014. Experiments demonstrate that the restoration with Gaussian fitted PSF is beneficial to interpreting and analyzing the remote sensing images. After restoration, the blur phenomenon of the images is reduced, the characters are highlighted, and the visual effects of the images are clearer.

     

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  • [1] 许元男,赵元,刘丽萍,等. 含噪声模糊图像的点扩展函数参数辨识[J]. 光学 精密工程,2009,17(11):2849-2856. XU Y N,ZHAO Y,LIU L P,et al.. Parameter identification of point spread function in noisy and blur images[J]. Opt. Precision Eng.,2009,17(11):2849-2856.(in Chinese) [2] 郭永彩,王婀娜,高潮. 空间自适应和正则化技术的盲图像复原[J]. 光学 精密工程,2008,16(11):2263-2267. GUO Y C,WANG E N,GAO CH. Blind image restoration algorithm based on space-adaptive and regularization[J]. Opt. Precision Eng.,2008,16(11):2263-2267.(in Chinese) [3] 江洁,邓琼,张广军. 基于小波变换的正则化盲图像复原算法[J]. 光学 精密工程,2007,15(4):582-586. JIANG J,DENG Q,ZHANG G J. Regularization algorithm for blind image restoration based on wavelet transform[J]. Opt. Precision Eng.,2007,15(4):582-586.(in Chinese) [4] 顾行发,李小英,闵祥军,等. CBERS-02卫星CCD相机MTF在轨测量及图像MTF补偿[J]. 中国科学E辑 信息科学,2005,35:26-40. GU H F,LI X Y,MIN X J,et al.. On-orbit MTF Estimation and MTF compensation of CCD camera in CBERS-02 satellite[J]. Science in China, Series E Information Sciences,2005,35:26-40.(in Chinese) [5] 陈强,戴奇燕,夏德深. 基于MTF理论的遥感图像复原[J]. 中国图像图形学报,2006,11(9):1299-1305. CHEN Q,DAI Q Y,XIA D SH. Restoration of remote sensing images based on MTF theory[J]. J. Image and Graphics,2006,11(9):1299-1305.(in Chinese) [6] 张朋,刘团结,王宏琦. 线阵CCD相机MTF的系统模型估计法与图像复原[J]. 光学技术,2009,35(3):394-398. ZHANG P,LIU T J,WANG H Q. MTF estimation based on system modal for linear CCD camera and image recovery[J]. Opt. Technique,2009,35(3):394-398.(in Chinese) [7] GONZALEZ R C,WOODS R E. 数字图像处理 [M].2版.北京:电子工业出版社,2007. GONZALEZ R C,WOODS R E. Digital Image Processing[M]. 2nd ed. Beijing:Publishing House of Electronics Industry,2007.(in Chinese) [8] GONZALEZ R C,WOODS R E,EDDINS S L. 数字图像处理:MATLAB版 [M].北京:电子工业出版社,2005. GONZALEZ R C,WOODS R E,EDDINS S L. Digital Image Processing Using MATLAB[M]. Beijing:Publishing House of Electronics Industry,2005.(in Chinese) [9] BENSEBAA K,BANON G J F,FONSECA L M G. On-orbit spatial resolution estimation of CBERS-1 CCD system from bridge images. Proceedings of the XXth International Society for Photogrammetry and Remote Sensing(ISPRS),Istanbul,Turkey,July 2004:36-41. [10] CHOI T. IKONOS satellite on orbit Modulation Transfer Function(MTF) measurement using edge and pulse method. Brookings:South Dakota State University,2002. [11] 周松涛,宣家斌. 基于景物灰度分布特征的影像恢复技术[J]. 武汉测绘科技大学学报,1999,24(3):230-234,239. ZHOU S T,XUAN J B. Restoration technique based on image features[J]. J. Wuhan Technical University of Surveying and Mapping,1999,24(3):230-234,239.(in Chinese)
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