中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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Improvement of image deblurring for opto-electronic joint transform correlator under projective motion vector estimation 期刊论文  OAI收割
optics communications, 2014, 卷号: 321, 页码: 189-194
作者:  
收藏  |  浏览/下载:32/0  |  提交时间:2015/03/17
Real-time restoration for motion-blurred color images by multichannel combination processing (EI CONFERENCE) 会议论文  OAI收割
1st International Workshop on Education Technology and Computer Science, ETCS 2009, March 7, 2009 - March 8, 2009, Wuhan, Hubei, China
作者:  
Sun H.;  Sun H.;  Li S.
收藏  |  浏览/下载:50/0  |  提交时间:2013/03/25
A fast algorithm is proposed to restore the color images  degraded in a deterministic way by motion- blurred  by multichannel combination processing. Based on the color space conversion model  the point spread functions of the image motion on each plane of YUV422 image can be achieved. The U  V plane of YUV422 images are combined to form a new UV plane which has the same size as Y plane. Then  the Y  UV plane are packed into a two dimensional complex array which can be transformed directly by FFT and result a composite frequency spectrum. Wiener filter is applied to filter Y  UV spectrums separated from the composite spectra. On Graphics Processing Unit (GPU) platform  the proposed algorithm can restore a 1024x1024 24-bit motion-blurred color image in 7.95ms  and the PSNR of the restored image is 27.12 which reveals a good restoration performance. 2009 IEEE.  
Approaches to convergence enhancement of multiframe blind deconvolution of astronomical images 期刊论文  OAI收割
ACTA PHYSICA SINICA, 2006, 卷号: 55, 期号: 12, 页码: 6708-6714
作者:  
Luo Lin;  Wang Li;  Cheng Wei-Dong;  Shen Mang-Zuo
收藏  |  浏览/下载:34/0  |  提交时间:2015/09/21
Restoration of moving blurred image based on TMS320C6416 (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
作者:  
Liu W.
收藏  |  浏览/下载:45/0  |  提交时间:2013/03/25
To absolve image blur caused by camera's high speed  fixed-point DSP TMS320C6416 and wiener filtering algorithm are adopted to stabilize image. On the premise that cameras have uniform motion  restoration model for moving blurred image was researched  the principle of Wiener filtering is explained  the key technologies of moving blurred image restoration with TMS320C6416 are introduced: how to complete FFT calculation of 32bit and how to exert DMA function of DSP to enhance processing speed  ring effect and ghost effect in restored image are explained  and how the parameter of wiener filter affects ring effect and ghost effect is discussed  in addition to this  other reasons of ring effect and ghost effect are analyzed detailed. Experiments shows that One TMS320C6416 chip can restore seven frames per second  there is great hope to realize real-time restoration if adopting multi-DSP or the FFT completion by hardware.