Chinese Journal of Tissue Engineering Research ›› 2010, Vol. 14 ›› Issue (48): 8933-8936.doi: 10.3969/j.issn.1673-8225.2010.48.002

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An image compression and coding system for visual cortex prosthesis

Zheng Xiao-lin1, Zhao Can1, Hou Wen-sheng1, Yin Zheng-qin2   

  1. 1 Bioengineering College of Chongqing University, Chongqing  400044, China; 2 Department of Ophthalmology, Third Military Medical University of Chinese PLA, Chongqing  400038, China
  • Online:2010-11-26 Published:2010-11-26
  • Contact: Zhao Can, Bioengineering College of Chongqing University, Chongqing 400044, China zhaocan05@163.com
  • About author:Zheng Xiao-lin☆, Doctor, Professor, Doctoral supervisor, Bioengineering College of Chongqing University, Chongqing 400044, China 20071902111@cqu.edu.cn

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Abstract:

BACKGROUND: At present, the visual cortex prostheses have become a way to restore the vision. Image compression plays an important role in the pre-image processing of visual cortex prostheses.
OBJECTIVE: To discuss methods for the image information compression from spatial and brightness.
METHODS: Haar wavelets were selected to compress spatial resolution and the mutiscale wavelet transforms were used to extract spatial frequency signal from the original image appropriately to achieve further compression of image information. In addition, non-uniform compression model was established in the spatial resolution. It makes image processing closer to the visual processing. Then, the brightness information was compressed and encoded by the system to achieve the final compression.
RESULTS AND CONCLUSION: Digital signal processor-based pre-image compression and coding system were constructed, and image information expression in 10*10 bitmap array was achieved.

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