A Compression Algorithm for Multi-Spectral TDICCD Image
LIU Yan-yan1, 3, GAO Yin-han2, LI Jin4, JIN Long-xu4, HAN Shuang-li4, LI Guo-ning4
1. College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China 2. State Key Laboratory of Automobile Simulation and Control, Jilin University, Changchun 130022, China 3. School of Electronic and Information Engineering, Changchun University of Science and Technology, Changchun 130022, China 4. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
Abstract：In order to solve the problem of edge and texture blurring of multi-spectral image caused by the wavelet transform and bit-plane encoder of traditional method not taking into account image characteristics, a compression algorithm of multi-spectral TDICCD image having few bands is proposed in the present paper. The proposed direction-adaptive lifting DWT can adaptively choose the best lifting direction and use the Lagrange interpolation technique to make prediction according to its local characteristics. This method makes good use of the image texture features. The proposed rate control algorithm can adaptively allocate the rate bits according to image content. The experiments results showed that the proposed compression algorithm has good compressive property. Compared with traditional approaches, the performance of our method corresponds to the conventional approach for smooth images. However, it was superior to others for images with rich texture and a large number of edge detail information. In the compression ration 4∶1, the average peak signal to noise ratio of the proposed compression algorithm could improve the average PSNR by 1.939 dB. They effectively protect the edge and texture detail information for multi-spectral image. It is very suitable for the application of space multi-spectral CCD image with rich texture and a large number of edge detail information.
刘妍妍1, 3，高印寒2，李 进4，金龙旭4，韩双丽4，李国宁4 . 一种适于空间多光谱TDICCD图像压缩算法 [J]. 光谱学与光谱分析, 2013, 33(03): 844-849.
LIU Yan-yan1, 3, GAO Yin-han2, LI Jin4, JIN Long-xu4, HAN Shuang-li4, LI Guo-ning4 . A Compression Algorithm for Multi-Spectral TDICCD Image . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2013, 33(03): 844-849.
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