| REMOTE SENSING IMAGE CODING METHOD COMBINING WAVELET TRANSFORM WITH CLASSIFIED VECTOR QUANTIZATION |
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| 作者姓名： | Zhang Zhengyang |
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| 作者单位： | Dept. of Information Engineering, Xidian University, Xi'an, 710071, China |
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| 基金项目： | 国家科学基金，69605002， |
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| 摘 要： | A new remote sensing image coding scheme based on the wavelet transform and classified vector quantization (CVQ) is proposed. The original image is first decomposed into a hierarchy of 3 layers including 10 subimages by DWT. The lowest frequency subimage is compressed by scalar quantization and ADPCM. The high frequency subimages are compressed by CVQ to utilize the similarity among different resolutions while improving the edge quality and reducing computational complexity. The experimental results show that the proposed scheme has a better performance than JPEG, and a PSNR of reconstructed image is 31～33 dB with a rate of 0.2 bpp.
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| 关 键 词： | remote sensing image coding wavelet transform classified vector quantization |
REMOTE SENSING IMAGE CODING METHOD COMBINING WAVELET TRANSFORM WITH CLASSIFIED VECTOR QUANTIZATION |
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| Zhang Zhengyang.REMOTE SENSING IMAGE CODING METHOD COMBINING WAVELET TRANSFORM WITH CLASSIFIED VECTOR QUANTIZATION[J].Chinese Journal of Aeronautics,1998(3):214-219. |
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| Authors: | Wu Chengke |
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| Abstract: | |
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| Keywords: | remote sensing image coding wavelet transform classified vector quantization |
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