| 探空火箭图像压缩算法研究 |
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| 引用本文： | 李国庆,刘波,于世强.探空火箭图像压缩算法研究[J].空间科学学报,2012,32(2):289-297. |
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| 作者姓名： | 李国庆 刘波 于世强 |
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| 作者单位： | 1. 中国科学院空间科学与应用研究中心,北京100190／中国科学院研究生院,北京100049
2. 中国科学院空间科学与应用研究中心,北京,100190 |
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| 基金项目： | 中国科学院空间科学与应用研究中心知识创新工程青年创新项目资助 |
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| 摘 要： | 结合探空火箭图像系统需求,提出了一种基于小波变换编码,即基于MSPIHT的自适应差分算术编码(MSPIHT Adaptive Differential Arithmetic Coding for image,MADAC)的图像压缩算法.该算法对经过量化编码之后的数据进行熵编码.实验结果表明,MADAC算法具备探空火箭图像系统所要求的分辨率、帧速率及压缩率可调的功能,且易于硬件实现.
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| 关 键 词： | 探空火箭 图像压缩编码 提升小波 改进的SPIHT 自适应算术编码 差分编码 |
Research of Image Compression Algorithm for Sounding Rocket |
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| LI Guoqing,LIU Bo,YU Shiqiang.Research of Image Compression Algorithm for Sounding Rocket[J].Chinese Journal of Space Science,2012,32(2):289-297. |
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| Authors: | LI Guoqing LIU Bo YU Shiqiang |
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| Institution: | 1(Laboratory of Rocket and Balloon Sounding Technology,Center for Space Science and Applied Research, Chinese Academy of Sciences,Beijing 100190) 2(Graduate University of Chinese Academy of Sciences,Beijing 100049) |
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| Abstract: | According to the requirements of Sounding Rocket Image System,an image compression algorithm based on Discrete Wavelet Transform coding—MSPIHT Adaptive Differential Arithmetic Coding for image(MADAC),is proposed.In the algorithm,the Modified SPIHT(MSPIHT) method is used to scan and quantize the parameters of the Wavelet Transform and an adaptive differential arithmetic algorithm is designed to code the data after the quantization stage in the entropy stage. Result of experiments shows that the performance of MADAC is satisfying,and the adjustable image resolution,frame rate and compression ratio required by the Sounding Rocket Image System could be realized through MADAC.All the three stages of MADAC are easy to be implemented on hardware. |
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| Keywords: | Sounding Rocket Image compression coding Lifting wavelet Modified SPIHT Adaptive arithmetic coding Differential coding |
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