| VDR图像自适应压缩算法的研究* |
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| 引用本文： | 李哲林,盛玉柱,姜立军,王海平,熊志勇.VDR图像自适应压缩算法的研究*[J].计算机应用研究,2009,26(8):3192-3194. |
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| 作者姓名： | 李哲林 盛玉柱 姜立军 王海平 熊志勇 |
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| 作者单位： | 1. 华南理工大学,机械与汽车工程学院,广州,510640
2. 海华电子企业,中国,有限公司,广州,510656 |
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| 基金项目： | 广东省教育部产学研结合项目（2007B090400028） |
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| 摘 要： | 针对船载航行数据记录仪（VDR）中对雷达图像压缩的要求，分析图像的灰度丰富度、平滑度特征，建立了图像灰度丰富度、压缩比和压缩质量的关系及平滑度、压缩比和压缩质量之间的数学模型。提出以图像的灰度丰富度指标来自适应选择ZIP压缩或JPEG压缩算法以便获得最优的基本算法，并提出以图像的灰度平滑度来自适应确定JPEG压缩算法的压缩质量参数以便获得恒定的压缩比，实现了VDR图像的自适应优化压缩。
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| 关 键 词： | 图像压缩 灰度丰富度 灰度平滑度 航行数据记录仪 |
Adaptive image compression algorithm for voyage data recorders |
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| LI Zhe-lin,SHENG Yu-zhu,JIANG Li-jun,WANG Hai-ping,XIONG Zhi-yong.Adaptive image compression algorithm for voyage data recorders[J].Application Research of Computers,2009,26(8):3192-3194. |
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| Authors: | LI Zhe-lin SHENG Yu-zhu JIANG Li-jun WANG Hai-ping XIONG Zhi-yong |
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| Affiliation: | (1.School of Mechanical & Automobile Engineering, South China University of Technology, Guangzhou 510640, China; 2. Haihua Electronics Enterprise (China) Corporation, Guangzhou 510656, China) |
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| Abstract: | In accordance with the requirement of image compression for voyage data recorder(VDR), this paper analyzed the gray richness and smoothness of image firstly. Then constructed the relationship and the mathematics model among the gray richness, the gray smoothness, compression rate and compression quality based on the characteristic of ZIP and JPEG compression arithmetic. Presented the essential compression algorithm that could be selected based on the gray richness. The compress quality parameter could be obtained according to the gray smoothness in order to get the fixation compression rate. This algorithm can compress the VDR images self-adaptivly well. |
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| Keywords: | image compression gray richness gray smoothness voyage data recorder(VDR) |
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