| Bayer图像的准无损压缩方法 |
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| 引用本文： | 李晓雯,李国林. Bayer图像的准无损压缩方法[J]. 电视技术, 2005, 0(8): 24-27 |
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| 作者姓名： | 李晓雯 李国林 |
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| 作者单位： | 清华大学,电子工程系,北京,100084;清华大学,电子工程系,北京,100084 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金 |
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| 摘 要： | 介绍了准无损压缩的研究背景和3类准无损压缩方法.提出了针对Bayer格式图像的准无损压缩方法,该方法分为低通滤波预处理、JPEG-LS无损压缩、解压缩和重构4个步骤.实验表明,该方法在较高图像恢复质量情况下比标准JPEG-LS算法有更高的压缩比,而且可通过改变滤波行数实现一定范围内的PSNR可调.
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| 关 键 词： | 准无损压缩 Bayer格式 滤波 重构 |
| 文章编号： | 1002-8692(2005)08-0024-04 |
| 收稿时间： | 2005-05-17 |
| 修稿时间： | 2005-05-17 |
Near-Lossless Compression Method for Bayer Image |
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| LI Xiao-wen,LI Guo-lin. Near-Lossless Compression Method for Bayer Image[J]. Ideo Engineering, 2005, 0(8): 24-27 |
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| Authors: | LI Xiao-wen LI Guo-lin |
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| Affiliation: | Department of Electronic Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | The research background of near-lossless compression and 3 types of method are introduced in this paper. A near-lossless compression method for Bayer image is presented, which can be divided into low-pass filtering pre-processing, JPEG-LS lossless compression, decompression and reconstruction. Simulation results demonstrate that the proposed method will engender higher compression ratio for images of high recovery-quality compared to standard JPEG-LS algorithm, and it could be adjusted for PSNR in some specific range by changing the number of filtered rows. |
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| Keywords: | near-lossless compression bayer filtering reconstruction |
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