| 适用于低压缩比环境的高效率图像压缩算法 |
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| 引用本文： | 桑军,胡海波,向宏,蔡斌,傅鹂.适用于低压缩比环境的高效率图像压缩算法[J].计算机工程与应用,2008,44(17):166-168. |
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| 作者姓名： | 桑军 胡海波 向宏 蔡斌 傅鹂 |
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| 作者单位： | 重庆大学 软件学院，重庆 400044 |
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| 摘 要： | 静态图像压缩算法国际标准JPEG目前已广为应用，但其作为通用静态图像压缩算法，实现方法较为复杂，在某些场合并不适用。在深入分析JPEG压缩原理的基础上，通过改进JPEG算法的量化与编码模块，提出了一种基于离散余弦变换（DCT）的简单压缩算法。该算法在低压缩比（压缩比小于15）环境下具有很好的压缩效果，而实现方法却比JPEG简单许多。
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| 关 键 词： | 图像压缩 DCT变换 量化 编码 低压缩比 |
| 收稿时间： | 2008-1-29 |
| 修稿时间： | 2008-3-17
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Efficient image compression algorithm for low compression ratio applications |
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| SANG Jun,HU Hai-bo,XIANG Hong,CAI Bin,FU Li.Efficient image compression algorithm for low compression ratio applications[J].Computer Engineering and Applications,2008,44(17):166-168. |
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| Authors: | SANG Jun HU Hai-bo XIANG Hong CAI Bin FU Li |
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| Affiliation: | School of Software Engineering，Chongqing University，Chongqing 400044，China |
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| Abstract: | JPEG has been widely used so far.As a generic compression algorithm for the static images,JPEG is too complex to be suitable under some circumstances.Based on the analysis of the principles of JPEG,by improving the quantization module and the coding module of JPEG,a simple compression algorithm based on discrete Cosine Transform(DCT) is proposed.The proposed algorithm shows good compression performance for low compression ratio applications,the compression ratio is lower than 15,while it is much simpler than JPEG. |
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| Keywords: | image compression DCT transform quantization coding low compression ratio |
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