| 基于DCT的电网金属材料金相压缩算法 |
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| 引用本文： | 董重里,吴开源,赵卓立,李华佳.基于DCT的电网金属材料金相压缩算法[J].新技术新工艺,2012(11):41-43. |
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| 作者姓名： | 董重里 吴开源 赵卓立 李华佳 |
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| 作者单位： | 1. 广东电网公司电力科学研究院,广东广州,510080
2. 华南理工大学机械与汽车工程学院,广东广州,510640 |
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| 摘 要： | 为了实现对电网金属材料的定量金相分析，加快存储和传输电网金属材料金相显微组织图像的速度，对基于离散余弦变换（DCT）的JPEG图像压缩算法进行了研究。采用基于DCT的JPEG图像压缩算法，以MATLAB图像处理工具箱为软件平台对系统进行试验。试验结果表明，所设计的压缩算法满足定量金相分析图像压缩的设计要求，既可保证有较高的压缩比，又可保证较好的图像质量，大大提高了图像压缩的效率，实现了电网金属材料金相显微组织图像数据的压缩。
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| 关 键 词： | 图像压缩 DCT变换 电网金属材料 金相组织 |
Compression Algorithm of Microstructures in Power Grid Metal Materials Based on DCT |
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| DONG Chongli
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WU Kaiyuan
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ZHAO Zhuoli
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LI Huajia.Compression Algorithm of Microstructures in Power Grid Metal Materials Based on DCT[J].New Technology & New Process,2012(11):41-43. |
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| Authors: | DONG Chongli WU Kaiyuan ZHAO Zhuoli LI Huajia |
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| Affiliation: | 1.Electric Power Research Institute,Guangdong Power Grid Corporation,Guangzhou 510080,China; 2.School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China) |
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| Abstract: | In order to realize the quantitative rnetallography of power grid metal materials and improve the storage and transmission speed of metallurgical structure image in power grid metal materials, the JPEG image compression algorithm based on discrete cosine transform （D CT） was developed. In the algorithm, a JPEG image compression algorithm was adopted, which was experimented on MATLAB image processing toolbox. The results of the experiment demonstrated that the developed compression algorithm can guarantee higher compression ratio, and good image quality, thus greatly improve the efficiency of image compression, and the compression of metallurgical structure image in power grid metal materials was realized. |
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| Keywords: | Image compression D CT transform Power grid metal materials Metallurgical structure |
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