基于DSP的图像压缩系统  

Image compression system based on DSP

作　　者：程林[1] 徐晔[1] 郑正奇[1] 

机构地区：[1]华东师范大学信息学院,上海200062

出　　处：《电子测量技术》2007年第2期151-154,175,共5页Electronic Measurement Technology

摘　　要：本文介绍了传统的JPEG图像压缩的原理以及TMS320VC5409 DSP芯片应用于图像压缩系统的可行性方案和系统的硬件方案,重点描述了一个基于TMS320VC5409 DSP芯片的图像压缩系统。该系统利用DSP芯片的特点,对传统的JPEG算法的DCT变换和量化过程作了一些改进,使本系统的压缩算法比传统的JPEG压缩速度更快,并且在压缩率相同的情况下图像的质量也更高。The article summarizes the theory of standard image compression, especially focuses on the feasibility and method that TMS320VC5409 is used in the image compression system, What＇s more, based on the image compression system, a fast DCT image compression method and an adaptive JPEG quantification way are proposed in terms of the attribute of the TMS320VC5409 DSP chip. The realization and application of the image compression system shows the proposed method runs faster and gets higher quality of image than the standard JPEG compression method at the same compression rate.

关 键 词：图像压缩 DSP JPEG算法 快速DCT变换 

分 类 号：TN919.8[电子电信—通信与信息系统]