南华大学学报：自然科学版2012，Vol.26Issue(3)：58-63,6.
基于STM32F4的图像压缩技术研究
Research of Image Compression Technology Based on STM32F4
摘要
Abstract
A method of implementing the JPEG static image compression algorithmic on STM32F4 microprocessor is proposed in this paper. According to the basic process of image compression, optimization and implementation of DCT transform in the image coding and the process of image compression which based on STM32F4 microprocessor are mainly dis- cussed. Experimental results show that compared with the traditional system based on the basic DCT transform ,the proposed system based on STM32F4 microprocessor and fast DCT algorithm as long as the method of cosine coefficient querying has improved the speed of image compression by four times, and gets a higher compression ratio which can reach up to 14: 1. Moreover,the PSNR of the image is above 30, and real-time and high efficiency compression of image signal is also realized.关键词
图像压缩/JPEG/快速DCT变换/余弦系数查表法/STM32F417Key words
image compression/JPEG/fast DCT transform/cosine coefficient queryingmethod/STM3 2 F417分类
信息技术与安全科学引用本文复制引用
黄智伟,于红利,宁志刚,刘双..基于STM32F4的图像压缩技术研究[J].南华大学学报：自然科学版,2012,26(3):58-63,6.基金项目
2011年湖南省自然科学基金资助项目 （）
