| 基于S3C2440A的JPEG XR图像采集研究与实现 |
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| 引用本文： | 陈自刚. 基于S3C2440A的JPEG XR图像采集研究与实现[J]. 南阳理工学院学报, 2011, 3(6): 11-14 |
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| 作者姓名： | 陈自刚 |
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| 作者单位： | 南阳理工学院计算机与信息工程学院,河南南阳,473004 |
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| 基金项目： | 河南省科技攻关计划项目(102102210434);河南省教育厅自然科学基础研究计划项目(2009C520004,2010C520006,2010B520020) |
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| 摘 要： | 构建基于S3C2440A的JPEG XR图像采集系统,实现对采集的RGB24格式原图进行编码并存储.根据S3C2440A自身的体系结构特征,系统设定S3C2440A工作在ARM状态,采用32位总线宽度和32位小端方式的存储空间格式,还给出数据块定义和存储空间分配方案,并进行基于S3C2440A的汇编级优化.内部图像为YUV4:4:4格式,码流结构采用频率模式,对编解码代码定制.最终将定制并优化的JPEC,XR编码代码交叉编译为32位ARM指令代码,移植到S3C2440A上,实现JPEG XR图像采集并进行测试.
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| 关 键 词： | JPEG XR S3C2440A 图像采集 定制 移植 |
RESEARCH AND REALIZATION OF JPEG XR IMAGE ACQUISITION BASED ON S3C2440A |
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| CHEN Zi-gang. RESEARCH AND REALIZATION OF JPEG XR IMAGE ACQUISITION BASED ON S3C2440A[J]. Journal of Nanyang Institute of Technology, 2011, 3(6): 11-14 |
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| Authors: | CHEN Zi-gang |
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| Affiliation: | CHEN Zi-gang(School of Computer and Information Engineering,Nanyang Institute of Technology,Nanyang 473004,China) |
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| Abstract: | Building image acquisition system of JPEG XR based on S3C2440A,the original RGB24 format image as JPEG XR code stream is encoded and stored.According to S3C2440A characteristics,the system sets S3C2440A work in ARM state and adopts bus width of 32-bit and storage space of 32-bit little-endian mode,gives the data block definition and allocation scheme of storage space,and optimizes with the assembly-level based S3C2440A.The internal image is YUV4：4：4 format,and code stream structure adopts the frequency mode,to customize the codec code.Finial JPEG XR code of customized and optimized are compiled as the 32-bit ARM code by cross-compiler,then which are ported into the S3C2440A,to realize acquisition of JPEG XR image and test. |
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| Keywords: | JPEG XR S3C2440A image acquisition customize porting |
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