| SPIHT算法在DICOM图像压缩中的应用研究 |
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| 引用本文： | 龚正,沈建新.SPIHT算法在DICOM图像压缩中的应用研究[J].计算技术与自动化,2016(2):61-65. |
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| 作者姓名： | 龚正 沈建新 |
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| 作者单位： | （南京航空航天大学 机械电子工程系，江苏 南京210016） |
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| 摘 要： | DICOM图像文件的储存和传输一直是近代医学图像处理中一个比较热门的研究话题，其中较好的解决方案就是对DICOM图像进行压缩处理。文中通过对DICOM文件的数据结构进行分析，将DICOM文件拆分成图像数据部分和文本信息部分，然后采用9/7提升小波变换对拆分出来的DICOM图像数据进行图像变换，最后对变换后的小波系数进行SPIHT编码完成DICOM图像压缩。主客观对图像的评价表明SPIHT算法在高压缩比时仍能保证图像较好的质量。该方法能够对DICOM图像的存储和传输带来便利也将产生一定的影响。
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| 关 键 词： | 医学数字图像通信协议标准 图像压缩 9/7提升小波变换 多级树集合分裂排序 |
Research on DICOM Image Compression by SPIHT Algorithm |
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| GONG Zheng,SHEN Jian-xin.Research on DICOM Image Compression by SPIHT Algorithm[J].Computing Technology and Automation,2016(2):61-65. |
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| Authors: | GONG Zheng SHEN Jian-xin |
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| Affiliation: | (Mechanical and Electronic Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing,Jiangsu210002,China) |
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| Abstract: | Storage and transmission of DICOM image files of modern medical image processing have been a more popular research topic, in which the preferred solution is DICOM image compression processing. This paper analyzed DICOM file data structure, split the file into DICOM image data portion and a portion of the text information, and then transformed DICOM image data by 9/7 lifting wavelet to get wavelet coefficients, at last coded the wavelet coefficients by SPIHT coding algorithm to complete DICOM image compression. Subjective and objective evaluation of the images show SPIHT algorithm at high compression ratio can still ensure better image quality. The method is convenient for DICOM image storage and transmission. |
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| Keywords: | DICOM image compression 9/7 lifting wavelet transform SPIHT |
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