Lossless Compression for 3-D MRI Data Using Reversible KLT

摘要：

This paper presents a simple but efficient framewor k for losslessly compressing a sequence of magnetic res onance imaging (MRI) data which can be considered as3-dimensional signals. All MRI slices are first decorrel ated using the reversible Karhunen loeve transform (KLT)resulting in KLT slices which are meaningful for exploi ting their spatial correlation. Spatial redundancy of eac h KLT slice is exploited by simply applying any lossless image coder. To further reduce computational complexi ty for calculating the KLT matrices when the number of slices is high, sub-optimal approximation of the reversibl e KLT is employed instead of ordinary reversible KLT. Si mulation results show that compressing MRI data using our proposed coder improves coding performance by ov er 40%.

作者: Yodchanan Wongsawat

作者单位: Department of Biomedical Engineering, Mahidol University, 25/25 Phuttamonthon Sai4 Rd., Salaya, Nakhonpathom 73170, Thailand

会议类型: 国际会议

会议名称: 2008 International Conference on Audio，Language and Image Processing(2008国际声音、语言、图像过程大会)

会议地点: 镇江

会议语种:英文

页码: 1560-1564

在线出版日期: 2008-07-07（万方平台首次上网日期，不代表论文的发表时间）