THREE DIMENSIONAL DISCRETE WAVELET TRANSFORM WITH DEDUCED NUMBER OF LIFTING STEPS

被引：0
|
作者：
Iwahashi, Masahiro [1 ]
Orachon, Teerapong [1 ]
Kiya, Hitoshi [2 ]
机构：
[1] Nagaoka Univ Technol, Niigata 9802188, Japan
[2] Tokyo Metropolitan Univ, Tokyo 1910065, Japan
来源：
2013 20TH IEEE INTERNATIONAL CONFERENCE ON IMAGE PROCESSING (ICIP 2013) | 2013年
关键词：
wavelet; 3D; coding; medical;
D O I：
暂无
中图分类号：
TB8 [摄影技术];
学科分类号：
0804 ;
摘要：
This report reduces the total number of lifting steps in a three-dimensional (3D) double lifting discrete wavelet transform (DWT), which has been widely applied for analyzing volumetric medical images. The lifting steps are necessary components in a DWT. Since calculation in a lifting step must wait for a result of former step, cascading many lifting steps brings about increase of delay from input to output. We decrease the total number of lifting steps introducing 3D memory accessing for the implementation of low delay 3D DWT. We also maintain compatibility with the conventional 5/3 DWT defined by JPEG 2000 international standard for utilization of its software and hardware resources. Finally, the total number of lifting steps and rounding operations were reduced to 67 % and 33 %, respectively. It was observed that total amount of errors due to rounding operations in the lifting steps was also reduced.
引用
收藏
页码：1651 / 1654
页数：4
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