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Beamlet变换与多尺度线特征提取
引用本文:杨明,尹勇,彭玉华,周新虹. Beamlet变换与多尺度线特征提取[J]. 电子学报, 2007, 35(1): 100-103
作者姓名:杨明  尹勇  彭玉华  周新虹
作者单位:山东大学信息科学与工程学院,山东济南,250100;山东省肿瘤医院,山东济南,250117
基金项目:教育部留学人员基金,山东省自然科学基金
摘    要:beamlet变换是Donoho提出的一种多尺度分析的有效工具.本文提出一种离散beamlet变换的快速算法,利用二进方块中线段的对称、平行等性质减少了求离散beamlet基上象素点坐标的计算量.对利用复杂度惩罚能量进行多尺度线特征提取的方法做了改进,建立了二进方块最大beamlet能量的二尺度关系,并提出一种阈值化最大beamlet能量方法,避免了惩罚因子选取的困难,使线特征提取结果更清晰.

关 键 词:beamlet变换  多尺度  线特征
文章编号:0372-2112(2007)01-0100-04
收稿时间:2006-02-17
修稿时间:2006-02-172006-09-04

Beamlet Transform and Multiscale Linear Feature Extraction
YANG Ming,YIN Yong,PENG Yu-hua,ZHOU Xin-hong. Beamlet Transform and Multiscale Linear Feature Extraction[J]. Acta Electronica Sinica, 2007, 35(1): 100-103
Authors:YANG Ming  YIN Yong  PENG Yu-hua  ZHOU Xin-hong
Affiliation:1. School of Information Science and Engineering,Shandong University,Jinan,Shandong 250100,China;2. Shandong Tumor Hospital,Jinan,Shandong 250117,China
Abstract:Beamlet transform is an efficient tool presented by Donoho for multiscale analysis. A fast algorithm for discrete beamlet transform was proposed which reduced the complexity for computing the pixel coordinates on beamlets. This paper improved the complexity-penalized energy based multiscale linear features extraction method. It established the two-scale relationship of the maximal beamlet energy in the dyadic square, and presented a threshold-processed maximal beamlet energy algorithm which could avoid the problem of selecting penalty factor. Experimental results prove the efficiency of the method proposed.
Keywords:beamlet transform   multiscale   linear feature
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