ADAPTIVE APPROACH TO EDGE-DETECTION

被引：16

作者：

SUNDARAM, R ^{[1
]}

ERSOY, OK ^{[1
]}

HANSEN, D ^{[1
]}

机构：

[1] PURDUE UNIV,SCH VET MED,W LAFAYETTE,IN 47907

来源：

OPTICAL ENGINEERING | 1995年 / 34卷 / 11期

关键词：

EDGE DETECTION; TRANSFORM DOMAIN; BANDPASS FILTERING; DISCRETE SYMMETRICAL COSINE TRANSFORM (DSCT);

D O I：

10.1117/12.212895

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

An adaptive approach to edge detection using the transform domain and bandpass filtering is discussed. The method is also extended to 3-D and shown to yield better edge maps. The discrete symmetric cosine transform (DSCT) is shown to be the best transform for accurate edge detection. The theory is first discussed in 1-D. Then, the adaptive algorithm utilizing both the gradient and the Laplacian information is developed in 2-D and 3-D. Computer simulations with regular scenes and magnetic resonance imaging images are provided. The extension of the method to 3-D leads to improved noise immunity and better edge contours.

引用

收藏

页码：3271 / 3276

页数：6

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