Algorithms for adaptive transform edge detection

被引：12
|
作者：
Sundaram, R [1 ]
机构：
[1] Informat Syst Inc, W Lafayette, IN 47906 USA
来源：
IEEE TRANSACTIONS ON SIGNAL PROCESSING | 1999年 / 47卷 / 08期
关键词：
adaptive filters; bandpass filters; discrete transforms; level-crossing problems;
D O I：
10.1109/78.774776
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Edge detection in grayscale digital images based on the locations of zero crossings has been investigated. Samples of the image are transformed using the discrete symmetric cosine transform (DSCT) and filtered using truncated time or frequency sampled forms of the Laplacian-of-Gaussian (I,OG) filter. This correspondence presents and evaluates adaptive block-based filtering procedures to localize edges based on discrete circular and teal transforms. Measures of the signal-to-noise ratio (SNR) and edge localization are provided.
引用
收藏
页码：2313 / 2317
页数：5
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