ENHANCING DOCUMENT IMAGES WITH A QUADRATIC FILTER

被引：18

作者：

RAMPONI, G

FONTANOT, P

机构：

[1] DEEI, University of Trieste

来源：

SIGNAL PROCESSING | 1993年 / 33卷 / 01期

关键词：

IMAGE ENHANCEMENT; DOCUMENT PROCESSING; EDGE-PRESERVING SMOOTHING; NONLINEAR FILTERS;

D O I：

10.1016/0165-1684(93)90075-L

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：

A new method for the enhancement of gray-level images of documents is presented. Using the superposition of a linear and a quadratic operator, noise smoothing is achieved without blurring the details of the picture. Some theoretical noise-cancellation properties of the proposed technique are studied. Experimental results are presented, which allow the reader to compare the performance of our methods with the results obtained through more conventional approaches.

引用

页码：23 / 34

页数：12

共 14 条

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