標題: Some modifications of gradient weighted filters
作者: Lin, RS
Hsueh, YC
資訊工程學系
Department of Computer Science
關鍵字: gradient weighted filters;rational filters;image smoothing;Pi filters
公開日期: 1-Dec-1999
摘要: Gradient weighted filters are locally adaptive weighted mean filters. In this paper, a general formulation of gradient weighted filters with some characteristic parameters was derived first from existing gradient weighted filters. Then we propose some modifications by varying these parameters. We modify gradient inverse weighted filters, characterize filters into first and second order filters, and propose Pi filters. Moreover, an imposed criterion for second order filters to preserve fine details was introduced to promote the existing gradient weighted filters. Finally, a criterion to combine first and second order filters was proposed to remove noise with mixed types, Throughout this paper, rational analysis and experimental results demonstrate the efficiency of the proposed methods. (C) 1999 Academic Press.
URI: http://dx.doi.org/10.1006/jvci.1999.0427
http://hdl.handle.net/11536/30928
ISSN: 1047-3203
DOI: 10.1006/jvci.1999.0427
期刊: JOURNAL OF VISUAL COMMUNICATION AND IMAGE REPRESENTATION
Volume: 10
Issue: 4
起始頁: 336
結束頁: 350
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