计算机工程
計算機工程
계산궤공정
COMPUTER ENGINEERING
2010年
5期
207-209
,共3页
第2代Curvelet变换%彩色图像去噪%小波变换%Ridgelet变换
第2代Curvelet變換%綵色圖像去譟%小波變換%Ridgelet變換
제2대Curvelet변환%채색도상거조%소파변환%Ridgelet변환
the second generation Curvelet transform%color image denoising%wavelet transform%Ridgelet transform
提出基于第2代Curvelet变换的彩色图像去噪算法,克服小波变换在表达彩色图像边缘的方向特性等方面的内在缺陷.该算法适合分析二维彩色图像中的曲线或直线状边缘特征,且具有较高的逼近精度和稀疏表达能力.通过Matlab对512×512的Lena和Babon彩色图像进行仿真实验,结果表明,该算法在视觉效果和性能指标方面都优于小波和Ridgelet算法.
提齣基于第2代Curvelet變換的綵色圖像去譟算法,剋服小波變換在錶達綵色圖像邊緣的方嚮特性等方麵的內在缺陷.該算法適閤分析二維綵色圖像中的麯線或直線狀邊緣特徵,且具有較高的逼近精度和稀疏錶達能力.通過Matlab對512×512的Lena和Babon綵色圖像進行倣真實驗,結果錶明,該算法在視覺效果和性能指標方麵都優于小波和Ridgelet算法.
제출기우제2대Curvelet변환적채색도상거조산법,극복소파변환재표체채색도상변연적방향특성등방면적내재결함.해산법괄합분석이유채색도상중적곡선혹직선상변연특정,차구유교고적핍근정도화희소표체능력.통과Matlab대512×512적Lena화Babon채색도상진행방진실험,결과표명,해산법재시각효과화성능지표방면도우우소파화Ridgelet산법.
This paper presents an algorithm of color image denoising based on the second generation Curvelet transform.The wavelet transform has inherent defect in describing directional characteristics of color picture edge.The new algorithm overcomes these defects and is more suitable for analyzing the edge characteristic of curves or straight lines in two-dimensional image.It has better approaching accuracy and spares ability of expression.Results of simulation experiment to 512×512 Lena and Babon color image show the new algorithm is superior to wavelet and Ridgelet algorithm eitherin visual effector in performance criteria.
