基于二次噪声检测和细节保护规则函数的图像滤波算法_王暄.pdfVIP

2 Vol.36 No.2 2008 2 ACTAELECTRONICA SINICA Feb. 2008 1,2 1 2 王 ,毕秀丽,马建峰 ( 1 , 710062; 2 , 710071) : , , : ., , ,., 1 ., ,,., , (70%), . : ; ; : TP393 : A : 0372-2112 (2008) 02-0381-05 Image Filtering Algorithm Using Double Noise Detector and Edge-Preserving Regularization Function 1,2 1 2 WANG Xuan ,BIXiu-li , A Jian-feng ( 1. School of Physics and Inf ormation Technology , Shaanxi Normal University, XiAn, Shaanxi 710062, China; 2. ey Lab of Ministry of Educationf or Computer Networks and Inf ormation Security , Xidian University, XiAn, Shaanxi 710071, China) Abstract: The major drawback of recent image filtering algorithms for removing impulsenoise is lack of the ability of pre- serving theimage details and edges which aresmaller than the size of filteringwindows.To alleviatethis limitation,anew image fil- tering algorithm using adoublenoisedetectorand edge-preserving regularization function is proposed inthis paper. Theproposed fil- ter has atwo-stagescheme:detecting noiseandremovingnoise.In order to improve accuraterateof noisedetection,noisecandidates identified with the noise detection algorithm of theadaptive median filter are judged again by local fuzzy membership function, and then a convex objective function composed of data-fidelity term and edge-preserving regularization function is employed to deal