Computer Engineering and Applications ›› 2009, Vol. 45 ›› Issue (11): 19-21.DOI: 10.3778/j.issn.1002-8331.2009.11.006

• 博士论坛 • Previous Articles     Next Articles

Total variation image denoising based on fractional B-spline wavelet

LIU Hong-yi1,2,WEI Zhi-hui2,ZHANG Zheng-rong1,2   

  1. 1.School of Science,Nanjing University of Science and Technology,Nanjing 210094,China
    2.School of Computer Science and Technology,Nanjing University of Science and Technology,Nanjing 210094,China
  • Received:2008-12-10 Revised:2009-01-31 Online:2009-04-11 Published:2009-04-11
  • Contact: LIU Hong-yi

分数阶B样条小波域的图像变分去噪

刘红毅1,2,韦志辉2,张峥嵘1,2   

  1. 1.南京理工大学 理学院,南京 210094
    2.南京理工大学 计算机科学与技术学院,南京 210094
  • 通讯作者: 刘红毅

Abstract: Fractional B spline has a fractional order approximation of α+1,so can present image texture better.Extending the fractional B spline to two-dimension,and applying wavelet threshold to image denoising,a denoising method based on fractional B spline and total variation is proposed.Experimental results show that new denoising methods perform better both in denoising and preserving texture,compared with the traditional dependence of coefficients denoising algorithm.

Key words: fractional B-spline, image denoising, total variation

摘要: 分数阶B样条具有分数阶逼近,可以更好地刻画图像纹理部分。将分数阶B样条小波推广到二维领域,利用分数阶B样条小波进行图像阈值去噪,提出了分数阶B样条小波域图像去噪的变分模型。同传统小波函数与全变差结合模型比较,分数阶B样条小波在保持纹理和去噪方面得到了明显改进。

关键词: 分数阶B样条, 图像去噪, 全变差