正在加载图片...
第2期 邵真天,等:一种基于曲波变换的图像去块算法 ·107· 层的影响,故只需对这2层分别进行处理.ine层的 [10]DONOHO D L,DUNCAN M R.Digital curvelet trans- 系数矩阵被分为与平滑区域和纹理区域分别相关的 form:strategy,implementation,experiments[R].Califor- 2部分,并分别对其使用对应的自适应滤波模板.同 nia,America:Stanford University,2000. [11]CANDES E J,DONOHO D L.Ridgelets:the key to high- 时,对各尺度和方向上的Detail层系数采用另外的 er-dimensional intermittency J].Philosophical Transac- 滤波模板进行处理.最终根据这些处理过的系数重 tions of the Royal Society of London Series A,1999,357: 构原始退化图像.实验证明,与传统的算法相比,本 2495-2509. 文的算法能够更好地保留图像的细节.从主观上来 [12]陈学堂,张元,杨坤平,等.基于第二代曲波变换算法的检 说,本文的算法获得了一个更好的复原效果;而从客 测图像增强[J].传感器与微系统,2008,27(12):8-10. 观上说,本文算法也获得了更高的PSNR,保留了图 CHEN Xuetang,ZHANG Yuan,YANG Kunping,et al. Testing-image enhancement based on II curvelet algorithm 像更高的频率成分.而且,该算法对不同尺寸的图像 [J].Transducer and Microsystem Technologies,2008,27 也具有更好的适用性,可被运用在诸如刑事调查中 (12):8-10. 复原退化图像等场合, [13 ]LI Y,NING H J,ZHANG Y N,et al.Nonlinear curvelet diffusion for noisy image enhancement[C]//Intemational 参考文献: Conference on Image Processing.Brussels,Belguim 2011:2257-2560. [1]LUO Y,KWARD R.Removing the blocking artifacts of block-based DCT compressed images[J].IEEE Trans on [14]武治国,王延杰。一种基于边缘的曲波变换图像融合方 法[J].光学技术,2009,35(5):682690 Image and Processing,2003,12(7):838-842. WU Zhiguo,WANG Yanjie.Image fusion algorithm using [2]张学全,顾晓东,孙辉先.基于自适应空域滤波的图像去 curvelet transform based on the edge detection[J].Optical 块效应算法[J].计算机工程,2009,35(4):218-220. Technique,2009,35(5):682690. ZHANG Xuequan,GU Xiaodong,SUN Huixian.De-block [15]HU X L,LU H M,ZHANG L F,et al.A new type of algorithm for compressed image based on adaptive space do- multi-focus image fusion method based on curvelet trans- main filtering[J].Computer Engineering,2009,35(4): 218-220 forms[C]//Proceedings of the 2010 Inter national Confer- ence on Electrical and Control Engineering.Wuhan,Chi- [3]李欣,陈帅.一种有效的空城去块效应算法[J].信息技 na,2010:172-175. 术,2011,8:86-93. LI Xin,CHEN Shuai.A new adaptive de-blocking algorithm [16]DUNCAN D Y P,DO M N.Directional multiscale model- ing of images using the contourlet transform[J].IEEE on spatial domain[J].Information Technology,2011,8: Transactions on Image Processing,2006,15(6):1610- 86-93. 1620. [4]LIEWA W C,YAN H.Blocking artifacts reduction in JPEG [17]JIANG T,ZHAO X,DING WW,et al.Improved image compressed images using overcomplete wavelet represented denoising method based on curvelet transform[C]//2010 [C]//International Symposium on Intelligent Multimedia. IEEE International Conference on Information and Automa- Hong Kong,China,2001:129-132. tion.Harbin,China,2010:1086-1090. [5]石敏,易清明,刘金梅.一种有效的块DCT编码图像去 [18]CANDES E J,DEMANET L,DONOHO D,et al.Cur- 块效应算法[J].计算机应用,2007,27(6):1460- 1462. eLab2.1.2[EB/0L].[200808-15].htp://www.cur SHI Min,YI Qingming,LIU Jinmei.Effective de-blocking velet.org/. 作者简介: algorithm for block-DCT images [J].Computer Applica- 邵真天,男,1989年生,硕士研究生 ions,2007,27(6):1460-1462. [6]CANDES E J,DONOHO D L.Curvelets-a surprisingly ef- 主要研究方向为图像处理与模式识别。 fective nonadaptive representation for objects with edges [C]//Curves and Surfaces.Nashville,USA,2000:105- 120. [7]CANDES E J,GUO F.New multiscale transforms minimum total variation synthesis:application to edge-preserving im- age reconstruction[J].Signal Processsing:Special Issue on 袁杰,男,1975年生,博士,副教授, Image and Video Coding beyond Standards,2002,82: EEE资深会员,曾3次赴日本、1次赴 1519-1543. 香港、3次赴欧洲以访问学者身份进行 [8]CANDES E J,DEMANET L,DONOHO D,et al.Fast dis 学术合作与交流,主要研究方向为图像 crete curvelet transforms[J].Multiscale Modeling and Sim- 与视频处理.拥有省级科技以上成果鉴 ulation,2006,5(3):861899. 定4项,申请发明专利近30项,授权专 [9]CANDES E J.Harmonic analysis of neural networks J]. 利10项.发表学术论文30余篇,多篇被SCI、EI检索. Applied and Computational Harmonic Analysis,1999,6 (2):197218
<<向上翻页
©2008-现在 cucdc.com 高等教育资讯网 版权所有