基于带权核范数最小化和混合高斯模型的去噪模型

doi:10.11772/j.issn.1001-9081.2017.05.1471

计算机应用 ›› 2017, Vol. 37 ›› Issue (5): 1471-1474.DOI: 10.11772/j.issn.1001-9081.2017.05.1471

• 计算机视觉与虚拟现实 • 上一篇下一篇

基于带权核范数最小化和混合高斯模型的去噪模型

孙少超

公安海警学院电子技术系, 浙江宁波 315801

收稿日期:2016-10-12 修回日期:2016-11-25 出版日期:2017-05-10 发布日期:2017-05-16
通讯作者: 孙少超
作者简介:孙少超(1984-),男,山东荣成人,讲师,博士,CCF会员,主要研究方向:机器学习、计算机视觉。
基金资助:
公安部技术研究计划项目（2015JSYJC029）；公安海警学院研究中心、科研团队研究计划项目。

Image denoising via weighted nuclear norm minimization and Gaussian mixed model

SUN Shaochao

Department of Electronic Technology, China Maritime Police Academy, Ningbo Zhejiang 315801, China

Received:2016-10-12 Revised:2016-11-25 Online:2017-05-10 Published:2017-05-16
Supported by:
This work was partially supported by the Technology Research Project of Ministry of Public Security of China (2015JSYJC029), the Public Security Marine Police Academy Research Center, Research Team Research Project.

摘要/Abstract

摘要： 非局部自相似性（NSS）先验在图像恢复中发挥重要作用，如何充分利用这一先验提高图像恢复性能仍值得深入研究，提出一种基于带权核范数最小化和混合高斯模型的去噪模型。首先，采用混合高斯模型（GMM）对无噪声的自然图像非局部自相似图像块进行训练，再用训练好的混合高斯模型指导退化的图像产生非局部自相似图像块组；然后，结合带权的核范数最小化技术实现图像的去噪，并对模型的保真项进行一般性扩展，给出收敛的求解算法。仿真实验表明，所提方法与基于3D滤波的块匹配（BM3D）算法、同时稀疏编码学习（LSSC）算法和带权的核范数最小化（WNNM）模型相比，峰值信噪比（PSNR）提高0.11~0.49 dB。

关键词: 图像去噪, 非局部自相似性, 核范数最小化, 混合高斯模型

Abstract: Nonlocal Self-Similarity (NSS) prioritization plays an important role in image restoration, but it is worthy of further research that how to make full use of this prior to improve the performance of image restoration. An image denoising via weighted nuclear norm minimization and Gaussian Mixed Model (GMM) was proposed. Firstly, the clean NSS image blocks of the natural image were trained by GMM, and then the trained GMM was used to guide the degraded image to produce NSS image blocks. Then, the weighted nuclear norm minimization was used to realize image denoising, an extended model was proposed by modifying the fidelity item, and the corresponding convergent algorithm was given. The simulation results show, compared with some advanced algorithms such as Block Matching with 3D filtering (BM3D), Learned Simultaneous Sparse Coding (LSSC) and Weighted Nuclear Norm Minimization (WNNM), the proposed method improves the Peak Signal-to-Noise Ratio (PSNR) by 0.11 to 0.49 dB.

Key words: image denoising, Nonlocal Self-Similarity (NSS), Nuclear Norm Minimization (NNM), Gaussian Mixed Model (GMM)

中图分类号:

TP391.41

孙少超. 基于带权核范数最小化和混合高斯模型的去噪模型[J]. 计算机应用, 2017, 37(5): 1471-1474.

SUN Shaochao. Image denoising via weighted nuclear norm minimization and Gaussian mixed model[J]. Journal of Computer Applications, 2017, 37(5): 1471-1474.

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基于带权核范数最小化和混合高斯模型的去噪模型

Image denoising via weighted nuclear norm minimization and Gaussian mixed model

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