J4 ›› 2015, Vol. 32 ›› Issue (4): 391-398.

• Image and Information Proc. • Previous Articles     Next Articles

EPLL based Natural Image Restoration using Spatially Constrained Gaussian Mixture Model

Liao Bin, Liu Yuanyuan   

  1. School of Computer Science and Information Engineering, Hubei University, Wuhan 430062, China
  • Received:2014-08-26 Revised:2014-09-28 Published:2015-07-28 Online:2015-08-04

Abstract:

In order to improve the performance of patch prior based natural image restoration, effectively remove the noise and blur of images, a restoration framework of Expected Patch Log Likelihood (EPLL) using spatially constrained gauss mixture model was presented. Based on the spatial distribution information of patches, the spatially constrained gauss mixture statistical characteristics of image patches were as the priors to reach image patch restoration. Image restoration was realized based on the global optimization of image patch restoration. Compared with related works, the proposed method performed better in image denoising and deblurring, and preserved details. The performance of the restoration results was evaluated by the objective indicator. The experimental results show that the proposed method is effective and the visual effect of the image restoration is pleased.

Key words: image processing, image restoration, spatially constrained gaussian mixture model, prior, EPLL