Spatial-scale-regularized blur kernel estimation for blind image deblurring

2018 ◽  
Vol 68 ◽  
pp. 138-154 ◽  
Author(s):  
Shu Tang ◽  
Xianzhong Xie ◽  
Ming Xia ◽  
Lei Luo ◽  
Peisong Liu ◽  
...  
Keyword(s):  
Spatial Scale ◽  
Kernel Estimation ◽  
Image Deblurring ◽  
Blind Image Deblurring ◽  
Blur Kernel Estimation ◽  
Blur Kernel ◽  
Blind Image

A blind image deblurring algorithm based on relative gradient and sparse representation

2018 ◽  
Vol 32 (34n36) ◽  
pp. 1840087 ◽  
Author(s):  
Qiwei Chen ◽  
Yiming Wang
Keyword(s):  
Image Reconstruction ◽  
Image Restoration ◽  
Sparse Representation ◽  
Kernel Estimation ◽  
Image Deblurring ◽  
Blind Image Deblurring ◽  
Overcomplete Dictionary ◽  
Blur Kernel ◽  
Blind Image

A blind image deblurring algorithm based on relative gradient and sparse representation is proposed in this paper. The layered method restores the image by three steps: edge extraction, blur kernel estimation and image reconstruction. The positive and negative gradients in texture part have reversal changes, and the edge part that reflects the image structure has only one gradient change. According to the characteristic, the edge of the image is extracted by using the relative gradient of image, so as to estimate the blur kernel of the image. In the stage of image reconstruction, in order to overcome the problem of oversize of the image and the overcomplete dictionary matrix, the image is divided into small blocks. An overcomplete dictionary is used for sparse representation, and the image is reconstructed by the iterative threshold shrinkage method to improve the quality of image restoration. Experimental results show that the proposed method can effectively improve the quality of image restoration.

scholarly journals BID: An Effective Blind Image Deblurring Scheme to Estimate the Blur Kernel for Various Scenarios

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 9185-9195
Author(s):  
Hong Zhang ◽  
Yawei Li ◽  
Yujie Wu ◽  
Zeyu Zhang
Keyword(s):  
Image Deblurring ◽  
Blind Image Deblurring ◽  
Blur Kernel ◽  
Blind Image

Self-Paced Kernel Estimation for Robust Blind Image Deblurring

2017 ◽  
Author(s):  
Dong Gong ◽  
Mingkui Tan ◽  
Yanning Zhang ◽  
Anton van den Hengel ◽  
Qinfeng Shi
Keyword(s):  
Kernel Estimation ◽  
Image Deblurring ◽  
Blind Image Deblurring ◽  
Blind Image
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