Paper Info
Title
Motion De-Blurring By Coupled Nonlinear Diffusion With Discrete Calculus Adaptive To A Motion Direction
Abstract
We previously presented a method of selective image sharpening based on a coupled nonlinear diffusion process that was composed of a nonlinear diffusion term, a fidelity term and an isotropic peaking term. It could sharpen only blurred edges without increasing noise visibility. This paper extends our method to the removal of blurs in images due to image motion. Motion blur is not only shift-variant but also anisotropic. To adapt our method to motion de-blurring, we replaced our isotropic peaking term, with an anisotropic peaking term steered in direction of motion at each pixel. We then devised discrete calculus to adapt it to the direction of motion. Through experiments with a test sequence of moving images containing artificial motion-blurs, we quantitatively evaluated sharpening performance. Our new method with the anisotropic peaking term performed better than our prototypal method with the isotropic peaking term, and was robust against errors in the direction of motion.
Year
DOI
Venue
2005
10.1117/12.585208
Image and Video Communications and Processing 2005, Pts 1 and 2
Keywords
Field
DocType
nonlinear diffusion, nonlinear filtering, iterative algorithm, motion blur
Sharpening,Isotropy,Diffusion process,Motion detection,Deblurring,Motion blur,Image processing,Image restoration,Calculus,Mathematics
Conference
Volume
ISSN
Citations 
5685
0277-786X
0
PageRank 
References 
Authors
0.34
2
3
Name
Order
Citations
PageRank
Takahiro Saito110030.46
hiroyuki harada200.34
Takashi Komatsu311333.96