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Proceedings Paper

Motion deblurring by coupled nonlinear diffusion with discrete calculus adaptive to a motion direction
Author(s): Takahiro Saito; Hiroyuki Harada; Takashi Komatsu
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Paper 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.

Paper Details

Date Published: 14 March 2005
PDF: 12 pages
Proc. SPIE 5685, Image and Video Communications and Processing 2005, (14 March 2005); doi: 10.1117/12.585208
Show Author Affiliations
Takahiro Saito, Kanagawa Univ. (Japan)
Hiroyuki Harada, Kanagawa Univ. (Japan)
Takashi Komatsu, Kanagawa Univ. (Japan)


Published in SPIE Proceedings Vol. 5685:
Image and Video Communications and Processing 2005
Amir Said; John G. Apostolopoulos, Editor(s)

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