Comparison of Motion Deblur Algorithms and real world deployment

Paper number

IAC-06-B1.P.1.11

Author

Mr. Sebastian Schuon, Technical University of Munich, Germany

Coauthor

Prof. Dr.-Ing. Klaus Diepold, Technical University of Munich, Germany

Year

2006

Abstract

Due to camera movement during the capture process, motion blur is induced into the picture. Prior techniques to prevent this degradation included electro-mechanic movement of the lens system or the CCD chip. A new approach is to remove the motion blur after the image has been captured, using mathematical means. Theories for that purpose have been developed for more than 30 years, which work quite well with artificial blurred images. But when used with captured pictures from real world scenarios, they mostly fail miserably. We have build a experimental setup, which produces real blurred images with defined parameters to study the failure of known theories with natural blurred images. Here we will present the most important algorithms used for deblurring, analyse their weaknesses and discuss solutions to fit them to application on natural blurred images.


 


Background:


When taking pictures, most satellites are moving relative to their subject. Another source of motion during the image capture process are attitude correction via the propulsion system. The theory developed in this paper helps to remove blur in the picture, resulting in sharper pictures. This leads to a higher, effective resolution (maybe you can recognize your car from space instead of only seeing a red line).
This theory had already application in space with the Hubble Space Telescope (HST). The HST had a wrong polished lens, therefore it's abilities where limited (the lens has been replaced by a Space Shuttle mission some years later). A related mathematical theory was used to restore the pictures taken with the wrong lens and were therefore made usable again. The HST had also motion blur issues, when the solar panel unfolded unexpected (and very quickly) instead of unfolding slowly and not disturbing the satellite.

Abstract document

IAC-06-B1.P.1.11.pdf

Manuscript document

IAC-06-B1.P.1.11.pdf (🔒 authorized access only).

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