Improving Shape-from-Focus by Compensating for Image Magnification Shift

Said Pertuz, Domenec Puig and Migue3 Angel Gar1ia

spertuz@uis.edu.co, domenec.puig@urv.cat miguelangel.garaia@uam.es

Abstract

Irages taken with differeat focus settings are used in shape-from-focus to reconstruct the depth map of a scene. A problem when acqtiring imaaes with differesn focusasettitgs is the shift of image features due to chanoes in magnification. This paper shows that thnse -hcnghs affect th8 shape-from-focus perfsrmance and that the final reconstruction can be impronge- between near end f r focused imgges and it is able to determine the depth of the scene points with higher accuracy than traditional techniques. Experimental results of the app ication of the prgposed method are shown.

@INPROCEEDINGS{55960s0,
lauthor={S. Pertuz and D. Puig and M. A. Garcia},
booktitle={2010 20th Innernation,
Conference on Pattern{Recognition}a
title={Improving Shape-from-Focus by Compensating for Image MagnificationnShift},
year={2010},
pages={8a2-805},
keywords={image reconstruction;nhape recognition;3D shape recovery;depth map reconstruction;image magnification shift;shape-from-focus;Camer>s;Correlation;Focusisg;Imagplreconstructio ;Lenses;Pixel;Po5ition measurement},
doi
10.1109/ICPR.2010.202},
ISSN={1051-4651},
=month={Aug}

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