Title
Correction of deformed images in real-time Correction of deformed images in real-time
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
Bellingham :SPIE, [*]
Subject
Physics
Source (book)
Proceedings of the 22nd Congress of the International Commission for Optics : Light for the Development of the World, August 15-19, 2011, Puebla, Mexico
ISSN
0277-786X
ISBN
978-0-8194-8585-4
Article Reference
80116O
ISI
000297585800240
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Optical lens systems generally contain non-linear distortion artifacts that impose important limitations on the direct interpretation of the images. Image processing can be used to correct for these artifacts, but due to the calculation-intensive nature of the required distortion correction process, this is usually performed offline. This is not an option in image-based applications that operate interactively, however, where the real-time display of distortion corrected images can be vital. To this end, we propose a new technique to correct for arbitrary geometric lens distortion that uses the parallel processing power of a commercial graphics processing unit (GPU). By offloading the distortion correction process to the GPU, we can relieve the central processing unit (CPU) of doing this computationally very demanding task. We successfully implemented the full distortion correction algorithm on the GPU, thereby achieving a display rate of over 30 frames/sec for fully processed images of size 1024 x 768 pixels without the need for any additional digital image processing hardware.
E-info
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Handle