DocumentCode :
319626
Title :
Problems in area-based image registration for stereo
Author :
Thorpe, Glen ; Fraser, Donald
Author_Institution :
Sch. of Electr. Eng., New South Wales Univ., Canberra, ACT, Australia
Volume :
1
fYear :
1997
fDate :
4-4 Dec. 1997
Firstpage :
347
Abstract :
While registration of stereo image pairs is an old problem, it is one which is of great importance, not only to cartographers, but also in machine vision applications. Many of the existing, successful cartographic systems are commercial, and the exact techniques used are not well publicised. We have been using area-based correlation methods in our work on wide-area imaging through the atmosphere, in which we have successfully registered, point-by-point, atmospherically-distorted images from a time sequence recorded by an astronomical telescope. The resulting registration provides both a measure of the turbulence (allowing its visualisation) and a reference for subsequent geometric restoration of the images. Following our success in astronomical imaging, we decided to apply our technique to the registration of image stereo pairs. This was done for several reasons-to see how our method compared with others in this traditional area, to determine how robust is is over different problem domains, and to further refine the method. Although the concept of area-based correlation is simple and well known, we have found that, in application, it requires a great deal of experimentation and "hand-crafting" to achieve useful and successful results. In the stereo application, we found that further fine-tuning has been required, but the end result is a very robust registration technique which can be applied to a wide variety of problems.
Keywords :
astronomy; atmospheric techniques; atmospheric turbulence; cartography; correlation methods; image matching; image registration; stereo image processing; area matching; area-based correlation methods; area-based image registration; astronomical imaging; astronomical telescope; atmosphere; atmospherically-distorted images; cartigraphic systems; digital elevation models; geometric restoration; image stereo pairs; region matching; stereo application; time sequence; turbulence measure; wide-area imaging; Atmosphere; Atmospheric measurements; Correlation; Extraterrestrial measurements; Image registration; Image restoration; Machine vision; Robustness; Telescopes; Visualization;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
TENCON '97. IEEE Region 10 Annual Conference. Speech and Image Technologies for Computing and Telecommunications., Proceedings of IEEE
Conference_Location :
Brisbane, Qld., Australia
Print_ISBN :
0-7803-4365-4
Type :
conf
DOI :
10.1109/TENCON.1997.647328
Filename :
647328
Link To Document :
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