Title :
A constraint to improve the reliability of stereo matching using the rank transform
Author :
Banks, Jasmine ; Bennamoun, Mohammed ; Kubik, Kurt ; Corke, Peter
Author_Institution :
Space Centre for Satellite Navigation, Queensland Univ. of Technol., Brisbane, Qld., Australia
Abstract :
The rank transform is a non-parametric technique which has been previously proposed for the stereo matching problem. The motivation behind its application to the matching problem is its invariance to certain types of image distortion and noise, as well as its amenability to real-time implementation. This paper derives an analytic expression for the process of matching using the rank transform, and then goes on to derive one constraint which must be satisfied for a correct match. This has been dubbed the rank order constraint or simply the rank constraint. Experimental work has shown that this constraint is capable of resolving ambiguous matches, thereby improving matching reliability. This constraint was incorporated into a new algorithm for matching using the rank transform. This modified algorithm resulted in an increased proportion of correct matches, for all test imagery used
Keywords :
image matching; image representation; stereo image processing; transforms; ambiguous matches; analytic expression; matching reliability; nonparametric technique; rank constraint; rank order constraint; rank transform; real-time implementation; stereo matching; Australia; Constraint theory; Face detection; Manufacturing; Pixel; Radiometry; Satellite broadcasting; Satellite navigation systems; Space technology; Testing;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.757552