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Multiresolution estimation of 2-d disparity using a frequency domain approach
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Calway, Andrew David, Knutsson, Hans and Wilson, Roland (1991) Multiresolution estimation of 2-d disparity using a frequency domain approach. University of Warwick. Department of Computer Science. (Department of Computer Science research report). (Unpublished)
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Abstract
An efficient algorithm for the estimation of the 2-d disparity between a pair of stereo images is presented. Phase based methods are extended to the case of 2-d disparities and shown to correspond to computing local correlation fields. These are derived at multiple scales via the frequency domain and a coarse-to-fine 'focusing' strategy determines the final disparity estimate. Fast implementation is achieved by using a generalised form of wavelet transform, the multiresolution Fourier transform (MFT), which enables efficient calculation of the local correlations. Results from initial experiments on random noise stereo pairs containing both 1-d and 2-d disparities, illustrate the potential of the approach.
Item Type: | Report | ||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Computer Science | ||||
Library of Congress Subject Headings (LCSH): | Image analysis | ||||
Series Name: | Department of Computer Science research report | ||||
Publisher: | University of Warwick. Department of Computer Science | ||||
Official Date: | October 1991 | ||||
Dates: |
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Number: | Number 196 | ||||
Number of Pages: | 12 | ||||
DOI: | CS-RR-196 | ||||
Institution: | University of Warwick | ||||
Theses Department: | Department of Computer Science | ||||
Status: | Not Peer Reviewed | ||||
Publication Status: | Unpublished | ||||
Reuse Statement (publisher, data, author rights): | A.D. Calway, H. Knutsson and R.G. Wilson, “Multiresolution Estimation of 2-d Disparity Using a Frequency Domain Approach”, <i>Proceedings of the British Conference on Machine Vision</i>, September 1992, pp. 227-236 (1992) | ||||
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