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Loglet SIFT for part description in deformable part models : application to face alignment
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Zhang, Qiang and Bhalerao, Abhir (2016) Loglet SIFT for part description in deformable part models : application to face alignment. In: British Machine Vision Conference (BMVC 2016), York, UK, 19-22 Sep 2016. Published in: Proceedings of the British Machine Vision Conference (BMVC) 31.1-31.12. ISBN 1901725596. doi:10.5244/C.30.31
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Official URL: https://dx.doi.org/10.5244/C.30.31
Abstract
We focus on a novel loglet-SIFT descriptor for the parts representation in the De- formable Part Models (DPM). We manipulate the feature scales in the Fourier domain and decompose the image into multi-scale oriented gradient components for computing SIFT. The scale selection is controlled explicitly by tiling Log-wavelet functions (loglets) on the spectrum. Then oriented gradients are obtained by adding imaginary odd parts to the loglets, converting them into differential filters. Coherent feature scales and domain sizes are further generated by spectrum cropping. Our loglet gradient filters are shown to compare favourably against spatial differential operators, and have a straightforward and efficient implementation. We present experiments to validate the performance of the loglet-SIFT descriptor which show it to improve the DPM using a supervised descent method by a significant margin.
| Item Type: | Conference Item (Paper) | ||||||
|---|---|---|---|---|---|---|---|
| Subjects: | Q Science > QA Mathematics > QA76 Electronic computers. Computer science. Computer software | ||||||
| Divisions: | Faculty of Science > Computer Science | ||||||
| Library of Congress Subject Headings (LCSH): | Image processing -- Digital techniques | ||||||
| Journal or Publication Title: | Proceedings of the British Machine Vision Conference (BMVC) | ||||||
| Publisher: | BMVA Press | ||||||
| ISBN: | 1901725596 | ||||||
| Official Date: | 19 September 2016 | ||||||
| Dates: |
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| Page Range: | 31.1-31.12 | ||||||
| Article Number: | 31 | ||||||
| DOI: | 10.5244/C.30.31 | ||||||
| Status: | Peer Reviewed | ||||||
| Publication Status: | Published | ||||||
| Access rights to Published version: | Open Access | ||||||
| Description: | Editors: Richard C. Wilson, Edwin R. Hancock and William A. P. Smith |
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| Conference Paper Type: | Paper | ||||||
| Title of Event: | British Machine Vision Conference (BMVC 2016) | ||||||
| Type of Event: | Conference | ||||||
| Location of Event: | York, UK | ||||||
| Date(s) of Event: | 19-22 Sep 2016 | ||||||
| Open Access Version: |
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