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Journal of Electronic Imaging

Compact local color descriptor based on quaternion principle component analysis
Author(s): Qiang Wang; Zhengzhi Wang
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Paper Abstract

In order to improve discriminative power and illumination invariance, local color descriptors have been proposed. However, the high dimensionality of color descriptor limits the performance of matching in terms of speed. It is desirable to reduce the dimensionality for efficient computation and compact representation. A compaction of color descriptor is presented. The color feature vector is represented as a quaternion vector and then projected into a precomputed eigenspace. The resulting descriptor is highly compact and the experimental results show that the performance is almost identical to that of the standard RGB-SIFT.

Paper Details

Date Published: 30 August 2013
PDF: 4 pages
J. Electron. Imag. 22(3) 033021 doi: 10.1117/1.JEI.22.3.033021
Published in: Journal of Electronic Imaging Volume 22, Issue 3
Show Author Affiliations
Qiang Wang, National Univ. of Defense Technology (China)
Zhengzhi Wang, National Univ. of Defense Technology (China)

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