Quaternionic Local Ranking Binary Pattern: A Local Descriptor of Color Images

This paper proposes a local descriptor called quaternionic local ranking binary pattern (QLRBP) for color images. Different from traditional descriptors that are extracted from each color channel separately or from vector representations, QLRBP works on the quaternionic representation (QR) of the co...

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Bibliographic Details
Published in:IEEE transactions on image processing 2016-02, Vol.25 (2), p.566-579
Main Authors: Lan, Rushi, Zhou, Yicong, Tang, Yuan Yan
Format: Article
Language:English
Subjects:
Algorithms
Channels
Color
color image processing
Color imagery
Databases, Factual
Face - anatomy & histology
Face recognition
Feature extraction
Humans
Image coding
Image color analysis
Image Processing, Computer-Assisted - methods
local binary pattern (LBP)
local descriptor
Pixels
Quaternionic representation (QR)
Quaternions
Ranking
Representations
Robustness
Translations
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Summary:This paper proposes a local descriptor called quaternionic local ranking binary pattern (QLRBP) for color images. Different from traditional descriptors that are extracted from each color channel separately or from vector representations, QLRBP works on the quaternionic representation (QR) of the color image that encodes a color pixel using a quaternion. QLRBP is able to handle all color channels directly in the quaternionic domain and include their relations simultaneously. Applying a Clifford translation to QR of the color image, QLRBP uses a reference quaternion to rank QRs of two color pixels, and performs a local binary coding on the phase of the transformed result to generate local descriptors of the color image. Experiments demonstrate that the QLRBP outperforms several state-of-the-art methods.
ISSN:1057-7149
1941-0042
DOI:10.1109/TIP.2015.2507404