Local descriptors and similarity measures for frontal face recognition: A comparative analysis 小小小小 小小小 : 小小小 小小小 :
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About the Author: Witold Pedrycz Department of Electrical and
Computer Engineering, University of Alberta, Canada Professor &
Canada Research Chair & IEEE Fellow & Professional Engineer
Research interests and activities: Software Engineering System
modelling and knowledge discovery Reconfigurable and evolvable
architectures. Pattern recognition Personal Homepage
http://www.ece.ualberta.ca/~pedrycz/index.html
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About the Author: Marek Reformat A member of the IEEE and ACM.
A member of program committees of several conferences related to
computational intelligence and software engineering. Actively
involved in North American Fuzzy Information Processing Society
(NAFIPS). Research interests and activities: Knowledge extraction
and knowledge representation Semantic-based intelligent systems
Decision support Software quality and maintenance Personal Homepage
http://www.ece.ualberta.ca/~reform/index.html
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Contents Main process Local descriptors Gabor filter with LBP
Similarity measures & Experimental results
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Taxonomy On pixel LBP,CS,RI Psychological WLD Ternary LTP,DLTP
Distance based TPLBP,FPLBP Local descriptors Rotation invar Shifted
LBP Selete subset U2,DLBP,SELBP On averaged ILBP,MBLBP,GR AB Three
Dimen VLBP,LBP-TOP MultiresolutionGa bor,MB,GRAB local descriptors
on Gabor filtered image Gabor magnitude LGBP,MHLVP,LGBPHS,MU LGBP
Gabor magnitude & phase ELGBP,MBP 3D GV- LBPTOP Gabor phase
quantization HGPP,LGPDP,LGXP Derivative patterns ELGBP,LDP
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Main process 1 2 3
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Main process Local pattern: pixel level description
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Contents Main process Local descriptors Gabor filter with LBP
Similarity measures & Experimental results
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Local binary patterns: Circular LBP Bilinear interpolation of a
pixel Basic LBP 57 Uniform-Ri LBP B A Elongated LBP New Variants
Dominant LBP Statistically Effective LBP Hamming LBP Baisc LBP
etc
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Local binary patterns: Threshold 100.11 ILBP
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Local binary patterns: Threshold L2 L3L4 Magnitude L1 Sign
ELBP
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Local binary patterns: Magnitude Sign Original image Center
gray level Local difference M S clbp_S clbp_M clbp_C clbp_map
classifier clbp_Histogram CLBP
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Local binary patterns: DLTP=| LTPU-LTPL|=135-40=95 LTP 5
(AELTP) LTP
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Local binary patterns: Soft-LBP
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Gabor filter with LBP: SILT P [64(1-t) 64(1+t)] t=0.1
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Local binary patterns: Integral image D=4+1-(2+3) MB-LBP
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Local binary patterns: GRAB(General Region Assigned to binary)
5 GARB # noise & variations & rotation tolerant operator
solving the orientation problem small variation in edge angles
cause smaller variations in the binary representation
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Local binary patterns: CS-LBP
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Local binary patterns: TP-LBP
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Local binary patterns: FP-LBP
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Local binary patterns: LDP 1 Robust against Gaussian white
noise and non-monotonic illumination changes 2 Rotation
invariant
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Local binary patterns: VLBP
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Local binary patterns: VLBP
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Local binary patterns: LBP-TOP
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Local binary patterns: LBP-TOP
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Local binary patterns: LBP-TOP
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Local binary patterns: LBP-TOP
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Contents Main process Local descriptors Gabor filter with LBP
Similarity measures & Experimental results
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Gabor filter with LBP
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Gabor filter with LBP
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= = + +
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Gabor filter with LBP Gabor Dennis Gabor, 1946
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Gabor filter with LBP: 10 GGPP 80 GGPP HGP P
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Gabor filter with LBP: GGPP LGPP HGP P
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Gabor filter with LBP: LGPD P
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Gabor filter with LBP: LGXP
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Contents Main process Local descriptors Gabor filter with LBP
Similarity measures & Experimental results
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Similarity measures
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Fusing sub-region 1: All sub-regional histograms concatenated
2: Sub-regions of two images are compared pair-wise and the results
are aggregated