In search of illumination invariants

2002 ◽  
Author(s):  
H.F. Chen ◽  
P.N. Belhumeur ◽  
D.W. Jacobs
Keyword(s):  
Illumination Invariants

Method and application of active visual tracking based on illumination invariants

2013 ◽  
Author(s):  
Jie Su ◽  
Gui-sheng Yin ◽  
Lei Wang ◽  
Yong-qian Sun ◽  
Zheng Liu
Keyword(s):  
Visual Tracking ◽  
Illumination Invariants

Illumination invariants in deep video expression recognition

2018 ◽  
Vol 76 ◽  
pp. 25-35 ◽  
Author(s):  
Otkrist Gupta ◽  
Dan Raviv ◽  
Ramesh Raskar
Keyword(s):  
Expression Recognition ◽  
Illumination Invariants

scholarly journals Improvement of Illumination-Insensitive Feathers for Face Recognition under Complex Illumination Conditions

2018 ◽  
Author(s):  
Liyun Zhuang ◽  
Yepeng Guan
Keyword(s):  
Face Recognition ◽  
Recognition Rate ◽  
Experimental Results ◽  
Superior Performance ◽  
Illumination Condition ◽  
The Arts ◽  
Reflectance Model ◽  
Mean Filter ◽  
Novel Method ◽  
Illumination Invariants

Complex illumination condition is one of the most critical challenging problems for practical face recognition. In this paper, we propose a novel method to improve the illumination invariants for solving this challenge. Firstly, a new method based on the Lambert reflectance model is proposed to extract illumination invariant, which is less insensitive to complex illumination variations. Secondly, in order to repair the defects caused by process of illumination invariants extraction, Fast Mean Filter is utilized to smooth and remove noise. Lastly, for raising the richness of information in output image, a nonlinear normalization transformation is proposed. Compared with the state-of-the-arts, experimental results show that the proposed method can extract more robust illumination invariants. Apart from it, the richness of information in processed image is greater and superior performance in face recognition rate is superior.

Reflectance-Based Segmentation Using Photometric and Illumination Invariants

2014 ◽  
pp. 179-186 ◽  
Author(s):  
Jose-Antonio Pérez-Carrasco ◽  
Begoña Acha-Piñero ◽  
Carmen Serrano-Gotarredona ◽  
Theo Gevers
Keyword(s):  
Illumination Invariants
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