Title
A study on region-based recognition of 3D faces with expression variations
Abstract
In this paper, we propose the application of masks as a means to mitigate expression-distortions on 3D faces and to enhance their recognition performance. Masking becomes necessary to de-emphasize the face regions that deform un- der expression. We have conducted experiments with various masks, namely, ellipse-shaped binary masks, Gaussian, su- per-Gaussian and raised-cosine masks. The design issues of the masks, such as the mask size, the centre, the support region, the decay rate of the tails, etc. are studied and ad- justed with respect to their recognition performances. We show first that warping the depth values of corresponding face points onto the same spatial coordinates while obtain- ing the 2D depth images is beneficial, and second, that proper masking can add several percentage points to the recognition performance.
Year
Venue
Keywords
2007
EUSIPCO
emotion recognition,face recognition,image matching,iterative methods,3d face region-based recognition,gaussian mask,ellipse-shaped binary mask,expression variations,expression-distortion mitigation,iterative closest point algorithm,masking,raised-cosine mask,recognition performance enhancement,spatial coordinates,super-gaussian mask,tail decay rate
Field
DocType
ISBN
Facial recognition system,Computer vision,Image warping,Pattern recognition,Spatial reference system,Masking (art),Gaussian,Solid modeling,Artificial intelligence,Mathematics,Principal component analysis,Binary number
Conference
978-839-2134-04-6
Citations 
PageRank 
References 
0
0.34
7
Authors
4
Name
Order
Citations
PageRank
Helin Dutaacõ100.34
Berk Gokberk21136.23
Bülent Sankur3112873.91
lale akarun4120170.68