DocumentCode :
2215416
Title :
A novel approach for nose tip detection using smoothing by weighted median filtering applied to 3D face images in variant poses
Author :
Bagchi, P. ; Bhattacharjee, Debotosh ; Nasipuri, Mita ; Basu, D.K.
Author_Institution :
Dept. of Comput. Sci. & Eng., MCKV Inst. of Eng., Kolkata, India
fYear :
2012
fDate :
21-23 March 2012
Firstpage :
272
Lastpage :
277
Abstract :
This paper is based on n application of smoothing of 3D face images followed by feature detection i.e. detecting the nose tip. The present method uses a weighted mesh median filtering technique for smoothing. In this present smoothing technique we have built the neighborhood surrounding a particular point in 3D face and replaced that with the weighted value of the surrounding points in 3D face image. After applying the smoothing technique to the 3D face images our experimental results show that we have obtained considerable improvement as compared to the algorithm without smoothing. We have used here the maximum intensity algorithm for detecting the nose-tip and this method correctly detects the nose-tip in case of any pose i.e. along X, Y, and Z axes. The present technique gave us worked successfully on 535 out of 542 3D face images as compared to the method without smoothing which worked only on 521 3D face images out of 542 face images. Thus we have obtained a 98.70% performance rate over 96.12% performance rate of the algorithm without smoothing. All the experiments have been performed on the FRAV3D database.
Keywords :
face recognition; median filters; mesh generation; 3D face images; feature detection; maximum intensity algorithm; mesh median filtering technique; nose tip detection; novel approach; weighted median filtering; Face; Feature extraction; Filtering; Filtering algorithms; Nose; Smoothing methods; Three dimensional displays; 3D face images; Weighted median filtering; noisy spikes;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Pattern Recognition, Informatics and Medical Engineering (PRIME), 2012 International Conference on
Conference_Location :
Salem, Tamilnadu
Print_ISBN :
978-1-4673-1037-6
Type :
conf
DOI :
10.1109/ICPRIME.2012.6208357
Filename :
6208357
Link To Document :
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