{"title":"Discriminant analysis of stochastic models and its application to face recognition","authors":"Ling Chen, H. Man","doi":"10.1109/AMFG.2003.1240817","DOIUrl":"https://doi.org/10.1109/AMFG.2003.1240817","url":null,"abstract":"As the vital component of a recently developed stochastic model based feature generation scheme, Fisher score is increasingly used in classification applications. We present a generalization of previous proposed feature generation schemes by introducing the concept of multiclass mapping, which is oriented to multiclass classification problems. Based on the generalized feature generation scheme, a novel face recognition system is developed by a systematical integration of hidden Markov model (HMM) and linear discriminant analysis (LDA). The proposed system is evaluated on a public available face database of 50 subjects. Comparing to holistic features based LDA method, stand alone HMM method, and LDA method based on previous proposed feature generation schemes, which are intrinsically oriented to two-class problems, superior performance is obtained by our method in terms of recognition accuracy.","PeriodicalId":388409,"journal":{"name":"2003 IEEE International SOI Conference. Proceedings (Cat. No.03CH37443)","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115007385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
P. J. Phillips, P. Grother, Ross Micheals, D. Blackburn, Elham Tabassi, Mike Bone
{"title":"Face recognition vendor test 2002","authors":"P. J. Phillips, P. Grother, Ross Micheals, D. Blackburn, Elham Tabassi, Mike Bone","doi":"10.1109/AMFG.2003.1240822","DOIUrl":"https://doi.org/10.1109/AMFG.2003.1240822","url":null,"abstract":"Summary form only given. The face recognition vendor test (FRVT) 2002 is an independently administered technology evaluation of mature face recognition systems. FRVT 2002 provides performance measures for assessing the capability of face recognition systems to meet requirements for large-scale, real-world applications. Participation in FRVT 2002 was open to commercial and mature prototype systems from universities, research institutes, and companies. Ten companies submitted either commercial or prototype systems. FRVT 2002 computed performance statistics on an extremely large data set-121,589 operational facial images of 37,437 individuals. FRVT 2002 1) characterized identification and watch list performance as a function of database size, 2) estimated the variability in performance for different groups of people, 3) characterized performance as a function of elapsed time between enrolled and new images of a person, and 4) investigated the effect of demographics on performance. FRVT 2002 showed that recognition from indoor images has made substantial progress since FRVT 2000. Demographic results show that males are easier to recognize than females and that older people are easier to recognize than younger people. FRVT 2002 also assessed the impact of three new techniques for improving face recognition: three-dimensional morphable models, normalization of similarity scores, and face recognition from video sequences. Results show that three-dimensional morphable models and normalization increase performance and that face recognition from video sequences offers only a limited increase in performance over still images. A new XML-based evaluation protocol was developed for FRVT 2002. This protocol is flexible and supports evaluations of biometrics in general The FRVT 2002 reports can be found at http://www.frvt.org.","PeriodicalId":388409,"journal":{"name":"2003 IEEE International SOI Conference. Proceedings (Cat. No.03CH37443)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126589376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}