The 2013 face recognition evaluation in mobile environment

Automatic face recognition in unconstrained environments is a challenging task. To test current trends in face recognition algorithms, we organized an evaluation on face recognition in mobile environment. This paper presents the results of 8 different participants using two verification metrics. Most submitted algorithms rely on one or more of three types of features: local binary patterns, Gabor wavelet responses including Gabor phases, and color information. The best results are obtained from UNILJ-ALP, which fused several image representations and feature types, and UC-HU, which learns optimal features with a convolutional neural network. Additionally, we assess the usability of the algorithms in mobile devices with limited resources. © 2013 IEEE

Overview of BTAS 2016 Speaker Anti-spoofing Competition

This paper provides an overview of the Speaker Anti-spoofing Competition organized by Biometric group at Idiap Research Institute for the IEEE International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2016). The competition used AVspoof database, which contains a comprehensive set of presentation attacks, including, (i) direct replay attacks when a genuine data is played back using a laptop and two phones (Samsung Galaxy S4 and iPhone 3G), (ii) synthesized speech replayed with a laptop, and (iii) speech created with a voice conversion algorithm, also replayed with a laptop. The paper states competition goals, describes the database and the evaluation protocol, discusses solutions for spoofing or presentation attack detection submitted by the participants, and presents the results of the evaluation

Overview of BTAS 2016 Speaker Anti-spoofing Competition

This paper provides an overview of the Speaker Anti-spoofing Competition organized by Biometric group at Idiap Research Institute for the IEEE International Conference on Biometrics: Theory, Applications, and Systems (BTAS 2016). The competition used AVspoof database, which contains a comprehensive set of presentation attacks, including, (i) direct replay attacks when a genuine data is played back using a laptop and two phones (Samsung Galaxy S4 and iPhone 3G), (ii) synthesized speech replayed with a laptop, and (iii) speech created with a voice conversion algorithm, also replayed with a laptop. The paper states competition goals, describes the database and the evaluation protocol, discusses solutions for spoofing or presentation attack detection submitted by the participants, and presents the results of the evaluation

Azithromycin is able to control Toxoplasma gondii infection in human villous explants

Submitted by Nuzia Santos ([email protected]) on 2015-02-19T14:46:19Z No. of bitstreams: 1 2014_084.pdf: 1442525 bytes, checksum: 0ea3f08436712815ef93363ee3beae9e (MD5)Approved for entry into archive by Nuzia Santos ([email protected]) on 2015-02-19T14:49:27Z (GMT) No. of bitstreams: 1 2014_084.pdf: 1442525 bytes, checksum: 0ea3f08436712815ef93363ee3beae9e (MD5)Approved for entry into archive by Nuzia Santos ([email protected]) on 2015-02-19T14:55:14Z (GMT) No. of bitstreams: 1 2014_084.pdf: 1442525 bytes, checksum: 0ea3f08436712815ef93363ee3beae9e (MD5)Made available in DSpace on 2015-02-19T14:55:14Z (GMT). No. of bitstreams: 1 2014_084.pdf: 1442525 bytes, checksum: 0ea3f08436712815ef93363ee3beae9e (MD5) Previous issue date: 2014Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunopatologia. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunopatologia. Uberlândia, MG, Brasil.Fundação Oswaldo Cruz. Centro de Pesquisa René Rachou. Laboratório de Doença de Chagas. Belo Horizonte, MG, Brasil.Universidade Federal de Uberlândia. Faculdade de Medicina. Departamento de Ginecologia e Obstetricia. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciencias Biomédicas. Laboratório de Imunopatologia. Uberlândia, MG, Brasil.Universidade Federal de Uberlândia. Instituto de Ciências Biomédicas. Laboratório de Imunofisiologia da Reprodução. Uberlândia, MG, Brasil.BACKGROUND: Although Toxoplasma gondii infection is normally asymptomatic, severe cases of toxoplasmosis may occur in immunosuppressed patients or congenitally infected newborns. When a fetal infection is established, the recommended treatment is a combination of pyrimethamine, sulfadiazine and folinic acid (PSA). The aim of the present study was to evaluate the efficacy of azithromycin to control T. gondii infection in human villous explants. METHODS: Cultures of third trimester human villous explants were infected with T. gondii and simultaneously treated with either PSA or azithromycin. Proliferation of T. gondii, as well as production of cytokines and hormones by chorionic villous explants, was analyzed. RESULTS: Treatment with either azithromycin or PSA was able to control T. gondii infection in villous explants. After azithromycin or PSA treatment, TNF-α, IL-17A or TGF-β1 levels secreted by infected villous explants did not present significant differences. However, PSA-treated villous explants had decreased levels of IL-10 and increased IL-12 levels, while treatment with azithromycin increased production of IL-6. Additionally, T. gondii-infected villous explants increased secretion of estradiol, progesterone and HCG+β, while treatments with azithromycin or PSA reduced secretion of these hormones concurrently with decrease of parasite load. CONCLUSIONS: In conclusion, these results suggest that azithromycin may be defined as an effective alternative drug to control T. gondii infection at the fetal-maternal interfac