Iris biometrics is a phenotypic biometric trait that has proven to be agnostic to human natural physiological changes.Research on iris biometrics has progressed tremendously,partly due to publicly available iris datab...Iris biometrics is a phenotypic biometric trait that has proven to be agnostic to human natural physiological changes.Research on iris biometrics has progressed tremendously,partly due to publicly available iris databases.Various databases have been available to researchers that address pressing iris biometric challenges such as constraint,mobile,multispectral,synthetics,long-distance,contact lenses,liveness detection,etc.However,these databases mostly contain subjects of Caucasian and Asian docents with very few Africans.Despite many investigative studies on racial bias in face biometrics,very few studies on iris biometrics have been published,mainly due to the lack of racially diverse large-scale databases containing sufficient iris samples of Africans in the public domain.Furthermore,most of these databases contain a relatively small number of subjects and labelled images.This paper proposes a large-scale African database named Chinese Academy of Sciences Institute of Automation(CASIA)-Iris-Africa that can be used as a complementary database for the iris recognition community to mediate the effect of racial biases on Africans.The database contains 28717 images of 1023 African subjects(2046 iris classes)with age,gender,and ethnicity attributes that can be useful in demographically sensitive studies of Africans.Sets of specific application protocols are incorporated with the database to ensure the database’s variability and scalability.Performance results of some open-source state-of-the-art(SOTA)algorithms on the database are presented,which will serve as baseline performances.The relatively poor performances of the baseline algorithms on the proposed database despite better performance on other databases prove that racial biases exist in these iris recognition algorithms.展开更多
《刚果有限责任公司》是刚果(金)重要作家In Koli Jean Bofane的代表作之一。无论从形式还是从内容看,该作品中有关中国的因素在数量和份量上都极为突出。因此,研究其中的中国形象既有坚实的文本基础,又有突出的典型意义。通过流浪少年...《刚果有限责任公司》是刚果(金)重要作家In Koli Jean Bofane的代表作之一。无论从形式还是从内容看,该作品中有关中国的因素在数量和份量上都极为突出。因此,研究其中的中国形象既有坚实的文本基础,又有突出的典型意义。通过流浪少年“革命”事件、瑞士纯水计划、“光盘事件”、日常生活中两个主人公,即刚果小伙伊苏康伽和中国小伙张侠的所思所感、交往互动,波凡让我们看到了一个兼具刚果民众心中的政治顾问、伊苏康伽信任的经济合作伙伴、互怜互重的朋友等多重身份的中国形象。展开更多
文摘Iris biometrics is a phenotypic biometric trait that has proven to be agnostic to human natural physiological changes.Research on iris biometrics has progressed tremendously,partly due to publicly available iris databases.Various databases have been available to researchers that address pressing iris biometric challenges such as constraint,mobile,multispectral,synthetics,long-distance,contact lenses,liveness detection,etc.However,these databases mostly contain subjects of Caucasian and Asian docents with very few Africans.Despite many investigative studies on racial bias in face biometrics,very few studies on iris biometrics have been published,mainly due to the lack of racially diverse large-scale databases containing sufficient iris samples of Africans in the public domain.Furthermore,most of these databases contain a relatively small number of subjects and labelled images.This paper proposes a large-scale African database named Chinese Academy of Sciences Institute of Automation(CASIA)-Iris-Africa that can be used as a complementary database for the iris recognition community to mediate the effect of racial biases on Africans.The database contains 28717 images of 1023 African subjects(2046 iris classes)with age,gender,and ethnicity attributes that can be useful in demographically sensitive studies of Africans.Sets of specific application protocols are incorporated with the database to ensure the database’s variability and scalability.Performance results of some open-source state-of-the-art(SOTA)algorithms on the database are presented,which will serve as baseline performances.The relatively poor performances of the baseline algorithms on the proposed database despite better performance on other databases prove that racial biases exist in these iris recognition algorithms.
文摘《刚果有限责任公司》是刚果(金)重要作家In Koli Jean Bofane的代表作之一。无论从形式还是从内容看,该作品中有关中国的因素在数量和份量上都极为突出。因此,研究其中的中国形象既有坚实的文本基础,又有突出的典型意义。通过流浪少年“革命”事件、瑞士纯水计划、“光盘事件”、日常生活中两个主人公,即刚果小伙伊苏康伽和中国小伙张侠的所思所感、交往互动,波凡让我们看到了一个兼具刚果民众心中的政治顾问、伊苏康伽信任的经济合作伙伴、互怜互重的朋友等多重身份的中国形象。
