1,721,006 research outputs found
Advances in Vision-Based Human Body Modeling
No full textThis chapter presents a survey of the most recent vision-based human body modeling techniques. It includes sections covering the topics of 3D human body coding standards, motion tracking, recognition and applications. Short summaries of various techniques, including their advantages and disadvantages, are introduced. Although this work is focused on computer vision, some references from computer graphics are also given. Considering that it is impossible to find a method valid for all applications, this chapter intends to give an overview of the current techniques in order to help in the selection of the most suitable method for a certain problem.</jats:p
APPLICATION AND EVALUATION OF A 2D+3D FACE AUTHENTICATION SYSTEM
No full textAn end-to-end face authentication system integrating both 2D color images and depth data is presented in this paper, based on a low-cost sensor capable of real-time acquisition of 3D images and associated color images. Depth data is used for robust face detection, localization and 3D pose estimation, as well as for compensating pose and illumination variations of facial images prior to classification. The proposed algorithms were implemented in a pilot security system for access control in real settings. Experimental results show that when normalized images, depicting upright orientation and frontal lighting, are used for authentication, significantly lower error rates are achieved. Moreover, the combination of color and depth data results in increased authentication accuracy, compared to the use of each modality alone. Index Terms — Face authentication, color and depth images, pose and illumination compensation, anti-spoofing measures 1
A Novel Unobtrusive Face and Hand Geometry Authentication System Based on 2D and 3D Data
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