نتایج جستجو برای: face recognition

تعداد نتایج: 396762  

Dimensionality reduction methods transform or select a low dimensional feature space to efficiently represent the original high dimensional feature space of data. Feature reduction techniques are an important step in many pattern recognition problems in different fields especially in analyzing of high dimensional data. Hyperspectral images are acquired by remote sensors and human face images ar...

2006
Ioannis A. Kakadiaris Georgios Passalis George Toderici Mohammed N. Murtuza Theoharis Theoharis

In this paper, we present a new 3D face recognition approach. Full automation is provided through the use of advanced multi-stage alignment algorithms, resilience to facial expressions by employing a deformable model framework, and invariance to 3D capture devices through suitable preprocessing steps. In addition, scalability in both time and space is achieved by converting 3D facial scans into...

Journal: :IEEE Transactions on Pattern Analysis and Machine Intelligence 2020

1999
John J. Weng Daniel L. Swets

Identifying a human individual from his or her face is one of the most nonin-trusive modalities in biometrics. However, it is also one of the most challenging ones. This chapter discusses why it is challenging and the factors that a practitioner can take advantage of in developing a practical face recognition system. Some major existing approaches are discussed along with some algorithmic consi...

Varying illuminations, especially the side lighting effects in face images, is one of the major obstacles in face recognition systems. Various methods have been presented for face recognition under different lighting conditions witch require previous knowledge about Light source and shadow area. In this paper, a novel approach based on H-minima transform to image segmentation and illumination n...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و 1385

چکیده ندارد.

Journal: :Forensic science international 2015
Pedro Tome Ruben Vera-Rodriguez Julian Fierrez Javier Ortega-Garcia

This paper proposes a functional feature-based approach useful for real forensic caseworks, based on the shape, orientation and size of facial traits, which can be considered as a soft biometric approach. The motivation of this work is to provide a set of facial features, which can be understood by non-experts such as judges and support the work of forensic examiners who, in practice, carry out...

2015
Chang Hong Liu Wenfeng Chen James Ward

Facial expression is a major source of image variation in face images. Linking numerous expressions to the same face can be a huge challenge for face learning and recognition. It remains largely unknown what level of exposure to this image variation is critical for expression-invariant face recognition. We examined this issue in a recognition memory task, where the number of facial expressions ...

Journal: :The Proceedings of the Annual Convention of the Japanese Psychological Association 2014

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