An information-theoretic approach to face recognition from face motion manifolds

In this work, we consider face recognition from face motion manifolds (FMMs). The use of the resistor-average distance (RAD) as a dissimilarity measure between densities confined to FMMs is motivated in the proposed information-theoretic approach to modelling face appearance. We introduce a kernel-based algorithm that makes use of the simplicity of the closed-form expression for RAD between two Gaussian densities, while allowing for modelling of complex and nonlinear, but intrinsically low-dimensional manifolds. Additionally, it is shown how geodesically local FMM structure can be modelled, naturally leading to a stochastic algorithm for generalizing to unseen modes of data variation. Recognition performance of our method is demonstrated experimentally and is shown to exceed that of state-of-the-art algorithms. Recognition rate of 98% was achieved on a database of 100 people under varying illumination

An illumination invariant face recognition system for access control using video

Illumination and pose invariance are the most challenging aspects of face recognition. In this paper we describe a fully automatic face recognition system that uses video information to achieve illumination and pose robustness. In the proposed method, highly nonlinear manifolds of face motion are approximated using three Gaussian pose clusters. Pose robustness is achieved by comparing the corresponding pose clusters and probabilistically combining the results to derive a measure of similarity between two manifolds. Illumination is normalized on a per-pose basis. Region-based gamma intensity correction is used to correct for coarse illumination changes, while further refinement is achieved by combining a learnt linear manifold of illumination variation with constraints on face pattern distribution, derived from video. Comparative experimental evaluation is presented and the proposed method is shown to greatly outperform state-of-the-art algorithms. Consistent recognition rates of 94-100% are achieved across dramatic changes in illumination.

The janus face of new media propaganda: The case of Patani neojihadist YouTube warfare and its Islamophobic effect on cyber-actors

Surfing on the Internet 2.0 revolution, Patani 2.0 has allowed Patani neojihadist militants to access new competitive spaces and create their own imagined online community by penetrating new realms of the Internet. This article discusses the use of new media militant propaganda by Patani militants and how it is Janus faced. It further examines how the Patani 2.0 social interaction enabled by social media such as YouTube leads to group cohesion among certain actors and the formation of a collective identity that is clustered around the notions of Muslim victimization and defensive jihad; and how, at the same time, it reinforces antithetical identities and fosters group identity competition, where one religious group is often pitted against another. As a result, the Janus effect of Patani neojihadist YouTube online propaganda, while it primarily seeks to radicalize, also generates a reactionary, often virulent, anti-Muslim response from the movement's critics.

Do cyclic changes in women's face preferences target cues to long-term health?

A shift to prefer more masculine male faces when conception risk is high may be an adaptation for finding mates with good disease resistance. We investigated whether preferences for other facial cues to long-term health also increase when conception is likely. We examined preferences for the faces of men with good health histories and for facial averageness and symmetry, two putative indicators of health during development. Preferences were tested at two points in the menstrual cycle that differed maximally in conception risk. No cyclic changes in preferences were found. We consider implications for the sexual selection of variation in preferences across the menstrual cycle.

The Janus face of schizotypy: enhanced spiritual connection or existential despair?

It has been asserted that schizotypy has a negative relationship with subjective well-being. By employing a multidimensional measure of spiritual well being with 400 British College students we report a more complex relationship. The Multidimensional Inventory for Religious/Spiritual Well-Being and Schizotypal Personality Questionnaire-Brief Version were used and analysis made use of Canonical Correlational Analysis. Results suggested that two distinct relationships emerged between schizotypy and spirituality. First, a positive association between cognitive/perceptual features of schizotypy and spiritual connectedness emerged. Second a more global negative relationship between feelings of spiritual isolation and despair was found for all aspects of schizotypy. These findings challenge the previous literature based on one-dimensional subjective well being measures which have found only a negative relationship. However, the positive association between connectedness and cognitive-perceptual aspects of schizotypy raises import questions about the possible benefit of certain types of schizotypal experience.

Face validity and reliability of a pictorial instrument for assessing fundamental movement skill perceived competence in young children

To determine reliability and face validity of an instrument to assess young children's perceived fundamental movement skill competence.