Nowadays the surface texturing has been widely recognized as a usable capability to improve the tribological systems. In this paper, ultrasonic assisted turning (UAT) isperformed to create the micro textures on the flat faces. Micro surface texturing ismade on the Al7075-T6 by the UAT in the face turning process. Then, the influences of cutting speed feed, vibration direction and vibration ampl...

Abstract: Face recognition under varying illumination is a challenging task. This study proposes a modified version of local directional patterns (LDP), eight LDP (ELDP), to produce an illumination insensitive representation of an input face image. The proposed ELDP code scheme uses Kirsch compass masks to compute the edge responses of a pixel’s neighbourhood. Then, ELDP uses all the directiona...

This paper describes the development of “MaskBot 2i” (codenamed: Kabuto), a robotic head designed for research into Human-Robot-Interactions. The uniqueness of our new robotic head is that the appearance of its face can be alter on-the-fly. Different faces can be projected onto the active head system. The head is fully active with a 3-DOF neck, with support for biannual hearing as well as video...

1 Three-dimensional shape and two-dimensional surface reeectance contributions to face recognition: Abstract We measured the three-dimensional shape and two-dimensional surface reeectance contributions to human recognition of faces across viewpoint. We rst divided laser scans of human heads into their two-and three-dimensional components. Next, we created shape-normalized faces by morphing the ...

The question whether the recognition of individual faces is mandatory or task-dependent is still controversial. We employed the N250r component of the event-related potential as a marker of the activation of representations of facial identity in visual memory, in order to find out whether identity-related information from faces is encoded and maintained even when facial identity is task-irrelev...

due to urbanization and consequent environmental problems in iran, many people have been interested in improving the weather quality. lack of information about health risks as a result of pollution is a big obstacle which stops policy-making in this regard. the present study examines the type of relationship between low air quality and tehran citizens’ willingness to pay in order to improve wea...

this paper presents a comparison study between the multilayer perceptron (mlp) and radial basis function (rbf) neural networks with supervised learning and back propagation algorithm to track hand gestures. both networks have two output classes which are hand and face. skin is detected by a regional based algorithm in the image, and then networks are applied on video sequences frame by frame in...

3D has become an important modality for face biometrics. The accuracy of a 3D face recognition system depends on a correct registration that aligns the facial surfaces and makes a comparison possible. The best results obtained so far use a one-to-all registration approach, which means each new facial surface is registered to all faces in the gallery, at a great computational cost. We explore th...

We evaluated the validity of remote pure tone audiometric testing conducted from North America on subjects in South Africa. Desktop-sharing computer software was used to control an audiometer in Pretoria from Dallas, and PC-based videoconferencing was employed for clinician and subject communication. Thirty adult subjects were assessed, and the pure tone audiometric thresholds (125-8000 Hz) obt...