نتایج جستجو برای: geometrical figures

تعداد نتایج: 71847  

2013
Peter Veto Serge Thill Paul Hemeren

Based on the unique traits of biological motion perception, the existence of a “life detector”, a special sensitivity to perceiving motion patterns typical for animals, seems to be plausible (Johnson, 2006). Showing motion displays upsidedown or with changes in global structure is known to disturb processing in different ways, but not much is known yet about how inversion affects attention and ...

Journal: :Bulletin du Centre d’études médiévales d’Auxerre 2007

Journal: :Journal of neurophysiology 1995
L Fadiga L Fogassi G Pavesi G Rizzolatti

1. We stimulated the motor cortex of normal subjects (transcranial magnetic stimulation) while they 1) observed an experimenter grasping 3D-objects, 2) looked at the same 3D-objects, 3) observed an experimenter tracing geometrical figures in the air with his arm, and 4) detected the dimming of a light. Motor evoked potentials (MEPs) were recorded from hand muscles. 2. We found that MEPs signifi...

Journal: :Perception & psychophysics 2000
F Kelly S Grossberg

This article develops the FACADE theory of three-dimensional (3-D) vision to simulate data concerning how two-dimensional pictures give rise to 3-D percepts of occluded and occluding surfaces. The theory suggests how geometrical and contrastive properties of an image can either cooperate or compete when forming the boundary and surface representations that subserve conscious visual percepts. Sp...

2002
Hiroshi Shimanuki Jien Kato Toyohide Watanabe

This paper proposes a novel approach to constituting all the feasible ways of folding, based on crease infomation obtained from an image of illustrations of general origami drill books. Since crease information from 2D plane figures is superficial and incomplete, how to only generate all the feasible ways is a problem. This paper deals with this subject. Origami operations can be classified int...

Journal: :Journal of vision 2008
Yumiko Otsuka Yuka Yamazaki Yukuo Konishi So Kanazawa Masami K Yamaguchi Branka Spehar

Most developmental studies consistently show that sensitivity to purely pictorial cues to perceptual organization emerges around 6-7 months of age (e.g. B. I. Bertenthal, J. J. Campos, & M. M. Haith, 1980). Here, we show evidence for an early emergence of visual completion using purely static two-dimensional pictorial information. By using preferential looking technique, we examined whether 3-4...

2001
F. Blais

This paper presents the most up-to date experimental results obtained during the integration of a 3-D Laser Scanner Tracking System and the current Space Vision System used by NASA. Half scale models of modules of the Space Station Freedom have been built for this demonstration and comparison between the current method using video cameras and the Laser Scanner System are presented. The variable...

2013
A Vahid A Moosavi

We report different morphologies of nanodroplets over various topographical features of the supporting substrates. The effects of different parameters such as the profile of the disjoining pressure, droplet size and the geometrical parameters are studied and discussed. Also, the effects of a coating layer on the surface of the substrate are determined. It is demonstrated that the nanodroplets a...

2008
Jianhua Tong Craig A Simmons Yu Sun

This paper presents a method for precision patterning of polydimethylsiloxane (PDMS) membranes based on parylene C lift-off. The process permits the construction of PDMS membranes either with a highly flat, uniform top surface or with a controlled curvature. Effects of varying processing parameters on the geometrical characteristics of the PDMS membranes are described. The paper also demonstrat...

2013
QIUFENG LI XUEJUAN YANG PAN HUANG YIN LIAO

Because of the need of rapid detection of internal defects and embedded object in concrete structures, a ultrasonic detecting method with linear array transducers is presented here, which is the high-resolution and efficient imaging technique for concrete materials by combining with synthetic aperture focusing technique (SAFT). At first, simulation data of array detection are processed to be am...

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