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Research Overview. Graduate Students Joseph Amati, Psychology Yonqiang Cao, Computer Science Rick Goldberg , Computer Science Sandra Polifroni, Computer Science Adam Sachs , Mathematics Lily Velisavljevic , Psychology. Post Doctoral Fellows Fadi Dornaika, Computer Science
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Research Overview York University
Graduate Students Joseph Amati, Psychology Yonqiang Cao, Computer Science Rick Goldberg , Computer Science Sandra Polifroni, Computer Science Adam Sachs , Mathematics Lily Velisavljevic , Psychology Post Doctoral Fellows Fadi Dornaika, Computer Science Rob Reeves, Electrical Engineering Research Associates Ronen Goldstein, Computer Science Bob Hou, Physics Visiting Scientists Prof. Amnon Krupnik, Technion, Israel Research Team York University
Projects • Psychophysics and computation of edge detection • Reconstruction of images from contours • Perceptual grouping of contours • Classification of contours in natural images • Perceptual processing of cast and attached shadows • Application: Contour-based image editing • Human attention and eye movements • Application: Attentive panoramic sensing (with Dalsa Inc.) • Perception of surface attitude from texture • Perception of three-dimensional geometry of transparent surfaces • Statistical frameworks for remote-sensed data fusion • Application: Enhanced/Synthetic Vision Systems for aviation (with CAE, UTIAS, NRC FRL) • Computational modeling of human stereopsis (with L. Wilcox, York CVR) York University
Accurate, Complete, Invertible Edge Representations York University
Empirical estimation of statistical models for contour grouping York University
Relative Inferential Power of Grouping Cues 100.00% contrast 10.00% good cont % Errors proximity 1.00% all cues .10% 1 2 3 4 5 6 7 8 9 10 Number of local hypotheses York University
Foveated Panoramic Sensing Panoramic Foveal York University
Fusing Foveal and Panoramic Video York University
Enhanced/Synthetic Vision for Aviation York University
Intelligent fusion of remote-sensed data York University
Synthetic texture maps for ESVS (Ricciardi, 2000) York University
How does the perception of surface attitude from texture depend upon texture properties? Multi-scale random rectilinear (1D 1/f) Multi-scale random disks Multi-scale regular rectilinear Multi-scale random (2D 1/f) Single-scale random (2D bandpass) Single-scale random rectilinear (1D bandpass) Single-scale random disks Single-scale regular rectilinear York University
Scale dependence of 3D surface judgement Multi-scale random disks Slant: 40°, Tilt: 90° Simulated distance: 26 m Multi-scale random disks Slant: 40°, Tilt: 90° Simulated distance: 228 m York University