Horopter PowerPoint PPT Presentations

Horopter Horopter Definition: The locus of all points in visual space that are imaged on corresponding points in each eye when the eyes are converged at fixed location.

... object, there is no retinal disparity ( F = F' ), i.e., light rays fall on fovea. ... Objects on horopter also has no retinal disparity ( L = R )Radius of ...

... introduced, and eventually diplopia will occur as the limits of Panum's areas are reached. ... rod is moved closer to the subject until diplopia is reached. ...

Physiological Depth Cues. Convergence. small angle of convergence = far away ... at different locations in the visual field move at different speeds depending on ...

Title: Introduction Author: Computer Science Last modified by: ltrask Created Date: 8/25/2001 3:00:53 AM Document presentation format: Overhead Company

Space Perception and Binocular Vision

Title: 1 Author: Last modified by: psy Created Date: 3/8/2003 4:08:39 PM Document presentation format: (4:3) Other titles

Depth Cues. What is a cue. Independent source of ... Stereopsis. Height in visual field. Motion disparity. Occlusion. Relative Size. Relative density ...

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Perception of Depth and Space, Perceptual Constancy and Illusions. 2 ... Determinants of Illusions. Optical-Retinal components ...

... needs advanced knowledge of projective geometry ) 3D Computer Vision and Video Computing This course is a basic introduction to parts of the field of computer ...

Seeing 3D from 2D Images How to make a 2D image appear as 3D! Output is typically 2D Images Yet we want to show a 3D world! How can we do this?

Stereopsis. Our brains interpret crossed and uncrossed disparity as depth ... Stereopsis requires that the brain can encode the two retinal images independently ...

... fixating a spot on window, while a donkey and a rose are outside in the garden. ... This example shows that inappropriate vergence (verging on glass while targets ...

Projective 3D geometry class 4 Multiple View Geometry Slides modified from Marc Pollefeys Comp 290-089

3x3 matrix constructed from R and T (extrinsic only) ... A natural link between the stereo point pair and the extrinsic parameters of the stereo system ...

http://www.ai.sri.com/~luong/research/Meta3DViewer/EpipolarGeo.html ... Correspondence problem: pl and pr correspond to the left and right projections ...

Psyc 351: Depth and Space Perception

Projective 3D geometry class 4 Multiple View Geometry Slides modified from Marc Pollefeys Comp 290-089 * 3. and thus defined by less points 4. On quadric= tangent ...

Information available in the optic flow is sufficient for the perception (direct ... Diplopia (doubleness) Repeat finger experiment. Stereoblindness in Strabismus, ...

Stereo displays do not provide the same visual ... b) ghosting of stereo time multiplexed displays ... d) stereo pairs can't be fused by 10% of the population ...

Figure 8.16 The two images of a stereoscopic photograph. ... D movies are filmed with a stereoscopic camera that records video much like how ...

Stereograms with R and L eye targets spatially super-imposed but still separated ... Stereo-illusions. f. f. Explanation: Interocular differences in Transverse ...

Lenses and Space Perception What happens with anisometropic prescription Example Plano right eye +3.00 -300 left eye Implication for space perception What happens to ...

Defining stereopsis ... Is there a Relationship between Medical Subspecialty and Degree of Stereopsis? ... between degree of stereopsis and medical subspecialty ...

E.g., We can judge how far away a car is based on the size of the retinal image. ... The stereograms were mirror image except a central portion was displaced. ...

where p is the amount of screen parallax for a point, f1, when projected onto a ... Different convergence angles can all have the same screen parallax. ...

Projective 3D geometry class 4 Multiple View Geometry Comp 290-089 Marc Pollefeys * A,B on line AW*=0, BW*=0, 4dof, skew symmetric 6dof, scale -1, rank2 -1 Prove ...

Critical Flicker Frequency ( ~ 60 Hz) Refresh Rate (15 ~ 20 Hz) Brightness / Contrast ... between right and left images very fast (60 Hz, Critical Flicker Frequency) ...

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Cast Shadows. Important cue for height of an object above a plane. An indirect depth cue ... Beneficial: motion parallax, perspective, cast shadows, texture gradients ...

Wallpaper effect. 4. Constraints. The stereo mechanism implements ... D. Leopold and N. K. Logothetis (1996) Activity changes in early visual cortex ...

Critical Flicker Frequency ( ~ 60 Hz) Refresh Rate (15 ~ 20 Hz) Brightness / Contrast ... between right and left images very fast (60 Hz, Critical Flicker Frequency) ...

Depth Perception & 3D Vision Reza Rajimehr 3-D Perception: Inferential leap from image to environment Reducing the problem Depth Surface orientation: Slant and Tilt ...

Title: Multiple View Geometry in Computer Vision Author: pollefey Last modified by: Marc Pollefeys Created Date: 1/7/2003 2:47:06 PM Document presentation format

... the difference in the spacings between the two fingers as seen in each eye ... random black and white pixels which are essentially the same texture in each eye ...

First innovative use of a computer for research in perception. 31. Bela Julesz ... as in wallpaper illusion, period of repetition specifies depth ...

Seeing 3D from 2D Images Ghosting Affected by the amount of light transmitted by the LC shutter in its off state. Phosphor persistence Vertical screen position of the ...

1. Corresponding Retinal Points. 2. Disparity Information and the Brain ... Have diplopia double vision. Crossed Disparity. Uncrossed Disparity. Handouts ...

Unlike other visual development, however, the improvement in stereopsis seems ... that ocular dominance columns develop very early, Chino et al 1997using single ...

Given a two wheeled robot, odometry estimates position and orientation from left ... Assessment and Response System) Exterior - autonomous patrol vehicle. ...

... target will be imaged on non-corresponding points and diplopia may ensue. ... Vergence error smaller than PFA which, therefore, does not generate diplopia. ...

ECE 549/CS 543: COMPUTER VISON LECTURE 16. STEREO I. The Trifocal Tensor (Recap) The Quadrifocal Tensor (Recap) Stereo Reconstruction. The Stereo Fusion Problem ...