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Contributions in Spatial Vision

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Contributions in Spatial Vision
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Albino-peacockz

Albino-peacockz

File Size: 68Kb

Resolution: 615x416

The white colour of this albino peacock is due to the missing black melanine pigment. T...

Angry smile

Angry smile

File Size: 73Kb

Resolution: 570x570

These face images change between sharp and blurred. When they are sharp, the face on th...

Anthony Hopkins skull
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Anthony Hopkins skull

File Size: 24Kb

Resolution: 412x420

Sir Anthony Hopkins on the right and a skull on the left, or is it Hopkins on the left ...

Aurora-jupiter-uvz

Aurora-jupiter-uvz

File Size: 27Kb

Resolution: 452x455

Saturn's ultraviolet aurora viewed by Hubble Space Telescope. Unlike the Earth, Saturn'...

Aurora-shuttle-loopz

Aurora-shuttle-loopz

File Size: 30Kb

Resolution: 615x439

A view of the Aurora Australis (Southern Lights) from space, around 80 - 120 km above t...

B5

B5

File Size: 88Kb

Resolution: 382x300

Greyscale photo of stone in a natural setting. One of a collection of natural scenes us...

Bar

Bar

File Size: 131Kb

Resolution: 414x410

Greyscale photo of rocky texture. One of a collection of textures useful for research i...

Beenews

Beenews

File Size: 188Kb

Resolution: 570x570

The point of gaze moves between the two reporters. The image is blurred smoothly as t...

Beeonflowers

Beeonflowers

File Size: 267Kb

Resolution: 570x570

Point of gaze moves from the bee, to the left, then back to the bee. The image blurs s...

Big fast3

Big fast3

File Size: 1Kb

Resolution: 62x60

An example of the dynamics of binding global form. At alternation rates around 5Hz, the...

Big slow3

Big slow3

File Size: 1Kb

Resolution: 228x124

An example of the dynamics of binding global form. The two spirals alternate at a rate ...

Big sum

Big sum

File Size: 1Kb

Resolution: 62x61

An example of the dynamics of binding global form. In the sum (or at alternation rates ...

Blairth
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Blairth

File Size: 949Kb

Resolution: 1076x1674

A 'Thatcherised' version of an image of Tony Blair

Box

Box

File Size: 67Kb

Resolution: 1710x1716

test of thumbnail

Bush-kerry

Bush-kerry

File Size: 96Kb

Resolution: 570x570

A PowerPoint file with demonstrations of face adaptation using Bush and Kerry's faces (...

Chaplin

Chaplin

File Size: 118Kb

Resolution: 570x570

This rotating face mask (adapted from Richard Gregory's demo) is filmed from an actual...

Clifford-percep32-p1112fig1

Clifford-percep32-p1112fig1

File Size: 27Kb

Resolution: 819x847

Stimuli showing a range of horizontally-distorted faces, from -1 (contracted face) to 0...

Collishaw percep29 p898
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Collishaw percep29 p898

File Size: 65Kb

Resolution: 570x570

Example of stimuli used to examine patterns of recognition impairment produced by blurr...

Colorient fast

Colorient fast

File Size: 160Kb

Resolution: 400x400

When it works properly, the stimulus should almost look transparent, yet people have no...

Colour and luminance

Colour and luminance

File Size: 59Kb

Resolution: 650x598

Examples of natural colour (NC), colour inverted (CI), luminance inverted (LI) and colo...

Cow 3d
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Cow 3d

File Size: 19Kb

Resolution: 242x349

Construct your own desktop hollow-face illusion! (Note that the cow's face is hollow.) ...

Crater-lake

Crater-lake

File Size: 48Kb

Resolution: 615x308

Crater lake, Oregon, USA, is widely known for its intense blue colour and spectacular v...

Csfchart640x480
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Csfchart640x480

File Size: 341Kb

Resolution: 1333x2000

Contrast sensitivity is a measure of the limit of visibility for low contrast patterns ...

Dakin and bex 1 2 4 fig01

Dakin and bex 1 2 4 fig01

File Size: 29Kb

Resolution: 640x315

A rotational Glass pattern formed from spatially narrow-band, isotropic Laplacian-of-G...

Danrettocort

Danrettocort

File Size: 20Kb

Resolution: 288x279

Log polar transformed face

De valois

De valois

File Size: 50Kb

Resolution: 570x570

A demo of the motion induced spatial shift.

Diffuse shading and occlusions

Diffuse shading and occlusions

File Size: 118Kb

Resolution: 570x570

The visual perception of three-dimensional form: diffuse shading and occlusion

Diffuse shading highlights and occlusions

Diffuse shading highlights and occlusions

File Size: 123Kb

Resolution: 570x570

The visual perception of three-dimensional form: diffuse shading, highlights and occlus...

Eccentricity animation - full size
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Eccentricity animation - full size

File Size: 126Kb

Resolution: 570x570

Gaze direction and emotional expressions. The only stimulus change is the motion of the...

Eit 19970914 0121 304z

Eit 19970914 0121 304z

File Size: 46Kb

Resolution: 455x455

The emission from the 5700C temperature of the surface of the sun gives us our definit...

Fantoni 3 4 4 fig01

Fantoni 3 4 4 fig01

File Size: 48Kb

Resolution: 570x570

Two examples of amodal contour completion behind black occluders: in (a) we perceive a ...

Fantoni 3 4 4 fig02
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Fantoni 3 4 4 fig02

File Size: 73Kb

Resolution: 570x570

A Tse-like demonstration of contour completion. We perceive a worm-like shape: points T...

Fantoni 3 4 4 fig06

Fantoni 3 4 4 fig06

File Size: 47Kb

Resolution: 570x570

Two examples of contour completion. We perceive the grey shapes to carry on as a diamon...

Fantoni 3 4 4 fig08

Fantoni 3 4 4 fig08

File Size: 7Kb

Resolution: 400x354

Two examples of contour completion. We perceive the white shapes in a and b to carry on...

Fantoni 3 4 4 fig16

Fantoni 3 4 4 fig16

File Size: 50Kb

Resolution: 570x570

Two examples of contour completion. We perceive the grey shapes behind the black occlud...

Fantoni 3 4 4 fig19

Fantoni 3 4 4 fig19

File Size: 46Kb

Resolution: 570x570

An example of contour completion. We perceive the grey snail-shell shape behind the bla...

Fantoni 3 4 4 fig20

Fantoni 3 4 4 fig20

File Size: 48Kb

Resolution: 570x570

An example of contour completion. We perceive the grey heterogeneous arcs behind the bl...

Fantoni 3 4 4 fig21

Fantoni 3 4 4 fig21

File Size: 47Kb

Resolution: 570x570

An example of contour completion. We perceive the grey arcs behind the black occluder (...

Fatimafig

Fatimafig

File Size: 44Kb

Resolution: 570x570

Look at array on left. Now look at array on right. The two look similar when you look a...

Fig1 6 improved

Fig1 6 improved

File Size: 499Kb

Resolution: 2104x2288

Computer generated 3D objects used in studies of 'Mental Rotation'.

Fig1jov 1 2 7
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Fig1jov 1 2 7

File Size: 47Kb

Resolution: 600x169

Examples of test stimuli with a red fixation mark at the most peripheral placement (10...

Fleming 3 5 3 fig01

Fleming 3 5 3 fig01

File Size: 79Kb

Resolution: 640x609

The same sphere shown in two different scenes in (a) and (b). Because of the change of ...

Fleming 3 5 3 fig02

Fleming 3 5 3 fig02

File Size: 55Kb

Resolution: 570x570

The sphere in (a) was rendered under point-source illumination, while the spheres in (b...

Fleming 3 5 3 fig03

Fleming 3 5 3 fig03

File Size: 79Kb

Resolution: 570x570

Illumination at a point in space is defined as the set of rays that converge on that po...

Fleming 3 5 3 fig05

Fleming 3 5 3 fig05

File Size: 68Kb

Resolution: 570x570

The negligible effects of context on perceived gloss. (a) is shown against its true bac...

Fleming 3 5 3 fig07

Fleming 3 5 3 fig07

File Size: 82Kb

Resolution: 570x570

The three parameters of the Ward reflectance model. Diffuse reflectance specifies the p...

Folded surface percep vol 30

Folded surface percep vol 30

File Size: 98Kb

Resolution: 570x570

When a textured surface is folded, the texture appears visually different: a) correspon...

Form 1

Form 1

File Size: 92Kb

Resolution: 504x504

The angle subtense of these objects appear different. Go to 'additional images' to see...

Frequence from jfaubert

Frequence from jfaubert

File Size: 139Kb

Resolution: 570x570

Effect of spatial frequecy (SF) filtering on face recognition. Middle SFs work best for...

Ground attachment bias

Ground attachment bias

File Size: 80Kb

Resolution: 490x360

Cylinders appear to be of unequal size because of bias to interpret objects attached to...

Hayhoe aivar 5 3 3 fig02

Hayhoe aivar 5 3 3 fig02

File Size: 6646Kb

Resolution: 350x523

Views of the Virtual Research V8 helmet (top) and the ASL Series 501 eye-tracker integr...

Highlights and occlusions

Highlights and occlusions

File Size: 56Kb

Resolution: 570x570

The visual perception of three-dimensional form: highlights and occlusion

Highlights only

Highlights only

File Size: 40Kb

Resolution: 570x570

The visual perception of three-dimensional form: highlights only

Holcombe 3 8 4 fig02

Holcombe 3 8 4 fig02

File Size: 53Kb

Resolution: 570x570

A classic display of morphing motion. The grey and black rectangles are perceived to sh...

Holcombe 3 8 4 fig03

Holcombe 3 8 4 fig03

File Size: 48Kb

Resolution: 570x570

A display of morphing motion. The red box morphs from the left and the green rectangle ...

Holcombe 3 8 4 fig04

Holcombe 3 8 4 fig04

File Size: 81Kb

Resolution: 570x570

A display of morphing motion. Observers were more likely to perceive the green line as ...

Holcombe 3 8 4 fig07

Holcombe 3 8 4 fig07

File Size: 20Kb

Resolution: 320x287

In this movie, the appearance of the central grey areas (outlined in red in the static ...

Holcombe 3 8 4 fig08

Holcombe 3 8 4 fig08

File Size: 165Kb

Resolution: 570x570

In this movie, an illusory square is seen to occlude the red square in the occlusion di...

Hollow face illusion
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Hollow face illusion

File Size: 40Kb

Resolution: 1333x1000

The hollow face appears to be the 'right way round', perhaps because we have an expecta...

Impossible contour surface

Impossible contour surface

File Size: 258Kb

Resolution: 662x612

Perceptual bias for seeing surfaces face up can be overridden locally by T-junctions. M...

Inverting contour surface

Inverting contour surface

File Size: 120Kb

Resolution: 648x576

This demonstrates the perceptual bias for seeing surfaces face up rather than down. Pla...

Inverting surface

Inverting surface

File Size: 287Kb

Resolution: 662x576

Most observers see the region under the arrow as concave. This demonstrates the percept...

Kawabe-percep33-p602-fig2

Kawabe-percep33-p602-fig2

File Size: 4Kb

Resolution: 520x520

A Rubin's face/vase pattern composed of shaded disks. Observers often report that the r...

Leaves

Leaves

File Size: 69Kb

Resolution: 570x570

As the chlorophyll in leaves decays in the autumn, the green colour fades and is replac...

Lettersizedemo

Lettersizedemo

File Size: 65Kb

Resolution: 576x576

A demonstration showing how size affects shape - the three objects are identical and ye...

M100-1

M100-1

File Size: 57Kb

Resolution: 288x384

Greyscale frontal photo of male face with a neutral expression. One of a collection of ...

M100-2

M100-2

File Size: 58Kb

Resolution: 288x384

Greyscale frontal photo of male face smiling. One of a collection of faces and objects ...

M100-3

M100-3

File Size: 58Kb

Resolution: 288x384

Greyscale frontal photo of male face with a surprised expression. One of a collection o...

M100-4

M100-4

File Size: 57Kb

Resolution: 288x384

Greyscale frontal photo of male face with a disgusted expression. One of a collection o...

M100-5

M100-5

File Size: 52Kb

Resolution: 288x384

Greyscale frontal photo of male face with a bathing cap covering the hairline. One of a...

M100-6

M100-6

File Size: 138Kb

Resolution: 570x570

Greyscale 3/4 photo of male face with a neutral expression. One of a collection of fac...

M100-7

M100-7

File Size: 129Kb

Resolution: 570x570

Greyscale 3/4 photo of male face smiling. One of a collection of faces and objects use...

Martelli 5 1 6 fig01

Martelli 5 1 6 fig01

File Size: 48Kb

Resolution: 600x749

Effect of context: word and face inferiority effect. (See Extra Info for more details.)

Mckee movshon 3 5 5  fig9

Mckee movshon 3 5 5 fig9

File Size: 16Kb

Resolution: 634x373

Mean locations of the 11 clinically defined categories in the two-factor space. The dia...

Monument of Red Army (Vienna) - Illusion

Monument of Red Army (Vienna) - Illusion

File Size: 41Kb

Resolution: 658x494

They are both the same picture, but one of them appears to be tilted more than the othe...

Motion defined 3D surface

Motion defined 3D surface

File Size: 213Kb

Resolution: 640x490

Play animation to see a 3D surface pop out in depth. Note how the surface quickly disap...

Motion defined square

Motion defined square

File Size: 33Kb

Resolution: 500x310

Play animation to make the square pop out from the background.

Norcia 2 2 1 fig02

Norcia 2 2 1 fig02

File Size: 17Kb

Resolution: 400x515

Graph showing VEP results when a person is shown just random dot patterns and when they...

Occlusion only

Occlusion only

File Size: 40Kb

Resolution: 570x570

The visual perception of three-dimensional form: occlusion only

Oranges-ronda-spainz

Oranges-ronda-spainz

File Size: 42Kb

Resolution: 333x455

Bitter orange oranges growing on a patio in Ronda, Spain. We see an orange as orange be...

Peacock-spreadz

Peacock-spreadz

File Size: 48Kb

Resolution: 326x455

Peacock spreading its feathers. Every branch carries a series of bright coloured spots,...

Percep 29 p243 fig 1

Percep 29 p243 fig 1

File Size: 40Kb

Resolution: 454x442

Stimuli used to discover how efficient humans are at detecting a search target amongst ...

Percep 29 p35 fig3

Percep 29 p35 fig3

File Size: 36Kb

Resolution: 570x570

Stimuli showing that humans are better at recognising asymmetry in biological images/si...

Portilloth

Portilloth

File Size: 287Kb

Resolution: 634x761

'Thatcherised' version of an image of Michael Portillo

Prescottth
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Prescottth

File Size: 161Kb

Resolution: 472x555

'Thatcherised' version of an image of John Prescott

Purcell vol 25 p1093

Purcell vol 25 p1093

File Size: 100Kb

Resolution: 570x570

Angry faces (top left for male, bottom right for female) tend to 'pop out' of crowds of...

Purcell vol 25 p1094 smaller

Purcell vol 25 p1094 smaller

File Size: 115Kb

Resolution: 570x570

Images of male and female faces, displaying both anger (left) and happiness (right).

Rhodes-percep30-p615-fig1

Rhodes-percep30-p615-fig1

File Size: 81Kb

Resolution: 570x570

Averageness and symmetry are attractive in Western faces and are good candidates for bi...

Rolling Eyes
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Rolling Eyes

File Size: 52Kb

Resolution: 1621x1163

A version of the hollow mask illusion with added rolling eyes and nose ring.

Rotating frans
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Rotating frans

File Size: 162Kb

Resolution: 570x570

This movie is a dynamic version of the Thatcher or Thompson Illusion. Just this time wi...

Rotating Maggie
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Rotating Maggie

File Size: 6Kb

Resolution: 182x182

The Thatcher Illusion

Rotation

Rotation

File Size: 95Kb

Resolution: 570x570

The bars in the central fields have the same absolute orientation, but their orientatio...

Rousselet 4 1 2 fig01

Rousselet 4 1 2 fig01

File Size: 95Kb

Resolution: 600x557

Examples of human, animal, and neutral non-target pictures used in human face and anima...

Russell percep32 p1093to1107 fig1

Russell percep32 p1093to1107 fig1

File Size: 83Kb

Resolution: 570x570

From left to right are examples of luminance-difference decreased, unchanged and lumina...

Sfsweep

Sfsweep

File Size: 12Kb

Resolution: 512x512

Spatial frequency increases (logarithmically) from left to right. Contrast increases fr...

Shore percep29 p612

Shore percep29 p612

File Size: 76Kb

Resolution: 570x570

Diagrams of faces demonstrating the difficulty in identifying faces when they have diff...

Size constancy corridor

Size constancy corridor

File Size: 58Kb

Resolution: 401x501

Size constancy. In the first picture, two men are in a corridor, but which is the bigg...

Size-contrast illusion with coins

Size-contrast illusion with coins

File Size: 54Kb

Resolution: 960x720

The size-contrast (Titchner/Ebbinghaus) illusion is a powerful illusion of both size an...

Smilieth

Smilieth

File Size: 704Kb

Resolution: 1159x1347

'Thatcherised' version of an image of Carol Smillie

Spain---mediteranean-01z

Spain---mediteranean-01z

File Size: 67Kb

Resolution: 615x394

The Mediterranean Sea off the coast of Southwest Spain. The sea is vibrant blue because...

Symmetryexample1

Symmetryexample1

File Size: 68Kb

Resolution: 460x345

An example from a series of symmetry images in PowerPoint format. Click on 'additional ...

test

test

File Size: 67Kb

Resolution: 1710x1716

box

Texgrat

Texgrat

File Size: 76Kb

Resolution: 576x432

Contrast sensitivity function for texture perception. This grating varies in texture. ...

Texsweep

Texsweep

File Size: 98Kb

Resolution: 570x570

2nd-order sweep grating. The modulator, shown above the stimulus, increases in spatial...

Texture and occlusions

Texture and occlusions

File Size: 311Kb

Resolution: 570x570

The visual perception of three-dimensional form: texture and occlusion

Texture diffuse shading and occlusions

Texture diffuse shading and occlusions

File Size: 323Kb

Resolution: 570x570

The visual perception of three-dimensional form: texture, diffuse shading and occlusion

The kinetic depth effect

The kinetic depth effect

File Size: 25Kb

Resolution: 432x396

Play animation to see the object pop out in depth.

The Perception of Visual Objects
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The Perception of Visual Objects

File Size: 198Kb

Resolution: 570x570

Object recognition and higher-order visual processing. (Click on a blue bubble to take ...

Tilt illusion

Tilt illusion

File Size: 22Kb

Resolution: 224x215

Tilt illusion

Tjan-percep30-p125fig1

Tjan-percep30-p125fig1

File Size: 59Kb

Resolution: 588x443

On looking towards the front of the church, the back panels of the pews appear to lean ...

Valentin percep28 p819 fig2

Valentin percep28 p819 fig2

File Size: 18Kb

Resolution: 230x240

Greyscale photo of female face smiling from a frontal view. The version in 'additional ...

Visage6f1 from jfaubert

Visage6f1 from jfaubert

File Size: 132Kb

Resolution: 570x570

Effect of spatial frequecy (SF) filtering on face recognition. Middle SFs work best for...

Walker-percep-32-p1120-fig1

Walker-percep-32-p1120-fig1

File Size: 81Kb

Resolution: 570x570

A continuum of morph faces produced by image averaging of an East Asian and Caucasian f...

Wave-adapt50

Wave-adapt50

File Size: 88Kb

Resolution: 570x570

(See weblink for interactive version. You could use the 2nd pic in additional images to...

Wb1

Wb1

File Size: 76Kb

Resolution: 382x299

Greyscale photo of bridge against clouded sky. One of a collection of natural scenes us...