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Let’s magnify the critical bit.

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Let’s magnify the critical bit. - PowerPoint PPT Presentation


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Let’s magnify the critical bit. Edges are important. Inferring edges. Subjective contours. Read me…. Shadow letters are surprisingly easy to read. Minimal shadow can give you faces. http://www.techfak.uni-bielefeld.de/ags/ni/projects/cognitivrobot/eyetrack/eye_concept.html.

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Presentation Transcript
slide4

Inferring edges

Subjective contours

slide12

Minimal shadow can give you faces

http://www.techfak.uni-bielefeld.de/ags/ni/projects/cognitivrobot/eyetrack/eye_concept.html

slide13

If you obey the rules

inversion

http://www.techfak.uni-bielefeld.de/ags/ni/projects/cognitivrobot/eyetrack/eye_concept.html

slide14

What is the problem here?

http://www.techfak.uni-bielefeld.de/ags/ni/projects/cognitivrobot/eyetrack/eye_concept.html

slide15

Weird color is no problem

But shadow must be darker

http://www.techfak.uni-bielefeld.de/ags/ni/projects/cognitivrobot/eyetrack/eye_concept.html

slide23

This seems more likely

“Good continuation”

slide24

Depth Cues

From 2D-3D

slide32

Areal Perspective (haze)

The misty mountains far away

slide33

Linear Perspective

Vanishing point

slide34

Linear Perspective?

Where is the vanishing point?

slide35

Linear Perspective?

These local bits don’t add up

slide36

Linear Perspective?

These add up…ambiguously

slide37

Shadows

But where is the sun?

slide38

And let’s not forget

Stereopsis,

Vergence,

and

Motion parallax

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