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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Let s magnify the critical bit

Let’s magnify the critical bit.


Let s magnify the critical bit

Edges are important


Let s magnify the critical bit

Inferring edges

Subjective contours


Let s magnify the critical bit

Read me…...


Let s magnify the critical bit

Shadow letters are surprisingly easy to read.


Let s magnify the critical bit

Minimal shadow can give you faces

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


Let s magnify the critical bit

If you obey the rules

inversion

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


Let s magnify the critical bit

What is the problem here?

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


Let s magnify the critical bit

Weird color is no problem

But shadow must be darker

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


Let s magnify the critical bit

WHAT IS THIS?


Let s magnify the critical bit

Does this seem likely?


Let s magnify the critical bit

This seems more likely

“Good continuation”


Let s magnify the critical bit

Depth Cues

From 2D-3D


Let s magnify the critical bit

Occlusion


Let s magnify the critical bit

Is this likely?


Let s magnify the critical bit

Size


Let s magnify the critical bit

Texture


Let s magnify the critical bit

Relative position (height in field)


Let s magnify the critical bit

Here is why it works


Let s magnify the critical bit

You don’t need to recognize the objects


Let s magnify the critical bit

Areal Perspective (haze)

The misty mountains far away


Let s magnify the critical bit

Linear Perspective

Vanishing point


Let s magnify the critical bit

Linear Perspective?

Where is the vanishing point?


Let s magnify the critical bit

Linear Perspective?

These local bits don’t add up


Let s magnify the critical bit

Linear Perspective?

These add up…ambiguously


Let s magnify the critical bit

Shadows

But where is the sun?


Let s magnify the critical bit

And let’s not forget

Stereopsis,

Vergence,

and

Motion parallax


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