Feature Integration Theory

1
Feature Integration Theory

• Preattentive Stage perception of primitives -
  orientation, contours, curvature, color and
  movement

2
Feature Integration Theory

• Preattentive Stage perception of primitives -
  texture differences produce pop-out boundaries

3
Feature Integration Theory

• Preattentive Stage perception of primitives -
  visual search method - The Os pop-out in these
  pictures - The Os and Vs do not share primitive
  features

4
Feature Integration Theory

• Preattentive Stage perception of primitives -
  visual search method - The Rs do not pop-out,
  search takes longer when there are more
  distractors - P and R share primitive features

5
Feature Integration Theory

• Preattentive Stage perception of primitives -
  these are perceived before the object is
  recognized
• Curvature
• Tilt
• Line ends
• Movement
• Color
• Brightness
• Direction of illumination

6
Feature Integration Theory

• Focused Attention Stage primitive features are
  integrated, the object is recognized and
  associated with information in memory-attention
  is important in doing this

7
Object Recognition by Components

• Object recognition by volumetric primitives,
  called geons (geometric ions)

8
Object Recognition by Components

• View invariance geons are perceived from many
  different perspectives and angles
• Discriminability geons are well-discriminated
  from each other, at many angles
• Geons are resistant to visual noise

9
Object Recognition by Components

• Geons are resistant to visual noise

10
Object Recognition by Components

• Componential Recovery Perception of an object
  based on a subset of its geons.

11
Object Recognition by Components

• Geons and 3D Modeling