Visual Attention(Day 4)

25 Aug 2016

Attention Types

Bottom Up Cues Top Down Cues
Automatic Influenced by what you know.
Known as saliency Known as endogenous or voluntary
Reflexive in nature motivation based or expectations. Involves context as well.

Guided Search Model.

  1. Involves both bottom up and top down feature maps.
  2. Bottom up has involuntary influence on the attention. eg: emergency bell during a lecture.

Basic Features for Saliency

Overt Attention Covert Attention
> Direct the eyes to the region of Interest > direct eyes to ROI without moving your eyes

Read about Scale Spaces Theory in detail.