Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a

Challenging Visual Search TaskJames Mardell, Mark Witkowski and Robert Spence

Gaze Behaviour During a Challenging Visual Search Task / 25

Outline

Scenario

Idea

Experiment

Results

2

Gaze Behaviour During a Challenging Visual Search Task / 25

Scenario

3

Wilderness Search and Rescue

Gaze Behaviour During a Challenging Visual Search Task / 25

Aerial PhotographySimulated live imagery from an Unmanned Aerial Vehicle (UAV)

4

Gaze Behaviour During a Challenging Visual Search Task / 25

Inconspicuous Targets5

Gaze Behaviour During a Challenging Visual Search Task / 25

Inconspicuous Targets5

2

1

1

Gaze Behaviour During a Challenging Visual Search Task / 256

UAV Camera View

Gaze Behaviour During a Challenging Visual Search Task / 25

Idea

8

Static Segmentation of Aerial Photography

Gaze Behaviour During a Challenging Visual Search Task / 259

Segmentation

Moving

Segmentation

Degree 1

Segmentation

Degree 4

Gaze Behaviour During a Challenging Visual Search Task / 259

Segmentation

Moving

Segmentation

Degree 1

Segmentation

Degree 4

Gaze Behaviour During a Challenging Visual Search Task / 259

Segmentation

Moving

Segmentation

Degree 1

Segmentation

Degree 4

Gaze Behaviour During a Challenging Visual Search Task / 25

Rapid Serial Visual Presentation

10

Segmentation Degree Tile Duration (ms) Tile Width (Visual Angle °)

1 3,878 22.6

2 970 11.4

3 431 7.6

4 242 5.7

5 155 4.6

6 108 3.8

Segmentation Degree 1

Segmentation Degree 2

Segmentation Degree 3

Gaze Behaviour During a Challenging Visual Search Task / 25

Experiment

14

Identifying Targets

Gaze Behaviour During a Challenging Visual Search Task / 25

Experimental Setup15

Gaze Behaviour During a Challenging Visual Search Task / 25

Experiment

16

24 Subjects

6 Trials per Subject

520,300 Eye Movement Records

Gaze Behaviour During a Challenging Visual Search Task / 25

Results

17

Identification and Eye Movements

Gaze Behaviour During a Challenging Visual Search Task / 25

Target Identification Results18

Gaze Behaviour During a Challenging Visual Search Task / 25

Eye Movements

Constancy of Perception?

19

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Gaze Behaviour During a Challenging Visual Search Task / 25

Segmentation Degree 1 Segmentation Degree 6

Eye Movements

23

Gaze Behaviour During a Challenging Visual Search Task / 25

Constancy of Perception

24

Gaze Behaviour During a Challenging Visual Search Task / 2525

QuestionsJames Mardell ∙ @keot ∙ http://keot.co.uk/ ∙ james.mardell@imperial.ac.uk

Gaze Behaviour During a Challenging Visual Search Task / 2525

QuestionsJames Mardell ∙ @keot ∙ http://keot.co.uk/ ∙ james.mardell@imperial.ac.uk