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Gaze Behaviour During a
Challenging Visual Search TaskJames Mardell, Mark Witkowski and Robert Spence
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Outline
Scenario
Idea
Experiment
Results
2
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Scenario
3
Wilderness Search and Rescue
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Aerial PhotographySimulated live imagery from an Unmanned Aerial Vehicle (UAV)
4
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Inconspicuous Targets5
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Inconspicuous Targets5
2
1
1
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UAV Camera View
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Idea
8
Static Segmentation of Aerial Photography
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Segmentation
Moving
Segmentation
Degree 1
Segmentation
Degree 4
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Segmentation
Moving
Segmentation
Degree 1
Segmentation
Degree 4
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Segmentation
Moving
Segmentation
Degree 1
Segmentation
Degree 4
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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
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Experiment
14
Identifying Targets
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Experimental Setup15
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Experiment
16
24 Subjects
6 Trials per Subject
520,300 Eye Movement Records
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Results
17
Identification and Eye Movements
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Target Identification Results18
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Eye Movements
Constancy of Perception?
19
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Segmentation Degree 1 Segmentation Degree 6
Eye Movements
23
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Constancy of Perception
24
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QuestionsJames Mardell ∙ @keot ∙ http://keot.co.uk/ ∙ [email protected]
Gaze Behaviour During a Challenging Visual Search Task / 2525
QuestionsJames Mardell ∙ @keot ∙ http://keot.co.uk/ ∙ [email protected]