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Modeling of Depth Cue Integration in Manual Control TasksPsychophysical research has demonstrated that human observers utilize a variety of visual cues to form a perception of three-dimensional depth. However, most of these studies have utilized a passive judgement paradigm, and failed to consider depth-cue integration as a dynamic and task-specific process. In the current study, we developed and experimentally validated a model of manual control of depth that examines how two potential cues (stereo disparity and relative size) are utilized in both first- and second-order active depth control tasks. We found that stereo disparity plays the dominate role for determining depth position, while relative size dominates perception of depth velocity. Stereo disparity also plays a reduced role when made less salient (i.e., when viewing distance is increased). Manual control models predict that position information is sufficient for first-order control tasks, while velocity information is required to perform a second-order control task. Thus, the rules for depth-cue integration in active control tasks are dependent on both task demands and cue quality.
Document ID
20030055666
Acquisition Source
Ames Research Center
Document Type
Technical Memorandum (TM)
Authors
Sweet, Barbara T. (NASA Ames Research Center Moffett Field, CA, United States)
Kaiser, Mary K. (NASA Ames Research Center Moffett Field, CA, United States)
Davis, Wendy (NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 7, 2013
Publication Date
May 1, 2003
Subject Category
Man/System Technology And Life Support
Report/Patent Number
NAS 1.15:211407
NASA/TM-2003-211407
IH-026
Funding Number(s)
PROJECT: RTOP 727-05-00
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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