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Hybrid vision activities at NASA Johnson Space CenterNASA's Johnson Space Center in Houston, Texas, is active in several aspects of hybrid image processing. (The term hybrid image processing refers to a system that combines digital and photonic processing). The major thrusts are autonomous space operations such as planetary landing, servicing, and rendezvous and docking. By processing images in non-Cartesian geometries to achieve shift invariance to canonical distortions, researchers use certain aspects of the human visual system for machine vision. That technology flow is bidirectional; researchers are investigating the possible utility of video-rate coordinate transformations for human low-vision patients. Man-in-the-loop teleoperations are also supported by the use of video-rate image-coordinate transformations, as researchers plan to use bandwidth compression tailored to the varying spatial acuity of the human operator. Technological elements being developed in the program include upgraded spatial light modulators, real-time coordinate transformations in video imagery, synthetic filters that robustly allow estimation of object pose parameters, convolutionally blurred filters that have continuously selectable invariance to such image changes as magnification and rotation, and optimization of optical correlation done with spatial light modulators that have limited range and couple both phase and amplitude in their response.
Document ID
19900012909
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Juday, Richard D. (NASA Lyndon B. Johnson Space Center Houston, TX, United States)
Date Acquired
September 6, 2013
Publication Date
February 1, 1990
Publication Information
Publication: NASA, Ames Research Center, Vision Science and Technology at NASA: Results of a Workshop
Subject Category
Man/System Technology And Life Support
Accession Number
90N22225
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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