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Project Report: Reducing Color Rivalry in Imagery for Conjugated Multiple Bandpass Filter Based Stereo EndoscopyA pair of conjugated multiple bandpass filters (CMBF) can be used to create spatially separated pupils in a traditional lens and imaging sensor system allowing for the passive capture of stereo video. This method is especially useful for surgical endoscopy where smaller cameras are needed to provide ample room for manipulating tools while also granting improved visualizations of scene depth. The significant issue in this process is that, due to the complimentary nature of the filters, the colors seen through each filter do not match each other, and also differ from colors as seen under a white illumination source. A color correction model was implemented that included optimized filter selection, such that the degree of necessary post-processing correction was minimized, and a chromatic adaptation transformation that attempted to fix the imaged colors tristimulus indices based on the principle of color constancy. Due to fabrication constraints, only dual bandpass filters were feasible. The theoretical average color error after correction between these filters was still above the fusion limit meaning that rivalry conditions are possible during viewing. This error can be minimized further by designing the filters for a subset of colors corresponding to specific working environments.
Document ID
20120015873
Acquisition Source
Jet Propulsion Laboratory
Document Type
Other
External Source(s)
Authors
Ream, Allen
(Montana State Univ. MT, United States)
Date Acquired
August 26, 2013
Publication Date
August 1, 2011
Subject Category
Instrumentation And Photography
Distribution Limits
Public
Copyright
Other
Keywords
conjugated multiple bandpass filters (CMBF)
color rivalry
multiband bandpass filter,

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