Dual-sensor foveated imaging system
Applied Optics, Vol. 47, Issue 3, pp. 317-327 (2008)
http://dx.doi.org/10.1364/AO.47.000317
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Abstract
Conventional imaging techniques adopt a rectilinear sampling approach, where a finite number of pixels are spread evenly across an entire field of view (FOV). Consequently, their imaging capabilities are limited by an inherent trade-off between the FOV and the resolving power. In contrast, a foveation technique allocates the limited resources (e.g., a finite number of pixels or transmission bandwidth) as a function of foveal eccentricities, which can significantly simplify the optical and electronic designs and reduce the data throughput, while the observer's ability to see fine details is maintained over the whole FOV. We explore an approach to a foveated imaging system design. Our approach approximates the spatially variant properties (i.e., resolution, contrast, and color sensitivities) of the human visual system with multiple low-cost off-the-shelf imaging sensors and maximizes the information throughput and bandwidth savings of the foveated system. We further validate our approach with the design of a compact dual-sensor foveated imaging system. A proof-of-concept bench prototype and experimental results are demonstrated.
© 2008 Optical Society of America
OCIS Codes
(110.0110) Imaging systems : Imaging systems
(220.4830) Optical design and fabrication : Systems design
(330.1800) Vision, color, and visual optics : Vision - contrast sensitivity
(230.4685) Optical devices : Optical microelectromechanical devices
(330.7338) Vision, color, and visual optics : Visually coupled optical systems
ToC Category:
Imaging Systems
History
Original Manuscript: September 25, 2007
Revised Manuscript: November 16, 2007
Manuscript Accepted: November 17, 2007
Published: January 14, 2008
Virtual Issues
Vol. 3, Iss. 2 Virtual Journal for Biomedical Optics
Citation
Hong Hua and Sheng Liu, "Dual-sensor foveated imaging system," Appl. Opt. 47, 317-327 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-3-317
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