2008
DOI: 10.1364/ao.47.000317
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Dual-sensor foveated imaging system

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 an… Show more

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Cited by 64 publications
(25 citation statements)
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“…Previous strategies to achieve foveated sampling include: the use of non-uniform sensors (with variable photoreceptor density, mimicking the variable sampling rate of the retina) [1]; optical distortion for foveated lens design [2][3][4]; computational integration of independent imagers with dissimilar resolutions [5][6][7][8][9] and the use of a single sensor segmented into multiple channels with dissimilar magnifications [10]. The high cost of hardware and the added complexity of non-uniform sensors, or the optical complexity of foveal optics design, usually make these solutions unattractive.…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…Previous strategies to achieve foveated sampling include: the use of non-uniform sensors (with variable photoreceptor density, mimicking the variable sampling rate of the retina) [1]; optical distortion for foveated lens design [2][3][4]; computational integration of independent imagers with dissimilar resolutions [5][6][7][8][9] and the use of a single sensor segmented into multiple channels with dissimilar magnifications [10]. The high cost of hardware and the added complexity of non-uniform sensors, or the optical complexity of foveal optics design, usually make these solutions unattractive.…”
Section: Introductionmentioning
confidence: 99%
“…A related approach is to employ a lower-complexity wide-FOV optical design and only correct for aberrations over a small region of the FOV that can be programed dynamically using spatial-light modulators [12,13]; however, these solutions still require detectors with a very high pixel count. Alternatively, it is possible to employ two or more sensors with associated but independent optical systems to sample the scene simultaneously at different resolutions and fields of view, that is with different focal lengths, and display or fuse the recorded images as one composite image [5][6][7][8]. A different but related approach is to form a composite image from a mosaic of several images with dissimilarly optical distortions (e.g.…”
Section: Introductionmentioning
confidence: 99%
“…Several attempts have been made to produce an imaging system that balances achievable resolution with large FOV by emulating the human eye [10][11][12][13][14][15][16]. Through the human eye, we observe a drop off in imaging performance from the center of the FOV to the edge as most of the spatial detail is sampled in the center due to a higher concentration of rods and cones in the fovea centralis.…”
Section: Foveated Miniature Objectivementioning
confidence: 99%
“…Higher foveal ratios are attractive for a wide range of applications [1][2][3][4][5][6], and previous approaches include the use of multiresolution systems using single [1] or multiple sensors [2][3][4] and applications in microscopy [5,6]. In this Letter we report an experimental demonstration of computational construction of a foveated image using a multicamera array.…”
mentioning
confidence: 92%