dc.date.accessioned | 2021-04-25T19:04:29Z | |
dc.date.available | 2021-04-25T19:04:29Z | |
dc.date.created | 2020-08-10T15:12:53Z | |
dc.date.issued | 2020 | |
dc.identifier.citation | Skauli, Torbjørn . Specifying radiometric performance of hyperspectral and conventional cameras: A minimal set of independent characteristics. Proceedings of SPIE, the International Society for Optical Engineering. 2020, 11392, 1-12 | |
dc.identifier.uri | http://hdl.handle.net/10852/85598 | |
dc.description.abstract | The radiometric performance of cameras is customarily characterized and specified in terms of component properties such as F-number and readout noise. This paper considers the camera as an integrated unit and derives characteristics suitable for specifying noise, throughput and saturation as determined from the overall input-to-output performance. A conventional model of signal and noise is reformulated into a simpler "equivalent camera" model with the same radiometric performance, constrained to have a lossless lens with detector-side pupil subtending 1 steradian, and a detector with a peak quantum efficiency (QE) of 1. The small parameter set of this model can then be determined with the camera treated as a "black box", relevant for verification of camera specifications. The net light collection of the real camera is expressed by the detector area of the equivalent camera, denoted A* , as well as the wavelength dependence of its QE, denoted η* (λ). The noise floor due to readout noise can be expressed for a particular camera as a noise equivalent spectral radiance (NESR). For comparison of cameras with different bandwidths, it is shown that a comparative figure of merit, which is also independent of integration time, is the "noise equivalent radiance dose" (NERD). For a hyperspectral camera, the model parameters can be determined with a simple broadband source, while cameras with broad spectral response require measurements with tunable monochromatic light. The treatment also applies to spectrometers. Reference is made to D*, a well-established figure of merit for detectors, and it is argued that A*,η* (λ) and NERD are analogous figures of merit for camera properties. | |
dc.language | EN | |
dc.title | Specifying radiometric performance of hyperspectral and conventional cameras: A minimal set of independent characteristics | |
dc.type | Journal article | |
dc.creator.author | Skauli, Torbjørn | |
cristin.unitcode | 185,15,30,30 | |
cristin.unitname | Seksjon for autonome systemer og sensorteknologier | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |
dc.identifier.cristin | 1822563 | |
dc.identifier.bibliographiccitation | info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Proceedings of SPIE, the International Society for Optical Engineering&rft.volume=11392&rft.spage=1&rft.date=2020 | |
dc.identifier.jtitle | Proceedings of SPIE, the International Society for Optical Engineering | |
dc.identifier.volume | 11392 | |
dc.identifier.startpage | 1 | |
dc.identifier.endpage | 12 | |
dc.identifier.doi | https://doi.org/10.1117/12.2559670 | |
dc.identifier.urn | URN:NBN:no-88264 | |
dc.type.document | Tidsskriftartikkel | |
dc.type.peerreviewed | Peer reviewed | |
dc.source.issn | 0277-786X | |
dc.identifier.fulltext | Fulltext https://www.duo.uio.no/bitstream/handle/10852/85598/2/1822563.pdf | |
dc.type.version | PublishedVersion | |