dc.contributor.author | Guarnera, Giuseppe Claudio | |
dc.contributor.author | Bianco, Simone | |
dc.contributor.author | Schettini, Raimondo | |
dc.date.accessioned | 2019-01-16T12:23:01Z | |
dc.date.available | 2019-01-16T12:23:01Z | |
dc.date.created | 2018-05-23T12:07:05Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Computer graphics forum (Print). 2018, . | nb_NO |
dc.identifier.issn | 0167-7055 | |
dc.identifier.uri | http://hdl.handle.net/11250/2580873 | |
dc.description.abstract | We present a simple and effective technique for absolute colorimetric camera characterization, invariant to changes in exposure/aperture and scene irradiance, suitable in a wide range of applications including image‐based reflectance measurements, spectral pre‐filtering and spectral upsampling for rendering, to improve colour accuracy in high dynamic range imaging. Our method requires a limited number of acquisitions, an off‐the‐shelf target and a commonly available projector, used as a controllable light source, other than the reflected radiance to be known. The characterized camera can be effectively used as a 2D tele‐colorimeter, providing the user with an accurate estimate of the distribution of luminance and chromaticity in a scene, without requiring explicit knowledge of the incident lighting power spectra. We validate the approach by comparing our estimated absolute tristimulus values (XYZ data in urn:x-wiley:01677055:media:cgf13393:cgf13393-math-0001) with the measurements of a professional 2D tele‐colorimeter, for a set of scenes with complex geometry, spatially varying reflectance and light sources with very different spectral power distribution. | nb_NO |
dc.language.iso | eng | nb_NO |
dc.publisher | Wiley | nb_NO |
dc.title | Turning a Digital Camera into an Absolute 2D Tele‐Colorimeter | nb_NO |
dc.type | Journal article | nb_NO |
dc.type | Peer reviewed | nb_NO |
dc.description.version | acceptedVersion | nb_NO |
dc.source.pagenumber | 14 | nb_NO |
dc.source.journal | Computer graphics forum (Print) | nb_NO |
dc.identifier.doi | 10.1111/cgf.13393 | |
dc.identifier.cristin | 1586196 | |
dc.description.localcode | Locked until 10.4.2019 due to copyright restrictions. This is the peer reviewed version of an article, which has been published in final form at [https://doi.org/10.1111/cgf.13393]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving. | nb_NO |
cristin.unitcode | 194,63,10,0 | |
cristin.unitname | Institutt for datateknologi og informatikk | |
cristin.ispublished | false | |
cristin.fulltext | postprint | |
cristin.qualitycode | 2 | |