Color-Accurate Camera Capture with Multispectral Illumination and Multiple Exposures

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dc.contributor.authorGao, Hongyunen_US
dc.contributor.authorMantiuk, Rafal K.en_US
dc.contributor.authorFinlayson, Graham D.en_US
dc.contributor.editorChen, Renjieen_US
dc.contributor.editorRitschel, Tobiasen_US
dc.contributor.editorWhiting, Emilyen_US
dc.date.accessioned2024-10-13T18:09:36Z
dc.date.available2024-10-13T18:09:36Z
dc.date.issued2024
dc.description.abstractCameras cannot capture the same colors as those seen by the human eye because the eye and the cameras' sensors differ in their spectral sensitivity. To obtain a plausible approximation of perceived colors, the camera's Image Signal Processor (ISP) employs a color correction step. However, even advanced color correction methods cannot solve this underdetermined problem, and visible color inaccuracies are always present. Here, we explore an approach in which we can capture accurate colors with a regular camera by optimizing the spectral composition of the illuminant and capturing one or more exposures. We jointly optimize for the signal-to-noise ratio and for the color accuracy irrespective of the spectral composition of the scene. One or more images captured under controlled multispectral illuminants are then converted into a color-accurate image as seen under the standard illuminant of D65. Our optimization allows us to reduce the color error by 20-60% (in terms of CIEDE 2000), depending on the number of exposures and camera type. The method can be used in applications in which illumination can be controlled, and high colour accuracy is required, such as product photography or with a multispectral camera flash. The code is available at https://github.com/gfxdisp/multispectral_color_correction.en_US
dc.description.number7
dc.description.sectionheadersImage Processing and Filtering II
dc.description.seriesinformationComputer Graphics Forum
dc.description.volume43
dc.identifier.doi10.1111/cgf.15252
dc.identifier.issn1467-8659
dc.identifier.pages12 pages
dc.identifier.urihttps://doi.org/10.1111/cgf.15252
dc.identifier.urihttps://diglib.eg.org/handle/10.1111/cgf15252
dc.publisherThe Eurographics Association and John Wiley & Sons Ltd.en_US
dc.rightsAttribution 4.0 International License
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectCCS Concepts: Computing methodologies → Computational photography; Image processing; Perception
dc.subjectComputing methodologies → Computational photography
dc.subjectImage processing
dc.subjectPerception
dc.titleColor-Accurate Camera Capture with Multispectral Illumination and Multiple Exposuresen_US
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