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SUMMARY:[CANCELLED] Color-Accurate Camera Capture with Multispectral Illum
 ination and Multiple Exposures [practice talk] - Hongyun Gao\, University 
 of Cambridge
DTSTART:20241010T130000Z
DTEND:20241010T140000Z
UID:TALK222085@talks.cam.ac.uk
CONTACT:Rafal Mantiuk
DESCRIPTION:[CANCELLED]\n\nCameras cannot capture the same colors as those
  seen by the human eye because the eye and the cameras’ sensors differ i
 n\ntheir spectral sensitivity. To obtain a plausible approximation of perc
 eived 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 al
 ways present. Here\, we explore an approach in which we can capture accura
 te colors with a regular camera by optimizing the spectral composition of 
 the illuminant and capturing one or more exposures. We jointly optimize fo
 r the signal-to-noise ratio and for the color accuracy irrespective of the
  spectral composition of the scene. One or more images captured under cont
 rolled multispectral illuminants are then converted into a color-accurate 
 image as seen under\nthe standard illuminant of D65. Our optimization allo
 ws us to reduce the color error by 20–60% (in terms of CIEDE 2000)\,\nde
 pending 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 multispectra
 l camera flash.\n\nZoom link: https://cam-ac-uk.zoom.us/j/87001605167?pwd=
 8Fm0icapflADaxMRP5IOiUCqqCtblO.1\n
LOCATION:SS03 - William Gates Building
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