iCAM (color appearance model)

iCAM, short for image color appearance model, is developed by Mark D. Fairchild and Garrett M. Johnson and initially published in 2002 at the IS&T/SID 10th Color Imaging Conference in Scottsdale, Arizona.[1] As of May 2019, the latest version appears to be iCAM06, a 2006 revision that expanded tone mapping capacities for HDR.[2]

It has been recognized that there are significant aspects of color appearance phenomena that are not described well, if at all, by models such as CIECAM97s or CIECAM02.[3]

The requirements for such a model include:[3]

• Simple implementation for images
• Spatially localized adaptation and tone mapping for high-dynamic-range images
• Other spatial phenomena
• Accurate color appearance
• Scales for gamut mapping and other image editing procedures
• Spatial filtering for visibility of artifacts
• Color difference metrics for image quality assessment

As of 2013, iCAM06 is capable of reaching all of the goals above. Temporal effects have been noted as a future direction of development according to Fairchild's lecture slides.[4]

References

1. Munsell Color Science Laboratory Website Content Author (2009). "iCAM: An Image Appearance Model". Munsell Color Science Laboratory. Archived from the original on 2010-06-11.
2. Kuang, Jiangtao; Johnson, Garrett M.; Fairchild, Mark D. (October 2007). "iCAM06: A refined image appearance model for HDR image rendering" (PDF). Journal of Visual Communication and Image Representation. 18 (5): 406–414. doi:10.1016/j.jvcir.2007.06.003.
3. Mark D. Fairchild, Garrett M. Johnson (2002). "Meet iCAM: A Next-Generation Color Appearance Model". Cite journal requires |journal= (help)
4. Fairchild, Mark D. "Color Appearance Models: CIECAM02 and Beyond" (PDF). IS&T/SID 12th Color Imaging Conference.

External links

• iCAM: An Image Appearance Model at the Munsell Color Science Laboratoryn Website
• The iCAM framework for image appearance, image differences, and image quality M.D. Fairchild and G.M. Johnson, Journal of Electronic Imaging (2004)
• Rendering HDR images G.M. Johnson and M.D. Fairchild, IS&T/SID 11th Color Imaging Conference (2003)
• Measuring images: Differences, Quality, and Appearance G.M. Johnson and M.D. Fairchild, SPIE/IS&T Electronic Imaging Conference (2003)
• Image appearance modeling M.D. Fairchild and G.M. Johnson, SPIE/IS&T Electronic Imaging Conference (2003)
• Meet iCAM: A Next-Generation Color Appearance Model M.D. Fairchild and G.M. Johnson, IS&T/SID 10th Color Imaging Conference (2002)