Where do I find a definition of the term CIEJab? I found the term CIEJab in the Microsoft Longhorn specification in their document “Gamut Boundary Description and Gamut Shell.
The simple answer is that there is no such thing as CIEJab as an official CIE designation. Microsoft has apparently taken it upon themselves to define a new term. Given the context you provided, I would assume they are referring to use of the CIECAM02 color appearance model without tying themselves down so specifically (you could get similar parameters using CIECAM97s). J is the lightness correlate in CIECAM02 and would be similar to the L* correlate in CIELAB. There are no a and b correlates in CIECAM02, but there are several sets of similar parameters depending on whether the dimension being described is colorfulness, chroma, or saturation. Chroma is the one most commonly used in imaging, so I would assume that Microsoft is referring to the rectangular chroma dimensions in CIECAM02, which are designated aC and bC (with the C as subscripts). These are described in Chapter 16 of the second Ed. of “Color Appearance Models”.
Related Questions
- Where do I find a definition of the term CIEJab? I found the term CIEJab in the Microsoft Longhorn specification in their document "Gamut Boundary Description and Gamut Shell.
- What is the legal definition of the term "confidential employee" as used in a job description?
- Does FileSphere provide a facility to create a short definition/description of a document?
