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2006.12.06 02:05 "Re: Grayscale, or is it?", by Graeme Gill
Bob Friesenhahn wrote: > It is true that the notion of "linear" is not well defined. A video > engineers notion of "linear" differs from the 3D renderer's notion of > "linear". To the broadcast engineer, gamma corrected video can be > considered "linear" since each quantization step is proportionally > brighter to the human viewer. But for purposes of rendering and > sensing, "linear" means "linear light". Maybe, or are Video engineers really talking about a linear response transmission channel, which they can feed their non-linearly encoded signal over ? (Of course, most may not really know). But video conventions aren't the dominant ones in the computer world, and a lot of the video conventions (The word "Luminance" for instance) are out of kilter with the international standards applying to color science and imaging. Graeme Gill.