On 2011-04-10 23:19 , Larry Colen wrote:
But, the normal pattern is four pixels R,G,G,B so you could do a four pixel: C,M,Y,W which is almost the same as what printers use: CMYK
don't confuse subtractive with additive color; CMY (& K, though it's not a color) are used on reflective surfaces because reflective surfaces are basically filters -- in essence they take white light and bounce back only some of the wavelengths in order to create the appearance of specific colors; this same principle explains why CMY aren't used in sensors, because to "detect" magenta, you'd actually have to detect the absence of certain wavelengths; similarly a "white sensor", if accurate, would have to detect multiple wavelengths in a balance we'd perceive as white; so intuitively, such sensors would have to produce a signal on reception of larger numbers of photons than RGB sensors which detect intensity in a narrow range of wavelengths
if there are sensors that can do this, i'd think they'd be more complex and less sensitive than RGB sensors
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