0 Three-Channel Arrays

Inside Canon    This section discusses spectral sensitivity and color correction for three-channel systems to illustrate their limitations and show the motivation for a camera with four color channels. Color  correction  from  capture  device  spectral  sensitivity  to  output  device  color  will  be illustrated using an additive three-primary system, such as a video display.   The colors that can be reproduced with a three-color additive display are defined by the tristimulus values of its three primaries [47]. The range of colors, or gamut, of the display is a...

0 Color and tone correction block details

Color and tone correction block details    Many different approaches have been developed to acquire trichromatic color images. Some cameras scan a scene with a trilinear sensor incorporating color filters to capture three channels of color information for every pixel in the scene [51], [52].  These cameras can achieve very high spatial resolution and excellent color quality.  Because the exposure of each scan line of the scene is sequential, the exposure time for each line must be a small fraction of the capture time for the whole scene. These cameras often take seconds or even minutes to acquire a full scene,  so...