Color creation
Image sensors are capable of delivering only grey values. To obtain full-color information, each pixel is covered by a color filter (Red, Green, or Blue) following an assigned pattern (e.g. Bayer pattern), allowing the pixel to deliver the gray value for the color of the related color filter.
If a value is not measured, it can be interpolated using the gray values delivered by the neighboring pixels.
An alternative to this technique is using a different sensor for each primary color.
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