Abstract
In an electronic color-imaging device, such as a digital camera, using a single CCD (Charge Coupled Device) sensor, the color information is usually acquired in sub-sampled patterns of Red (R), Green (G) and Blue (B) pixels. The methodology to recover or interpolate the missing color components is known as color demosaicing, a type of image interpolation.
Highlights
Due to the cost and packaging consideration, in digital imaging devices, such as the commercially available Digital Still Cameras (DSC), the image color is captured in a sub-sampled pattern
Each pixel in the captured raw image contains only one of the three primary color components, R (Red), G (Green), or B (Blue). This sub-sampled color image is generated using certain pattern of a Color Filter Array (CFA). This CFA is realized by coating the surface of the electronic sensor array or a single Charge Coupled Device (CCD) array using some optical material that acts as a band-pass filter
Bilinear algorithm gives better results than other non-adaptive methods and in some cases adaptive methods, as bilinear takes into account the gradual transition of pixel color values
Summary
Due to the cost and packaging consideration, in digital imaging devices, such as the commercially available Digital Still Cameras (DSC), the image color is captured in a sub-sampled pattern. Each pixel in the captured raw image contains only one of the three primary color components, R (Red), G (Green), or B (Blue). This sub-sampled color image is generated using certain pattern of a Color Filter Array (CFA). This CFA is realized by coating the surface of the electronic sensor array or a single CCD array using some optical material that acts as a band-pass filter.
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