There are several main types of color image sensors, differing by the type of color-separation mechanism:
- Bayer sensor, low-cost and most common, using a color filter array that passes red, green, or blue light to selected pixel sensors, forming interlaced grids sensitive to red, green, and blue – the missing color samples are interpolated using a demosaicing algorithm. In order to avoid interpolated color information, techniques like color co-site sampling use a piezo mechanism to shift the color sensor in pixel steps. The Bayer sensors also include back-illuminated sensors, where the light enters the sensitive silicon from the opposite side of where the transistors and metal wires are, such that the metal connections on the devices side are not an obstacle for the light, and the efficiency is higher.
- Foveon X3 sensor, using an array of layered pixel sensors, separating light via the inherent wavelength-dependent absorption property of silicon, such that every location senses all three color channels.
- 3CCD, using three discrete image sensors, with the color separation done by a dichroic prism. Considered the best quality, and generally more expensive than single-CCD sensors.
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Other articles related to "color separation, color":
... There are several main types of color image sensors, differing by the type of color-separation mechanism Bayer sensor, low-cost and most common, using a color filter array that passes red, green, or blue light ... In order to avoid interpolated color information, techniques like color co-site sampling use a piezo mechanism to shift the color sensor in pixel steps ... property of silicon, such that every location senses all three color channels ...
... and some of their uses include Wratten number Visible color Filter factor or alternate designation F-Stops correction Uses and characteristics 1A Called a skylight filter ... blocking visible wavelengths below 470 nm 11 yellowish-green Color Correction ... or Aerochrome Infrared films to obtain false-color results ...
... When used for color separation in an imaging system this method has some advantages over other methods, such as the use of a Bayer filter ... Better color separation than with most other filters ...
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