User`s manual

Pixel Formats, Tap Geometries, and Color Filters
Basler aviator Camera Link 99
6.3 The Bayer Color Filter
The sensor used in color models of the camera is equipped with an additive color separation filter
known as a Bayer filter. The pixel data output formats available on color cameras are related to the
Bayer pattern, so you need a basic knowledge of the Bayer filter to understand the pixel formats.
With the Bayer filter, each individual pixel is covered by a micro-lens that allows light of only one
color to strike the pixel. As the figure illustrates, within each square of four pixels, one pixel sees
only red light, one sees only blue light, and two pixels see only green light. (This combination mimics
the human eye’s sensitivity to color.)
Fig. 31: Bayer Filter Pattern
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Sensor
Pixels