AW00089317000 Color Creation and Enhancement
Basler ace GigE 165
8 Color Creation and
Enhancement
This chapter provides information about how color images are created on different camera models
and about the features available for adjusting the appearance of the colors.
8.1 Color Creation
(All Color Models Except the acA750-30gc)
The sensors used in these cameras are 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 part of the filter that allows light of only one color
to strike the pixel. The pattern of the Bayer filter used on the camera is as shown in Figure 86 (the
alignment of the Bayer filter with respect to the sensor is shown as an example only; the figure
shows the "BG" filter alignment). 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.)
Sensor
Pixels
Fig. 86: Bayer Filter Pattern
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