Color Creation And Enhancement; Color Creation (All Color Models Except The Aca750-Gc) - Basler ace acA640-90gm User Manual

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-gc)
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 70 (the
alignment of the Bayer filter with repect 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.)
Fig. 70: Bayer Filter Pattern
Basler ace GigE

Color Creation and Enhancement

Sensor
Pixels
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