Color Creation and Enhancement
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The second step of the process is to convert the RGB information to the YUV color model. The
conversion algorithm uses the following formulas:
Y = 0.30 R + 0.59 G + 0.11 B
U = - 0.17 R - 0.33 G + 0.50 B
V = 0.50 R - 0.41 G - 0.09 B
Once the conversion to a YUV color model is complete, the pixel data is transmitted to the host PC.
For complete details of the YUV data output formats, see Section 9.3 on page 171.
Mono Format
Cameras equipped with a Bayer pattern color filter can output pixel data in the Mono 8 format.
When a color camera is set for Mono 8, the pixel values in each captured image are first
demosaiced and converted to the YUV color model as described above. The camera then transmits
the 8 bit Y value for each pixel to the host PC. In the YUV color model, the Y component for each
pixel represents a brightness value. This brightness value can be considered as equivalent to the
value that would be sent from a pixel in a monochrome camera. So in essence, when a color
camera is set for Mono 8, it outputs an 8 bit monochrome image. (This type of output is sometimes
referred to as "Y Mono 8".)
For complete details of the Mono 8 format, see Section 9.3 on page 171.
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