Matrox MXO2 PCIe Host Adapter - Manual (Page 143)

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Creating a Matrox primary color correction
Using the luma mapping graph
To modify your luma mapping values directly in the graph, click the triangle next
to the
Luma Mapping Graphical property to expand it:
• Map This is the default view when you first expand the Graphical
property. You can drag the handles in the graph to adjust the Input and
Output levels for black and white, as well as the Gamma .
• Plot Click this button to plot the luminance values in the current frame of
your clip to the histogram (the plot will reflect any color correction changes
you’ve made). Each luminance value present in your image appears as a
vertical line in the histogram. A longer line indicates a higher amount of
pixels in your image of that line’s luminance value. You can drag the handles
0
Input
Black
Level
1
Input
White
Level
2
Output
Black
Level
3
Output
White
Level
4
Gamma
0
1
2
3
4