648 Appendix B Image Reference
The Stairs20 image is shown below.
Test Video gain linearity
Method When viewed on a monitor’s screen, a black bar plus five (5) gray bars should be visible.
There should be no color shifts, and each of the bars should be uniform in color.
The image also can be used with an oscilloscope or TV waveform analyzer to check the
gain linearity and gamma correction of a video system.
Strokes0, Strokes1
Description This image may cited by some display manufacturers’ test procedures. The Strokes0
version consists of multiple groups of separated red, green and blue horizontal lines drawn
on a black background. The Strokes1 version consists of multiple groups of separated red,
green and blue diagonal lines drawn on a black background.
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