User Manual

Explanation of Each Video Scope
There are five available video scopes, each of which shows a different analysis of the video
signal you’re adjusting.
Waveform Monitor
Overlays waveform analyses of the Y (luma/luminance), CBCR (the color difference channels of
Y’CBCR), or RGB (red, green, and blue) channels over one another so that you can see how
they align.
The Y option presents a true Luma scope that can have Colorize enabled to show false color,
which lets you see which colors in the Viewer image are where in the video scope graph.
For the RGB scopes, the relative heights of the red, green, and blue graphs indicate is identical
to the description seen for the Parade scope below, and with color enabled the red, green, and
blue graphs are tinted with the color they represent. This makes it easy to see where all three
graphs align, by looking for where parts of the waveform monitor appear in white, which is the
result of the red, green, and blue graphs lining up and adding their color together.
The Waveform scope showing Y’ (luma) only, with
colorization and extents enabled
Parade
The Parade scope shows separate waveforms side by side that analyze the strength of
individual video signal components. The Parade scope can be set to analyze RGB, YRGB,
and Y’CBCR.
By showing a comparison of the intensity of the luma, red, green, and blue channels, the Parade
scope makes it possible to detect and compare imbalances by comparing the relative heights
of the RGB graphs in the highlights (the top of the R, G, and B graphs), shadows (the bottom of
the R, G, and B graphs), and midtones (the middle of the R, G, and B graphs) for the purposes of
identifying color casts and performing scene-by-scene correction.
When the YRGB channels are taken altogether, the bottom of all graphs indicates the black
point of the image, while the tops of all graphs indicate the white point. It then follows that the
difference between the height of the bottom and top of all graphs indicates the overall contrast
ratio of the image you’re evaluating. Tall parade graphs indicate a wide contrast ratio, while
short parade graphs indicate a narrow contrast ratio.
Chapter – 114 Viewers, Monitoring, and Video Scopes 2601