Telestream PRISM MPI, Руководство пользователя

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Application Information
Picture Application
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PRISM MPI-MPX User Manual
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Brightest x percent
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area, in Nits
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Darkest x percent Area, in Nits
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Contrast Ratio (Brightest:Darkest)
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Dynamic Range (stops = Log2(Brightest x percent / Darkest x percent)).
Picture Measurement Thresholds
To select the thresholds for those picture measurements that require them:
1.
Select the Picture app and then, in the applications menu, select the
Tile
icon ( ).
2. Select the Measurement Thresholds menu item.
The threshold settings:
•
HDR Zone Threshold (Nits): Any picture value higher than this threshold, in Nits, is
considered in the HDR zone.
•
Area (percent): Defines the brightest percentage of the picture used to determine
the bright threshold in Nits.
•
Brightest Area (percent): Defines the brightest percentage of the picture used to
determine the HDR threshold in Nits.
•
Darkest Area (percent): Defines the darkest percentage of the picture used to
determine the dark threshold in Nits.
Configure the Lightmeters
The Lightmeters measure the light level, in Nits or stops, at the point marked by the
Lightmeter cursor in the Picture application. Proper operation requires selecting the
appropriate Gamma Curve in the input settings. (See Choose the Gamma Curve option
from the drop-down menu. The selection characterizes the video signal on each virtual
input. )