Datavideo VGB-2000, Инструкция по эксплуатации

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7.2.2 SE-1200MU’s Chroma Key Ctrl Settings
The Chroma Key Ctrl parameters and values are shown along the bottom of the display. Two color
palettes, Main and Chroma, are shown in the diagram.
The Main palette corresponds to values of Key Acceptance and Key Lift. The Chroma palette
corresponds to the Color Spill settings.
Key Acceptance is represented on the Main Palette as a sector or area covering a range of hues or
colors that closely match the background color to be keyed as set in Chroma Matte. The user can start
with a value of 120 degrees and this value can be fine-tuned up or down using the Key Acceptance
depending on the setup of the green or blue screen studio.
Key Lift is represented on the Main Palette as a line extending from the center point in the direction
of the Key Acceptance sector. This value affects the performance of the Chroma key in dark or black
areas. If the dark areas of the video are becoming too transparent, then applying more Key Lift may
help depending on the setup of the green or blue screen studio. This value can be fine-tuned up or
down by changing the Key Lift value.
Key Gain affects the performance of the Chroma key in light or white areas. If the light areas of the
video are becoming too transparent then applying more Key Gain may help depending on the
setup of the green or blue screen studio. This value can be fine-tuned up or down by changing the
Key Gain value.