Osprey 800e Series User Guide
Osprey Video
23
Video Proc Amp tab
Video Proc Amp stands for Video Process Amplifier. Use the Video Proc Amp tab (Figure 16) to
control various characteristics of streaming output.
Figure 16. Video Proc Amp tab
Gamma correction controls
The Gamma slider and control adjusts the gamma of the incoming video. Gamma refers to the
response curve of video cameras and CRTs. When video is captured through a camera, the response
of the camera is deliberately nonlinear
—
low lumen values are boosted, and high lumen values are
compressed. This process is done for two reasons.
•
It increases the effective bandwidth in the low lumen range, where it is needed, at the expense of the
high lumen range, where it is needed less.
•
It matches the response characteristics of TV sets and monitors.
The calibration specified in video standards matches the requirements of cameras and television
sets in broadcast use, but generally does not match the needs of computer-based applications or
