Video Area
18
The following sections describe the active video area and the ROI
within the active video area that you want to acquire and save.
Active Video Area
The active video area floats in the total video area. The active video
area is defined as that part of the incoming signal that contains valid
video data (not blanking or sync information). Therefore, the active
video area consists of the visible portion of those lines containing
visible pixel data.
Using software, you can define the active area for the DT3162 board.
The following sections describe how to use the settings of the board
to define the horizontal and vertical components of the active video
area.
Horizontal Video Signal
Each line of video contains horizontal sync information, blanking
information, and active video.
single horizontal line of video. Pixel measurements are relative to the
horizontal reference point, which is defined as the beginning of the
horizontal sync.
Note that the ROI is an area that you establish within the active video
area. For more information about ROIs, refer to
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