Cheetah KAC Camera User Manual | Camera Link (CLF) Interface
October 1, 2019
Page
85
of
135
Rev 7.2
5 Camera Features
5.1 Dual Video (Frame A / Frame B)
5.1.1 Frame A / Frame B Description
The camera provides two user defined frames (Frame A and Frame B) and the ability to
switch seamlessly between the two frames either manually, automatically or triggered.
See Section 2.1.2 Frame Switching Options. The user can program each frame with
independent control of the following functions:
•
Exposure Time
•
Frame Period
•
Area of Interest (AOI)
•
Averaging
•
Subsampling
•
Gain
•
Offset
•
Wide Dynamic Range
Dual video provides the ability to use the image sensors high output frame rate to boost
camera functionality. For example, Frame A can be programmed to readout a quad Full
HD (QFHD - 3840 x 2160) AOI with 4:1 color averaging so that the resulting camera output
is 1080P (1920 x 1080) at video frame rates. Frame B can then be programmed to provide
the same Quad Full HD AOI, but without averaging so the resulting camera output is full
resolution (QFHD). The user can then switch between Frame A and Frame B (HD and
QFHD) resolutions using a variety of different controls and providing a high resolution
QFHD video stream and a lower resolution video stream of the same field of view. The
following Figure shows the concept. As another example, Frame B might provide a low-
resolution contextual image showing the entire field of view at video frame rates while
Frame A is programmed to be small AOI within the field of view at full resolution and
displayed at much higher frame rates to track objects of interest within the larger scene.
Figure 48: Dual Video Operational Example.
