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Integrate then read (ITR)
In this mode, the integration of the next image is done when the readout of the current image is fully
completed. Light integration is lost for the frame readout time. So, for an identical fps, the integration
time is always shorter than in IWR mode.
Figure 10:
ITR mode overview.
ITR / IWR consideration
The mode is determined by the integration time only. If you set an integration time small enough to
have the time to readout the frame, the camera will work in ITR mode. Otherwise the camera will work
in IWR mode.
In IWR mode, the camera starts the integration of a new frame while the readout of the current frame
is still running. Depending on the integration time, it can have a small impact on the image.
A kind of noisy line can be observed at the integration starting point of the next frame. This issue can
be mitigated using bias correction.
In ITR, with small integration time, the noisy line cannot be seen because it is below the last line of the
current image.
Same in IWR with the maximum integration time, because it is above the first line of current image.
However, between these two integration times, you may see it.
To set the integration time the command is: “
set tint xxx
” where xxx is the integration time in
second.
For the current framerate, you can get the max possible integration time with the command: : “
max
tint
” and the maximum possible integration time to stay in ITR mode with the command: “
max
tintitr
”
