28
ROI
Pixel Information of Interrest
Discarded Pixel Information
Read out Lines
The most significant reduction of the readout time – compared to a full frame readout in
dual mode – can be achieved if the ROI is positioned as follows:
within one of the sensor halves
▪
symmetrically spread to both sensor halves
▪
For example, the readout time of the ROI's in the figures 21 and 22 is the same.
On asymmetrically spread ROI's, the readout time is affected by the bigger part of the
ROI.
An example for this fact is shown in the figure below:
The ROI has the same size as in figure 21, but is not symmetrically spread to both sen
-
sor halves. In this special case the time for the readout of the same number of pixels is
increased by 50%, caused only by ROI's position.
Figure 23 ►
ROI:
Read out Lines.
Figure 24 ►
ROI:
Example ROI's with
identical readout times.
Figure 25 ►
ROI:
Read out time linked
with position of the ROI.
