8.Features
© China Daheng Group, Inc. Beijing Image Vision Technology Branch 92
MER2-041-302GM/C-P
MER2-160-75GM/C
MER2-160-75GM/C-P
MER2-503-23GM/C
MER2-503-23GM/C-P
ME2P-1230-9GM/C-P
In UltraShort exposure time mode, the MER2-G camera does not support automatic adjustment
of the exposure time, only support manual adjustment of the exposure time.
8.2.9. Set Exposure
Global Shutter
The implementation process of global shutter is as shown in Figure 8-19, all the lines of the sensor are
exposed at the same time, and then the sensor will read out the image date one by one.
The advantage of the global shutter is that all the lines are exposed at the same time, and the images do
not appear offset and distortion when capturing moving objects.
Exposure time
Readout time
All lines are exposing at the same time
All lines transfer electrons from
exposure area to storage area
Reading electrons from
storage area line by line
Time
Figure 8-19 Global Shutter
Electronic Rolling Shutter
The implementation process of electronic rolling shutter is as shown in Figure 8-20, different from the
global shutter, electronic rolling shutter exposures from the first line, and starts the second line exposure
after a row period. And so on, after N-1 line, the N line starts exposing. When the first line exposure ends,
it begins to read out the data, and it need a row period time to read out one line (including the line blanking
time). When the first line reads out completely, the second line just begins to read out, and so on, when
the N-1 line is read out, the N line begins to read out, until the whole image is read out completely.