xiMU - Technical Manual Version 2.10
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4.4.
Sensor Shutter Modes
XiMu cameras can be operated in two shutter modes,
Rolling Shutter
or
Global Reset Release
.
The
Rolling Shutter
mode is used if the camera is operated in free-run mode. If the camera is triggered, either by hardware
trigger or through software, the sensor uses the
Global Reset Release mode
.
4.4.1.
Rolling Shutter Mode
•
Line by line integration state
•
Line by line transfer and readout
Integration of next line is delayed by readout time of one line
figure 4-4, rolling shutter mode - schematic
Artifacts caused by subject movement
Because of the sequential start of the exposure, the rolling shutter mode may introduce artifacts effect if objects move. In the
direction of the lines (horizontal) the image will be sheared. When moving in vertical direction, the object may appear longer or
shorter.
figure 4-5, rolling shutter mode, image of a horizontally moved object
When the exposure is longer also motion blur may occur
figure 4-6, rolling shutter mode, image of a horizontally moved object, long exposure time
Readout
Exposure
Time
L
in
e
s
