46
6.1.2.2 Rolling Shutter
Shutter
Trigger
Line 1
Exposure
Readout
...
Time
Line 2
Line 3
Line 4
Line 5
Line 6
Line 7
Line n
Line n-3
Line n-2
Line n-1
t
TriggerDelay
For cameras with rolling shutter sensor and set shutter mode Rolling Shutter, for each
frame each line begins exposure at an offset equal to each line's readout time. The ex-
posure time for each line is the same, but the start and end times are staggered. Data
readout for each line begins immediately following the line's exposure. The readout time
for each line is the same, but the start and end times are staggered.
One advantage of a Rolling Shutter is increased sensitivity. However, because exposure
starts at different times throughout the frame, there are known artifacts such as skew,
wobble, and partial exposure.
Notice
Due to technical is-
sues of rolling shut-
ter, a ash control
depending on the ex-
posure time does not
make sense.
Such cameras should
be used in a continu-
ously illuminated envi-
ronment.
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