Troubleshooting and performance
135
Alvium USB Cameras User Guide V3.1.3
Shutter types and effects
Some Alvium USB camera models are operated using global shutter (GS):
Other models use electronic rolling shutter (ERS). Alvium 1800 U-2050 models
with Sony IMX183 sensor offer global reset shutter (GRS) in addition:
Property
Line readout
Moving image
Global shutter
Property
Rolling shutter
Global reset shutter
Line readout
Line exposure start
Deferred from line to line
Common for all lines
Line exposure time
Common for all lines
Increases from line to line
Image acquisition
of moved objects
Image brightness
Constant over the image
Varying over the image
Moving objects
Distorted shape
Shape without distortion
Typical application
Static objects
Moving objects
Compensation
Use an additional mechanical or use a strobe light:
Table 60: Shutter types and effects
/ŶƚĞŐƌĂƟŽŶ
džƉŽƐƵƌĞĐƟǀĞ
Time
ZĞĂĚŽƵƚ
>ŝŶĞƐ
/ŶƚĞŐƌĂƟŽŶ
Time
ZĞĂĚŽƵƚ
Lines
džƉŽƐƵƌĞĐƟǀĞ
/ŶƚĞŐƌĂƟŽŶ
Time
ZĞĂĚŽƵƚ
Lines
džƉŽƐƵƌĞĐƟǀĞ
/ŶƚĞŐƌĂƟŽŶ
Time
ZĞĂĚŽƵƚ
^ƚƌŽďĞůŝŐŚƚ
Lines
/ŶƚĞŐƌĂƟŽŶ
Time
ZĞĂĚŽƵƚ
Lines
^ƚƌŽďĞ
Strobe area