Sis: definition, Sis: scenarios, Sis: definition sis: scenarios – ALLIED Vision Technologies Pike F-1600 User Manual
Page 233: Is: see chapter, Secure image signature (sis): definition, And scenarios
Controlling image capture
PIKE Technical Manual V5.1.2
233
Secure image signature (SIS): definition and
scenarios
SIS: Definition
Secure image signature (SIS) is the synonym for data, which is inserted into
an image to improve or check image integrity.
With the new firmware 3.x, all Pike models can insert
•
Time stamp (1394 bus cycle time at the beginning of integration)
•
Trigger counter (external trigger seen only)
•
Frame counter (frames read out of the sensor)
•
AOI (x, y, width, height)
•
Exposure (shutter) and gain
•
Input and output state on exposure start
•
Index of sequence mode
•
Serial number
•
User value
into a selectable line position within the image. Furthermore the trigger coun-
ter and the frame counter are available as advanced registers to be read out
directly.
SIS: Scenarios
The following scenarios benefit from this feature:
•
Assuming camera runs in continuous mode, the check of monotonically
changing bus cycle time is a simple test that no image was skipped or lost
in the camera or subsequently in the image processing chain.
•
In (synchronized) multi camera applications, the time stamp can be used
to identify those images, shot at the same moment in time.
•
The cross-check of the frame counter of the camera against the frame
counter of the host system also identifies any skipped or lost images dur-
ing transmission.
•
The cross-check of the trigger counter against the frame counter in the
camera can identify a trigger overrun in the camera.
Note
For all customers who know SIS from Marlin cameras:
•
Pike cameras have additional SIS features: AOI,
exposure/gain, input/output state, index of sequence
mode and serial number.
•
In contrary to Marlin cameras, in the Pike SIS feature the
endianness cannot be changed.