AW00136902000
Image Acquisition Control
Basler dart BCON
73
9.5
Overlapping Image Acquisitions
There are two common ways for the camera to operate:
with “non-overlapped” exposure and
with “overlapped” exposure.
In the
non-overlap
mode of operation, each time a frame is acquired the camera completes the
entire readout process (exposure of the readout of the pixel values from the sensor) before
acquisition of the next frame is started. The exposure for a new frame does not overlap the sensor
readout for the previous frame. This situation is illustrated in
with the camera set for the
trigger width exposure mode.
In the
overlap
mode of operation, the exposure of a new frame begins while the camera is still
reading out the sensor data for the previously acquired frame. This situation is illustrated in
with the camera set for the trigger width exposure mode.
Frame Acquisition N
Exposure
Sensor Readout
Frame Acquisition N+1
Exposure
Sensor Readout
Frame Acquisition N+2
Exposure
Sensor Readout
Time
ExFSTrig
Signal
Fig. 32: Non-overlapped Exposure and Sensor Readout
Frame Acquisition N
Exposure
Sensor Readout
Frame Acquisition N+1
Exposure
Sensor Readout
Frame Acquisition N+2
Exposure
Sensor Readout
Time
Frame Acquisition N+3
Exposure
Sensor Readout
ExFSTrig
Signal
Fig. 33: Overlapped Exposure and Sensor Readout