Dalsa Linea HS Series, Manual

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
Camera Performance and Features
Linea ML Sensor Trigger Delay Exsync
Internal Timing Generation
CLHS Framegrabber
Multiply-Divide Rotary Encoder
Trigger Activation Debouncer
Debouncer Trigger Activation
Input Line 1
Input Line 2
GPIO Connector
Output Line Invert
Output Line 3
GPIO Connector
Output Delay Output Duration
Output Line 4
Output Line 5
Output Line 6
Output Line Invert
Output Line Invert
Output Line Invert
Output Duration
Output Duration
Output Duration
Output Delay
Output Delay
Output Delay
Figure 11 GPIO block diagram
The outputLineSource, outputLinePulseDuration, outputLinePulseDelay, and LineInvert feature
allow the user to control a light strobe source in order to coordinate with the sensor exposure.
Image Response Uniformity & Flat Field Calibration
See the section Flat Field Category in Appendix A for GenICam features associated with this section
and how to use them.
Related Features: Calibrate FPN, Calibrate PRNU, Calibration Algorithm, Calibration Target
It is common to find that an image has a lower response at the edges of the camera’s field of view
compared to its center. This is typically the result of a combination of lens vignetting (cos
4th
) roll-
off and the beam structure of the illumination source. Using a more diffused light may reduce the
roll-off effect. However, if decreasing the lens aperture improves the edge roll-off, then barrel
vignetting (a shadow cast on the sensor by the focus helical or extension tubes) may also be
present.
The camera can compensate for edge roll-off and other optical non-uniformities by using flat field
calibration.
 When performing Flat Field (PRNU) calibration, the camera should be imaging a front
illuminated white target or rear bright field illumination source. The optical setup should be