Hardware manual

Line Gauge Datum Line Impact Reference Guide
Datalogic Automation Inc. 3-126
2. Snap a new image and click the Train button. The tool will average the measured distances and update
the scale factor.
3. Repeat step 2 as needed to average more measurements.
The tool will calculate the scale factor so that the measured distance in pixels (the Output distance) equals
the Scale Factor Train Distance. This factor is applied after any camera calibration factor.
Line Gauge Datum Line
In the Measurement Drawer
The Line Gauge Datum Line tool finds the distance between a point on a line ROI and either a Datum Line
or the X or Y axis of a Datum Origin.
The Line Gauge Datum Line tool can be calibrated so that the distance measured in pixels on the image
relates correctly to the measurement’s real-world units. You can calibrate the tool alone, or in addition to, the
camera. For example, you can calibrate the Line Gauge Datum Line tool on a sample part as well as calibrate
the camera for all parts. If you have multiple measurements and are concerned with lens distortion or multi-
ple image planes, you can calibrate each Line Gauge Datum Line tool separately.
To train the tool’s scale factor:
1. Place the Wide Line ROI across the distance to be measured. If the ROI goes partly off the image dur-
ing runtime, it will be clipped at the image’s edge.
2. Press the Train button. Check the endpoints found to make sure they are correct.
3. Place the Datum Line in the desired position. Press the Run button.
4. Type the known measurement distance into the Scale Factor Train Distance field.
5. Click the Train button.
The tool will calculate the scale factor required to scale the measured distance in pixels to the Scale Factor
Train Distance value.This factor is applied after any camera calibration factor.
A Setup is available for this tool, which will simplify basic configuration. Click the Setup tab to use it.
Input Name What it is
Input Image Linked Image
Tool Origin The tool’s origin relative to the entire image space
Wide Line ROI A point found on this line is used as one endpoint of the measurement. If
the ROI goes partly off the image during runtime, it will be clipped at the
image’s edge.
Wide Line ROI List A list of wide line ROIs used for measuring
Datum Line If Datum Line Type is Datum Line, one endpoint of the measurement is
on this line
Datum Origin If Datum Line Type is Origin X axis or Origin Y axis, one endpoint of the
measurement is on the X or Y axis of this origin.