Hardware manual

Impact Reference Guide Line Gauge Dual ROI
3-129 Datalogic Automation Inc.
Line Gauge Dual ROI
In the Measurement Drawer
The Line Gauge Dual ROI tool finds the distance between two points using two line ROIs.
The Line Gauge Dual ROI 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 cam-
era. For example, you can calibrate the 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 multiple image planes, you can
calibrate each 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 the desired distance is being measured.
3. Type the known measurement distance into the Scale Factor Train Distance field.
4. 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
Primary Wide LIne
ROI
A point found on this ROI is used for the measurement starting point. If
the ROI goes partly off the image during runtime, it will be clipped at the
image’s edge.
Primary Wide LIne
ROI List
A list of wide line ROIs used as Primary ROIs for measuring
Secondary Wide
LIne ROI
A point found on this ROI is used for the measurement ending point
Secondary Wide
LIne ROI List
A list of wide line ROIs used as Secondary ROIs for measuring
Distance Type Euclidean: direct distance between the points
AbsoluteX: the distance between Point One and a line through Point
Two's X coordinate and perpendicular to the X axis
AbsoluteY: the distance between Point One and a line through Point
Two's Y coordinate and perpendicular to the Y axis
Distance Tolerance If the distance between the beginning and ending measurement points
exceeds this value, the tool will fail. The parameters are minus, nominal,
and plus.
Primary Endpoint
Position
The starting point for the measurement, beginning from the tail end of
the Primary Wide Line ROI