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The tool finds
one or more lines using an arcial trace comb (a sector). The trace lines are
straight, along the radius as illustrated below.
Setup
Reference - Reference system selection
Trace comb - describing the edge search area
- Center-x - center x of trace comb
- Center-y - center y of trace comb
- Sector angle - angle of trace comb
- Sector width - width of trace comb
- Angle step - search in angle step, degrees
- Radius - radius of the trace comb
- Radial width - width of the radius
Search criteria
- Polarity - All transitions | Light to dark | Dark to light
- Edge threshold - the threshold or sensitivity of the
line finder - a lower value means more sensitivity
Advanced
Edge finder
- Mode - Peak | Threshold. Peak is default. Threshold is only
used when Differentiation is set to 0.
Filter
- Sample step -
- Smooth base - 3 is normally a good value
- Smooth counter - 1 default - given i pixels
- The smoothing increasing with higher values
- Differentiation - More information - see Normalisation
- 0 - give threshold
- 1 - 1. order differentiation - the derivative - default normally
used
- 2 - 2. order differentiation
- Normalisation width -
- Normalisation selector -
Line Fit
- Fit tolerance - points outside tolerance is not accepted
- Number of good points -
- Search risk (PPM) - 1 default - a lower value will perform more
iterations
Results
|
Line (x,y)
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Coordinates
of the line’s start and end points
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Angle
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The line
angle
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Center
distance
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Gradient
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Line-fit
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RMS-value
of the line fit; average deviation (the lower, the better)
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Line coverage
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Visualisation
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ROI
|
Region Of
Interest
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Edge points
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The found
edge points
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Fitted
points
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Line
|
The found
line
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Trace lines
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Trace lines
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ExecuteCmd support - more information
executeCmd
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Command
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Parameters
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Return values
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Comments
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Set |
Object=ROI;Value=<center/baseline> |
ok,res |
Sets the tool's ROI. See Copy/paste
ROIs for details. |
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Get |
Object=ROI |
ok,<baseline> |
Current ROI baseline |
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