Hardware manual

Point Match Impact Reference Guide
Datalogic Automation Inc. 3-136
Peak Valley Find Tool Details
Edges are chosen as the first edge (either rising or falling), in the direction of the line segment, that is within
the given edge strength range. This range value is used to select edges more specifically and filter out image
noise.
Peaks and valleys are generated using this list of edges and a minimum amplitude value. The minimum
amplitude is used to suppress peaks and valleys which are below the threshold. It specifies the minimal dis-
tance (in the direction of the line segment) between the adjacent peaks and valleys. If no edges are further
apart than the minimum amplitude, then no peaks or valleys are detected. False peaks and valleys (due to
noise or minor deviations) less than the minimum amplitude value are suppressed.
Point Match
In the Measurement Drawer
The Point Match tool compares an ideal point list and an actual point list and finds matches within a given
tolerance. The point lists are both assumed to be relative to the same origin, but are not assumed to be in any
particular order. The Point Match Tool reports extra points and points that are missing in the actual point list
Since no point correspondence is assumed, two separate lists of Booleans are output to indicate which points
in the ideal and actual lists have corresponding points within tolerance. Tolerance checking is based on
radial or x-y offset distance (depending on which tolerance is enabled or the largest value if both are
enabled).
When you click the Train button, the Actual Points input is copied into the Ideal Points input. This allows
you to use a golden part for quick setup of an application. The Ideal Points would ordinarily come from a
CAD drawing rather than a golden part, but since that is not always feasible you can use the Train button.
The Ideal Points are saved with the vision program file.
Valley List A list of valley edge points.
Edge Point List A list of edge points.
Peak Count A count of peak points found along the edge.
Valley Count A count of valley points found along the edge.
Input Name What it is
Input Image Linked Image
Tool Origin The tool’s origin relative to the entire image space
Output Name What it is
Edge Direction
Minimum Amplitude
False Peak
Peak
Valley