StraightEdgeOptions

NI Vision for LabWindows/CVI Function

StraightEdgeOptions

Specifies the options used to detect straight edges.

Elements

Name

Type

Description

numLines unsigned int Specifies the number of straight edges to find.
searchMode StraightEdgeSearchMode Specifies the method used to find the straight edge.
minScore double Specifies the minimum score of a detected straight edge.
maxScore double Specifies the maximum score of a detected edge.
orientation double Specifies the angle at which the straight edge is expected to be found.
angleRange double Specifies the +/- range around the orientation within which the straight edge is expected to be found.
angleTolerance double Specifies the expected angular accuracy of the straight edge.
stepSize unsigned int Specifies the gap in pixels between the search lines used with the rake-based methods.
minSignalToNoiseRatio double Specifies the minimum signal to noise ratio (SNR) of the edge points used to fit the straight edge.
minCoverage double Specifies the minimum number of points as a percentage of the number of search lines that need to be included in the detected straight edge.
houghIterations unsigned int Specifies the number of iterations used in the Hough-based method.