CannyOptions

NI Vision for LabWindows/CVI Function

CannyOptions

A description of filter parameters to use in the algorithm.

Elements

Name

Type

Description

sigma float The sigma of the Gaussian smoothing filter that the function applies to the image before edge detection.
upperThreshold float The upper fraction of pixel values in the image from which the function chooses a seed or starting point of an edge segment. This value must be between 0 and 1.
lowerThreshold float The function multiplies this value by upperThreshold to determine the lower threshold for all the pixels in an edge segment.
windowSize int The window size of the Gaussian filter that the function applies to the image. This value must be odd.