Aurora Visio Studio TOP » Filter Reference » Computer Vision » 2D Edge Detection » DetectRidges_AsPaths

DetectRidges_AsPaths

Advanced

Module: FoundationBasic

Extracts subpixel-precise paths that represent bright or dark thin lines.

Applications

Consistent detection of thin structures like scratches, cracks or lines.
Name Type Range Description
Input value
 inImage Image Input image
Input value
 inRoi Region* Region of interest
Input value
 inStdDevX Real 0.0 - Smoothing standard deviation (horizontal)
Input value
 inStdDevY Real* 0.0 - Smoothing standard deviation (vertical, or Auto = horizontal)
Input value
 inRidgeThreshold Real 0.0 - Sufficient ridge strength; ridges of that strength will always be detected
Input value
 inRidgeHysteresis Real 0.0 - Value by which the ridge threshold is decreased for ridge points neighboring with sufficiently strong edges
Input value
 inPolarity Polarity
Output value
 outRidges PathArray

Hints

  • Connect an input image to the inImage input.
  • Set inPolarity in accordance to which type of thin lines you want to detect.
  • Start with inRidgeHysteresis = 0 and set inRidgeThreshold so that each important edge is at least partially detected. Then keep increasing inRidgeHysteresis until the edges are detected completely.
  • If the edges are rugged or there are too many false edges, then try increasing inStdDevX.

Hardware Acceleration

This operation supports automatic parallelization for multicore and multiprocessor systems.

Complexity Level

This filter is available on Advanced Complexity Level.

Filter Group

This filter is member of DetectRidges filter group.