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UpdatedMay 12, 2023

Edge Detection

Description

Extracts the contours (detects edges) in gray-level values. Type : polymorphic.

 

Input parameters

 

Image Src : class, type acceptedΒ U8Β and I16.
Image Mask : class, type acceptedΒ U8Β and I16.

Edge Detection Parameters : cluster,

Threshold Value : integer, minimum pixel value to appear in the resulting image. It is rare to use a value greater than 0 for this type of processing because the results from this processing are usually very dark and are not very dynamic.
 Method : enum, specifies the type of edge-detection filter to use.

      • Differentiation : processing with a 2 Γ— 2 matrix
      • Gradient :Β processing with a 2 Γ— 2 matrix
      • Prewitt : processing with a 3 Γ— 3 matrix
      • Roberts : processing with a 2 Γ— 2 matrix
      • Sigma : processing with a 3 Γ— 3 matrix
      • Sobel : processing with a 3 Γ— 3 matrix

 

Output parameters

 

Image Dst : class

Examples

All these examples are snippets PNG, you can drop these Snippet onto the block diagram and get the depicted code added to your VI (Do not forget to install Computer Vision ​library to run it).

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