Grayscale Dilation and Erosion

A very fast implementation.

You are now following this Submission

The zip file includes:
- readme.txt this file
- gdil.c ----> a c file which must be mex compiled
- gerod.c ---> a c file which must be mex compiled
- graydil.m --> the m function (dilation)
- grayero.m --> the m function (erosion)
- provatempo.m ---> many examplex of use

Grayscale erosion and dilation: a very fast implementation.

We have optimized execution time of grayscale erosion and dilation. Our functions take advantage of MATLAB's decomposition of structuring
elements.

graydil(im,se) to perform dilation
im is the input 2D matrix (uin8, uint16, uint32 or double)
se the structuring element (logical or strel)

grayero(im,se) to perform erosion
im is the input 2D matrix (uin8, uint16, uint32 or double)
se the structuring element (logical or strel)

Memory management is not optimized ( our routines can generate
overflow memory error) but execution time is 2, 3, 4 or 5 times
smaller than MATLAB's one.

Please contribute if you find this software useful.
Report bugs to luigi.rosa@tiscali.it

Cite As

Luigi Rosa (2026). Grayscale Dilation and Erosion (https://www.mathworks.com/matlabcentral/fileexchange/4163-grayscale-dilation-and-erosion), MATLAB Central File Exchange. Retrieved .

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.0.0.0