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5.8 Morphology
These menu items implement basic morphological operations. Images are zero
for background and non-zero (usually 255) for object. Matricies are shown as
0, 1 and * for background, object and don't-care.
- Dilate8, etc.
- Four- and eight-connected erode and dilate.
- Open, etc.
- Simple pre-defined morphologies. Clean removes isolated single
pixels.
- Dilate, Erode
- Dilate or erode with a matrix. Make a suitable matrix with
New_matrix=>Morphology.
- Dilate_multiple, etc.
- Dilates a matrix with itself
times.
- Custom_morphology
- Use this to make your own morphological operator. Select an image,
click on Custom_morphology, open up the new row and adjust the
parameters.
- Find_profile
- Handy for analysing the result of a morphology. Search in from the
image edges for the first non-zero pixel, producing a profile
histogram. One band 8-bit only. Open the row to adjust the search
parameters.
- Count_lines
- Counts the average number of black-to-white transitions across or down
an image. Open the row to change the search direction.
See also Count_set and Count_clear in the Statistics menu.
Next: 5.9 Mosaic
Up: 5. Image processing menus
Previous: 5.7 Math
  Contents
John Cupitt
2003-07-21