Hysteresis Thresholding

C implementation of Hysteresis Thresholding
Updated 27 May 2008

View License

This function takes as parameters a grayscale image (real valued matrix of size x*w*1) and two thresholds (low and high), and returns the hysteresis thresholded version.

Hysteresis thresholding performs the following:
- every value below tLo is set to 0
- every value above tHi is set to 1
- the rest of the pixels are set to 1 if they are 4-way connected to any other 1-valued blob (area), 0 otherwise

It should be pretty straightforward to implement an 8-way connection check, if you want.

To compile and use perform the following:
mex hysteresis.c

Cite As

Massimo Fierro (2024). Hysteresis Thresholding (https://www.mathworks.com/matlabcentral/fileexchange/20009-hysteresis-thresholding), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R13
Compatible with any release
Platform Compatibility
Windows macOS Linux

Inspired: Circular Matrix computation

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!
Version Published Release Notes

Corrected a type in the title