Global Threshold computation using Otsu's Method

Global Threshold computation using Otsu's Method

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Computes the global image threshold using Otsu's method by minimizing the
inter-class variance.
Inputs:

histogramCounts : is the histogram data of the image, that can be calculated
using `imhist` function.

total: is the total number of pixels that can be counted using the
`numel` function.

Output:
ll : is the level of the global threshold in [0 1]

Example:

consider the grayscale image is Ig

>> otsu(imhist(Ig),numel(Ig))
>> 04414

Cite As

Reza Ahmadzadeh (2026). Global Threshold computation using Otsu's Method (https://au.mathworks.com/matlabcentral/fileexchange/52437-global-threshold-computation-using-otsu-s-method), 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