MATLAB Answers

Probelm in implementing Adaptive Histogram Equalization

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Ghulam
Ghulam on 8 Oct 2019
Answered: Image Analyst on 8 Oct 2019
Hi,
I am trying to implement Contrast Limited Adaptive Historgram Equalization an image using the command adapthisteq(I) but i am getting error like
"Error using adapthisteq
Expected input number 1, I, to be two-dimensional."
I have attached my image here, can anyone pls guide me the problem with it.
Note: since the file format of tif is not supported in the attachment, therefore i am attaching jpg format of my file.
Thanks

Answers (2)

Stephan
Stephan on 8 Oct 2019
Edited: Stephan on 8 Oct 2019

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Ghulam
Ghulam on 8 Oct 2019
Thanks Stephan,
I also think that the issue is of dimensions, when i have converted the image into Gray image. there was no error and i was able to apply the CLAHE.

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Image Analyst
Image Analyst on 8 Oct 2019
Before calling adapthisteq(), cast the image to gray level if it's not already:
if ndims(I) == 3
I = rgb2gray(I)
end

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