Undefined function or variable 'imnlmfilt'

Hello, I'm getting the "Undefined function or variable 'imnlmfilt'" error message, despite being certain that this is actually a matlab function - it just doesn't seem to be installed with my Matlab. I'm using Matlab R2017a, because for some reason my dying computer won't let me download anything newer, and I have a student license - could that be the problem? (and if yes, any way to get around it?)

That code segment looks like this :

% Preparing images

image_name_1 = horzcat(image_name_base, num2str(a, image_name_index), image_format);

image_name_2 = horzcat(image_name_base, num2str((a + 1), image_name_index), image_format);

I1 = imread(image_name_1);

I2 = imread(image_name_2);

K1 = imcrop(I1, image_area);

K2 = imcrop(I2, image_area);

if RunPIV

J1 = imnlmfilt(K1); %

J2 = imnlmfilt(K2); % Reduce noise by non-local means filter

if masking

BW1 = segmentImage1210(J1);

BW2 = segmentImage1210(J2);

end

Answer 1

[madhan ravi]

It requires Image Processing Toolbox and a valid license for it. Contact your IT department in your University to get the license.

Answer 2

[Image Analyst]

It was introduced in R2018b. Try to upgrade.

[Anna Clouvel-Gervaiseau]

Thanks a lot for your response, I'm using an older mac and for some reason itll prevent me from downloading any too recent Matlab versions