Undefined function 'immse' for input arguments of type 'uint8'.

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raghda aljaff
raghda aljaff 2018-4-24
回答： raghda aljaff 2018-4-25
im1=imread('stallite1.JPG'); figure subplot(1,3,1),imshow(im1),title('original image') ref=rgb2gray(im1); subplot(1,3,2),imshow(ref),title('gray image')
N = imnoise(ref,'salt & pepper', 0.02); subplot(1,3,3),imshow(N),title('noise image') error = immse(N, ref); fprintf('\n The mean-squared error is %0.4f\n', error)

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Guillaume
Guillaume 2018-4-24
immse was introduced in version R2014b and requires the image processing toolbox. If you're on an earlier version or don't have the image processing toolbox, you'll get the error you see.
Since imnoise does not error we can conclude that you're using a version before R2014b.
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raghda aljaff
raghda aljaff 2018-4-24
The upgrade the matlab to R2014b is free or i should pay for that? thanks
Guillaume
Guillaume 2018-4-24

If you're on a software maintenance service then the upgrade (to any version) is free. Otherwise, yes you will have to pay. You're better off contacting mathworks directly with your license number. They'll be able to tell you directly if it's free and if not, how much.

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raghda aljaff
raghda aljaff 2018-4-25
I used the code above exactly and I convert the image 2 double but unfortunately is still the error message (undefined function ‘immse’ for input arguments of type ‘uint8’ ,thanks for help me

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