How can I resolve the following error?

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Syed Zenith Rhyhan
Syed Zenith Rhyhan 2018-9-17
编辑： KALYAN ACHARJYA 2018-9-17
ref = imread('6.jpg'); imshow(ref) A = imnoise(ref,'salt & pepper', 0.02); imshow(A) err = immse(A, ref); fprintf('\n The mean-squared error is %0.4f\n', err);
::::::::::Error:::::::::
Undefined function 'immse' for input arguments of type 'uint8'. Error in main (line 17) err = immse(I, im); >>

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KALYAN ACHARJYA
KALYAN ACHARJYA 2018-9-17
编辑：KALYAN ACHARJYA 2018-9-17
ref=imread('test.jpg'); % Change the image Name
figure, imshow(ref), title('Input Image');
A=imnoise(ref,'salt & pepper', 0.02);
figure,imshow(A), title('InputImage with Noise');
err=immse(A,ref);
fprintf('\n The mean-squared error is %0.4f\n',err);
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KALYAN ACHARJYA
KALYAN ACHARJYA 2018-9-17
Which Matlab version you are using?
This function imse(Mean Square Error) was introduced in 2014b onwards.
KALYAN ACHARJYA
KALYAN ACHARJYA 2018-9-17
编辑：KALYAN ACHARJYA 2018-9-17
Welcome! Happy to Help You!
Regards,
Kalyan Acharjya

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