using matlab 20202b -- how to find the MSE of Matrix of uint8 of size 586*879

the matrix is having the elemeents like

10 37 34 22

0 33 49 40

0 27 43 32

7 15 22 18

0 7 21 25

[KALYAN ACHARJYA]

Where is the reference data matrix?

[savita sheelavant]

I have shared part of a matrix not complete one. Size is more so

[Image Analyst]

Error from what??? What is the ground truth?

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Without that about all I can say is to try the immse() function.