how to calculate mean without considering the zero in matrix
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I want to calculate MSE of two frames. I am ignoring the nan values by creating a mask associated to the motion compensated frame which has 1 wherever there is a non nan value in mcframe and 0 wherever there is nan. When I caluculate the MSE i only want to caluclate the error where mask is 1. I am using the following code but the value i am getting is pretty high. Not sure if I am doing the right thing here.
Attached are the values of mask, diff and mcframe matrices
mcframe(isnan(mcframe)) = 0;
diff = (mcframe - double(current_pic)).^2;
mse = sum(sum(diff))./sum(sum(mask == 1));
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the cyclist
on 19 May 2020
FYI, it would be much easier for us if you had saved those variables to a *.mat file, and uploaded that.
Answers (1)
the cyclist
on 19 May 2020
Presumably the easiest way to do what you want is to use the nanmean function from the Statistics and Machine Learning Toolbox, or the 'omitnan' input to the mean function.
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