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trying to average some tiff's images

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Hi i'm trying to average 5 tiff images, i'm not sure if im doing it correctly?
A=5
ysize= 2368;
xsize= 2240;
dark = zeros(ysize,xsize);
[darklist,~] = uigetfile({'*.jpg;*.tif;*.png;*.gif','All Image Files';...
'*.*','All Files'},'Select the dark image(s)','MultiSelect', 'on');
for k = 1:A
if(~iscell(darklist))
imtemp = imread(darklist);
else
dark = imread(darklist{k});
doubletemp=double(imtemp);
end
averagedark = (doubletemp+dark)./A;
% ;Average dark images
end
is this correct? they are CT images, and each image took is around 20 frames.. if that can be of any use?

Accepted Answer

Image Analyst
Image Analyst on 6 Sep 2017
No, it's not correct. Not even very close. See my attached example. Adapt as needed.

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