MATLAB: Analysing a few .tiff files

Question

I have a bunch of .tiff files that are pictures of a diffraction pattern evolving with time. Each file is an array 480×640 where each entry in the array is an intensity value.

I want to load the .tiff files automatically into Matlab and obtain the total intensity for each file by adding each entry together until the total is reached. I want these total values to be remembered and at the end the total intensities are recalled and plotted as intensity vs. time.

I know how to load up an individual .tiff file using the imread function. I have spent a lot of time trying to figure out what commands I need but haven’t gotten far.

Does anyone have any thoughts on my problem please? Any help would be greatly appreciated.

Answer 1

Are the different time slices stored in different TIFF files? Then try something like this:

d = dir('myfiles*.tiff');
total = zeros(480,640);
for k = 1:length(d)
  I = imread(d(k).name);
  total = total + double(I);
end

Or are the different time slices all stored in a single TIFF file? Then try something like this:

total = zeros(480,640);
info = imfinfo('myfile.tiff');
num_slices = length(info);
for k = 1:num_slices
  I = imread('myfile.tiff','Info',info,'Index',k);
  total = total + double(I);
end