MATLAB: How to write tiff stacks with single precision

MATLABtiff img

I have two tiff stack images('a.tif' and 'b.tif'). Each of them have 2 stacks(512*512, grayscale). I want to write the result of a./b in single mode precision with Tiff class. I can get the result (result.zip) with other ImageJ, but failed to do it in Matlab. How can I do this?

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http://www.mathworks.com/matlabcentral/answers/7184-how-can-i-write-32-bit-floating-point-tifs-with-nans

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MATLAB: How to write 32-bit floating point TIFs with NaNs

I suggest using the Tiff class and specifying RGB for the Photometric and specifying 32 bits per channel and writing single precision values.

http://www.mathworks.com/help/matlab/ref/tiff-class.html

This is based upon the assumption that you want the channel values themselves to be NaN, rather than setting the Alpha value to be NaN for the dead pixels.

MATLAB: How to save a series of images (.tiff) as a stack

        t=Tiff('Stacked.tiff','w');
        tagstruct.ImageLength = y1; % image height
        tagstruct.ImageWidth = x1; % image width
        tagstruct.Photometric = Tiff.Photometric.RGB; % https://de.mathworks.com/help/matlab/ref/tiff.html
        tagstruct.BitsPerSample = 8;
        tagstruct.SamplesPerPixel = 3;
        tagstruct.PlanarConfiguration = Tiff.PlanarConfiguration.Chunky; % groups rgb values into a single pixel instead of saving each channel separately for a tiff image
        tagstruct.Software = 'MATLAB';
        setTag(t,tagstruct)
        write(t,squeeze(im2uint8(Imagelayer1)));
        
        writeDirectory(t);
        setTag(t,tagstruct)
        write(t,squeeze(im2uint8(Imagelayer2))) %%%appends the next layer to the same file t
        
        % do this for as many as you need, or put it in a loop if you can
        close(t) %%% this is necessary otherwise you won't be able to open it in imageJ etc to double check, unless you close matlab

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Related Solutions

MATLAB: How to write 32-bit floating point TIFs with NaNs

MATLAB: How to save a series of images (.tiff) as a stack

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