Save matrix as image format file
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Hi,
I have a matrix with a 61x89x6 double length. I want to save it as a tiff or another image format file. I've checked the help and I've seen that I have to use the multibandwrite comand but it doesn't work.
This is what I'm doing.
% the matrix creation after some operations
image_output(:,:,1)= yl1;
image_output(:,:,2)= yl2;
image_output(:,:,3)= yl3;
image_output(:,:,4)= yl4;
image_output(:,:,5)= yl5;
image_output(:,:,6)= yl7;
%the comand
multibandwrite(image_output,'image_output.bil','bil');
Am I doing something wrong? Really thanks in advance,
댓글 수: 1
Jan
2013년 2월 4일
Please explain the details of "it doesn't work" instead of hoping, that we can guess whats going on. Thanks.
답변 (1개)
Ashish Uthama
2013년 2월 4일
If you have a current version of MATLAB, the Tiff class provides a way to write multi sample image data.
Note: This is a direct interface to LibTIFF, if you need more help, please look up the link in the code below:
%% Write a 61x89x6 double matrix as a TIFF file
data = reshape(1:61*89*6, [ 61 89 6]);
% pref the TIFF object
t = Tiff('output.tif','w');
% http://www.mathworks.com/help/matlab/import_export/exporting-to-images.html
tags.ImageLength = size(data,1);
tags.ImageWidth = size(data,2);
tags.Photometric = Tiff.Photometric.MinIsBlack;
tags.BitsPerSample = 64;
tags.SampleFormat = Tiff.SampleFormat.IEEEFP;
tags.RowsPerStrip = 16;
tags.PlanarConfiguration = Tiff.PlanarConfiguration.Chunky;
tags.SamplesPerPixel = 6;
unspec = Tiff.ExtraSamples.Unspecified;
tags.ExtraSamples = [ unspec, unspec, unspec, unspec, unspec];
t.setTag(tags);
disp(t);
t.write(data);
t.close();
wdata = imread('output.tif');
flag = isequal(data,wdata);
disp(flag);
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