I cannot read the last image of a multipage tiff created in Matlab.
8 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I receive the error below when attempting to access the last image in a multipage Tiff file I have written in Matlab. I can access all the other directories. Thank you for any suggestions or explanations.
Error using tifflib
Unable to change to directory with dirnum = 3.
Error in Tiff/setDirectory (line 1277)
tifflib('setDirectory',obj.FileID,dirNum-1);
The code below duplicates the issue I am having.
t=Tiff('test.tiff','w');%initialize tiff
testImage=ones(10,'uint16');%data to write
tagstruct.ImageLength = 10;
tagstruct.ImageWidth = 10;
tagstruct.Photometric = Tiff.Photometric.MinIsBlack;
tagstruct.BitsPerSample = 16;
tagstruct.SamplesPerPixel = 1;
tagstruct.Compression = Tiff.Compression.PackBits;
tagstruct.PlanarConfiguration = Tiff.PlanarConfiguration.Chunky;
%begin writing tiff
%image 1
t.setTag(tagstruct);
t.write(testImage);
%image 2
t.writeDirectory();
t.setTag(tagstruct);
t.write(testImage+1);
%image 3
t.writeDirectory();
t.setTag(tagstruct);
t.write(testImage+2);
%go back to each image and read out the values there
%the value should correspond to the image number
t.setDirectory(1);
testImageOut=t.read();
disp(['image value: ',num2str(max(testImageOut(:)))]);
t.setDirectory(2);
testImageOut=t.read();
disp(['image value: ',num2str(max(testImageOut(:)))]);
t.setDirectory(3);
testImageOut=t.read();
disp(['image value: ',num2str(max(testImageOut(:)))]);
The output from this is:
image value: 1
image value: 2
Error using tifflib
Unable to change to directory with dirnum = 3.
Error in Tiff/setDirectory (line 1277)
tifflib('setDirectory',obj.FileID,dirNum-1);
0 Kommentare
Antworten (1)
Mann Baidi
am 23 Jul. 2024
You are getting the error because there are are only 2 IFD in the TIFF file mentioned above. You called writeDirectory two times, hence only 2 directories are being created.
You can check the number of IFD in a TIFF image using the following code:
info=imfinfo('<filename>.tiff');
numel(info)
You can explore more about imfinfo function using the below link:
0 Kommentare
Siehe auch
Kategorien
Mehr zu Image Data finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!