load multipages TIF image

Question

alfonso Davide pinelli 2023-2-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1910975-load-multipages-tif-image

回答： alfonso Davide pinelli 2023-2-16

采纳的回答： Sulaymon Eshkabilov

在 MATLAB Online 中打开

Hello

I'm trying to open a multislices TIF image.

It works in GUI but when used in app designer it read only 1 slice.

What's wrong?

Many thanks for helps

I used this code:

        function LoadImageButtonValueChanged(app, event)
            value = app.LoadImageButton.Value;
            % Selecting image file to process
            [filename, pathname] = uigetfile('*.*', 'pick an image'); % pop up file open dialog to select image
            filename = strcat(pathname,filename);
            info = imfinfo(filename);
            numberOfPages = length(info);
            
            for k = 1 : numberOfPages
                thisPage = imread(filename, k);            
                imshow(imadjust(thisPage),'Parent',app.UIAxes);   %-show the kth image in this multipage tiff file
            end  
         end

2 个评论
显示无隐藏无

Walter Roberson 2023-2-12

在 MATLAB Online 中打开

filename = strcat(pathname,filename);

should be

filename = fullfile(pathname, filename);

uigetfile does not promise that the directory name will have a directory separator at the end of it.

alfonso Davide pinelli 2023-2-12

在 MATLAB Online 中打开

Hello,

thanks for your support.

Still Not working. Command windows state

Warning: The next image file directory at byte position 117206199 is at or beyond the end of the file. 

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Sulaymon Eshkabilov 2023-2-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1910975-load-multipages-tif-image#answer_1169600

在 MATLAB Online 中打开

Here length() does not do the job. therefore, it is better to use tiffreadVolume()

Here is the corrected code:

        function LoadImageButtonValueChanged(app, event)
            value = app.LoadImageButton.Value;
            % Selecting image file to process
            [filename, pathname] = uigetfile('*.*', 'pick an image'); % pop up file open dialog to select image
            filename = strcat(pathname,filename);
            info = tiffreadVolume(filename);
            Size_Tiff = size(info);
            numberOfPages = Size_Tiff(4);
            for k = 1 : numberOfPages
                thisPage = imread(filename, k);            
                imshow(imadjust(thisPage),'Parent',app.UIAxes);   %-show the kth image in this multipage tiff file
            end  
         end

11 个评论
显示 9更早的评论隐藏 9更早的评论

alfonso Davide pinelli 2023-2-14

在 MATLAB Online 中打开

I'm looking if I may share the file (it is not mine) but I can share attribute

              FileModDate: '24-gen-2023 14:33:04'
                     FileSize: 36905109
                       Format: 'tif'
                FormatVersion: []
                        Width: 512
                       Height: 512
                     BitDepth: 8
                    ColorType: 'grayscale'
              FormatSignature: [73 73 42 0]
                    ByteOrder: 'little-endian'
               NewSubFileType: 0
                BitsPerSample: 8
                  Compression: 'Uncompressed'
    PhotometricInterpretation: 'BlackIsZero'
                 StripOffsets: 27831
              SamplesPerPixel: 1
                 RowsPerStrip: 512
              StripByteCounts: 262144
                  XResolution: []
                  YResolution: []
               ResolutionUnit: 'Inch'
                     Colormap: []
          PlanarConfiguration: 'Chunky'
                    TileWidth: []
                   TileLength: []
                  TileOffsets: []
               TileByteCounts: []
                  Orientation: 1
                    FillOrder: 1
             GrayResponseUnit: 0.0100
               MaxSampleValue: 255
               MinSampleValue: 0
                 Thresholding: 1
                       Offset: 8
             ImageDescription: 'ImageJ=1.47v↵images=447↵slices=447↵loop=false↵min=0.0↵max=3.0↵'
                  UnknownTags: [2×1 struct]

Steve Eddins 2023-2-14

Without a sample file to examine, I can only guess. Based on the imfinfo output you posted, as well as Walter Roberson's comments, I guess that the slice data is hidden inside private TIFF tags created by ImageJ. See the ImageDescription and UnknownTags fields of the output of imfinfo. If that is really the case, then it will require custom code to convert the private tag ImageJ data. I'm not familiar with the method of storing extra slice data in a TIFF file, so I'm not sure how difficult it might be.

Walter Roberson 2023-2-14

在 MATLAB Online 中打开

@alfonso Davide pinelli

You need to be careful using length(). length(A) is defined as

if isempty(A)
    length is 0
else
    length is max(size(A))
end

We see from your previous comments that size() of the tiffreadVolume is [512 512] . length() of that is not the number of pages: length() is going to be max([512 512]) which would be 512

Number of pages would, in the specific case of tiffreadVolume, be size(info,3) -- which would be 1 for that file.

请先登录，再进行评论。