Question

我想在读完MATLAB后再写一个tiff。 tiff文件由其他一些软件生成：

[flnm,locn]=uigetfile({'*.tif','Image files'}, 'Select an image');       
fp=fullfile(locn,flnm);        
I = double(imread(fp));    
info = imfinfo(fp);



.   
.
.

J2 = im2int16(J2);       
J2(:,:) = uint16((J2(:,:)./max(max(J2(:,:),[],1)))*65536);       

T = Tiff((fullfile(strcat(locn,v_f), (sprintf('%d.tif',i)))), 'w');        

tagstruct.ImageLength = size(J2, 1);         
tagstruct.ImageWidth = size(J2, 2);        
tagstruct.Compression = Tiff.Compression.None;        
tagstruct.SampleFormat = Tiff.SampleFormat.Int;         
tagstruct.Photometric = Tiff.Photometric.MinIsBlack;         
tagstruct.BitsPerSample = info.BitsPerSample; % 32;         
tagstruct.SamplesPerPixel = info.SamplesPerPixel; % 1;         
tagstruct.PlanarConfiguration = Tiff.PlanarConfiguration.Chunky;         
T.setTag(tagstruct);         
T.write(J2);         
T.close();

这条线应该重新调整强度范围：

J2(:,:) = uint16((J2(:,:)./max(max(J2(:,:),[],1)))*65536);

是从这里借来的：https://stackoverflow.com/a/19949536/3319527。但我的照片仍然是黑色的。这不应该是这种情况，因为虽然信号很嘈杂但是输出到屏幕的数据是有意义的但是我写入文件的tiff很没用。

图像参数：

Filename: [1x172 char]
                  FileModDate: '24-Jan-2014 14:39:09'
                     FileSize: 32003
                       Format: 'tif'
                FormatVersion: []
                        Width: 125
                       Height: 125
                     BitDepth: 16
                    ColorType: 'grayscale'
              FormatSignature: [73 73 42 0]
                    ByteOrder: 'little-endian'
               NewSubFileType: 0
                BitsPerSample: 16
                  Compression: 'Uncompressed'
    PhotometricInterpretation: 'BlackIsZero'
                 StripOffsets: [8 2008 4008 6008 8008 10008 12008 14008 16008 18008 20008 22008 24008 26008 28008 30008]
              SamplesPerPixel: 1
                 RowsPerStrip: 8
              StripByteCounts: [2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 2000 1250]
                  XResolution: 72
                  YResolution: 72
               ResolutionUnit: 'Inch'
                     Colormap: []
          PlanarConfiguration: 'Chunky'
                    TileWidth: []
                   TileLength: []
                  TileOffsets: []
               TileByteCounts: []
                  Orientation: 1
                    FillOrder: 1
             GrayResponseUnit: 0.0100
               MaxSampleValue: 65535
               MinSampleValue: 0
                 Thresholding: 1
                       Offset: 31768
             ImageDescription: '

来自tiff info：

TIFF File: '000001.tif'
                       Mode: 'r'
    Current Image Directory: 1
           Number Of Strips: 16
                SubFileType: Tiff.SubFileType.Default
                Photometric: Tiff.Photometric.MinIsBlack
                ImageLength: 125
                 ImageWidth: 125
               RowsPerStrip: 8
              BitsPerSample: 16
                Compression: Tiff.Compression.None
               SampleFormat: Tiff.SampleFormat.UInt
            SamplesPerPixel: 1
        PlanarConfiguration: Tiff.PlanarConfiguration.Chunky
           ImageDescription: 

This is frame #0000           
                Orientation: Tiff.Orientation.TopLeft

谢谢！

写TIFF出现黑色但imagesc不是MATLAB

0 个答案: