使用imwrite保存tif 32位图像 [英] save tif 32 bit images by using imwrite

问题描述

我正在尝试将我的图像保存为tif 32位但我收到此错误：

I'm trying to save my images as tif 32 bits but I got this error:

Cannot write uint32 data to a TIFF file

这是我的代码：

for k=1:10

    Id{k} = waverec2(t_C,L,'sym8');
    filename= ['C:\Path \Id_number_' num2str(k) '.tif'];
    Id{k}=uint32(Id{k});
    imwrite(Id{k},filename);

end 

我需要将图像保存为tif 32位。有什么想法？

I need to save my images as tif 32 bits. Any idea?

for k=1:10

        Id{k} = waverec2(t_C,L,'sym8');
        filename= ['C:\Path \Id_number_' num2str(k) '.tif'];
        t = Tiff('filename','a')
    Id{k}=uint32(Id{k});
    t.write(Id{k});
end

但在Matlab下我收到此错误：

but under Matlab I got this error :

Error using tifflib
Unable to retrieve ImageLength.

    Error in Tiff/getTag (line 784)
                        tagValue = tifflib('getField',obj.FileID,Tiff.TagID.(tagId));

    Error in Tiff/writeAllStrips (line 1660)
                h = obj.getTag('ImageLength');

    Error in Tiff/write (line 1228)
                    obj.writeAllStrips(varargin{:});

推荐答案

虽然TIFF格式支持 uint32 ，Matlab没有。接受的intput类是double，single，uint8，uint16或logical。

Although the TIFF format does support uint32, Matlab does not. Accepted intput classes are double, single, uint8, uint16, or logical.

如果您可以接受丢失精度，则可以将其转换为 uint16 （使用 im2uint16 ）。如果不是，您可以使用 im2double 将其转换为 double 。请注意 im2double 与 double（your_uint16_image）不同，所以要小心。

If you losing precision is acceptable to you, you can convert it to uint16 (use im2uint16). If it is not, you can convert it to double with im2double. Note that im2double is not the same as double (your_uint16_image) so be careful with it.

如果这些选项都不可接受，您可能需要使用libtiff编写自己的mex代码或使用Octave（这将需要使用量子深度32构建的GraphicsMagick）。

If none of those options are acceptable, you might need to write your own mex code using libtiff or use Octave (which will require GraphicsMagick built with quantum depth 32).

编辑：显然还有一个新的TIFF类（见下面的答案），它提供了一个直接接口。

apparently there is also a new TIFF class (see answer below) which gives a direct interface to it.

这篇关于使用imwrite保存tif 32位图像的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！