How can I convert a DICOM image to a jpeg image or bmp image?

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Said BOUREZG
Said BOUREZG 2015-2-27
编辑： Rance Tino 2018-1-26
In my project, I need an medical images in bmp form, but the problem they didn't exist with that form, so I must convert a DICOM image format to bmp, I have write the code but a problem stop when I want to save X,MAP obtained, X is int16, than what should I do?.
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Walter Roberson
Walter Roberson 2017-1-26
If the returned MAP is non-empty then you need to
X = ind2rgb(X, MAP);
If you are certain that the returned MAP will be empty then you should not return it as an output from DICOMREAD.

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Image Analyst
Image Analyst 2015-2-27
Why do you need them in that form? You can read the DICOM images in to your m-file with dicomread() so why do you need to read them in from a BMP with imread()?
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Image Analyst
Image Analyst 2015-3-1
Regarding your "Answer", if you want it to be uint8(), use mat2gray():
image8 = uint8(255 * mat2gray(X));
imshow(image8, []);
Said BOUREZG
Said BOUREZG 2015-3-1
编辑：Said BOUREZG 2015-3-1
Yes, it works, thank u very much sir.. I hope that you will find the Eternal happiness source Sorry I was not here to see your last answer.

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更多回答（2 个）

Image Analyst
Image Analyst 2015-3-1
Said, try this:
[filename, pathname] = uigetfile('*.dcm', 'Open DICOM Image');
if isequal(filename, 0) || isequal(pathname, 0)
uiwait(helpdlg('Image reading canceled.'));
else
[X,MAP]=dicomread(fullfile(pathname, filename));
subplot(1,2,1);
imshow(X, []);
title('16 bit image.', 'FontSize', 30);
% Convert to 8 bit.
image8 = uint8(255 * mat2gray(X));
subplot(1,2,2);
imshow(image8, []);
title('8 bit image.', 'FontSize', 30);
imwrite(image8,'myfile.bmp');
end
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david martinez
david martinez 2017-7-1
I get this error
Error using images.internal.imageDisplayValidateParams>validateCData (line 115) Multi-plane image inputs must be RGB images of size MxNx3.
Error in images.internal.imageDisplayValidateParams (line 27) common_args.CData = validateCData(common_args.CData,image_type);
Error in images.internal.imageDisplayParseInputs (line 78) common_args = images.internal.imageDisplayValidateParams(common_args);
Error in imshow (line 240) images.internal.imageDisplayParseInputs({'Parent','Border','Reduce'},preparsed_varargin{:});
Error in untitled111 (line 7) imshow(X, []);
the image is multiplanar, some idea
Walter Roberson
Walter Roberson 2017-7-1
You cannot use imshow() to display more than 3 planes of a multiplanar image.
You need to use a volume viewer such as volumeViewer (R2017a or later), or you need to treat the planes as slices to be displayed, such as getting imdisp() or its follow-on SC from the File Exchange and using
imdisp(reshape(X, size(X,1), size(X,2), 1, size(X,3)))

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Said BOUREZG
Said BOUREZG 2015-3-1
yes, imwrite() work, but the image (.bmp) can't appear, X matrix before imwrite values are int16 so the range is not 0 to 255, so here when I save it as bmp I see only black and white. the dicom image is attached, run it and tell me

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