MATLAB: How to convert dicom image to png

digital image processingimageimage acquisitionimage analysisimage processingImage Processing Toolboximage segmentation

Hi all,

i want to convert my dicom image to png image.

below my coding, but error. Anyone can help me?

[I, map]=dicomread('lung.dcm');
imwrite(I,map,'lung.png','png');

ERRORR!!!!

Error using imwrite>parse_inputs (line 628)
The colormap should have three columns.
Error in imwrite (line 440)
[data, map, filename, format, paramPairs] = parse_inputs(varargin{:});

CAN HELP ME?

Best Answer

I imagine you looked at what map was. Did that not give you any clue as to why it was not 3 columns? What was it? Maybe it's empty, in which case you'd not pass it in to imwrite.

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MATLAB: How to change colortype truecolor to grayscale

You have to display the gray scale image with imshow() after you do the conversion.

grayImage = rgb2gray(rgbImage);
imshow(grayImage, []);  % You probably forgot to do this step.

MATLAB: Error while using rgb2gray

Color images don't have a colormap. Try this

fontSize = 20;
for k = 1:10
   tifFilename = sprintf('%d.tif', k);
   if ~exist(tifFilename, 'file')
      fprintf('%s not found.\n', tifFilename);
      continue;
   end
   rgbImage = imread(tifFilename);
   grayImage = rgb2gray(rgbImage );
   BW = edge(grayImage ,'sobel');
   subplot(2,2,1);
   imshow(rgbImage);
   title('Color Image', 'FontSize', fontSize);
   subplot(2,2,2);
   imshow(grayImage );
   title('Grayscale Image', 'FontSize', fontSize);
   subplot(2,2,3);
   imshow(BW);
   title('Binary Edge Image', 'FontSize', fontSize);
end

Best Answer

Related Solutions

MATLAB: How to change colortype truecolor to grayscale

MATLAB: Error while using rgb2gray

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