dicom_encode_jpeg2000_lossy.m
1ba0b9dff245Bashardoust_SystCoord

dicom_encode_jpeg2000_lossy.m
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			function [fragments, frames] = dicom_encode_jpeg2000_lossy(X, bits)
			%DICOM_ENCODE_JPEG2000_LOSSY Encode pixel cells using lossy JPEG.
			% [FRAGMENTS, LIST] = DICOM_ENCODE_JPEG2000_LOSSY(X) compresses and
			% encodes the image X using lossy JPEG2000 compression. FRAGMENTS is
			% a cell array containing the encoded frames (as UINT8 data) from the
			% compressor. LIST is a vector of indices to the first fragment of
			% each compressed frame of a multiframe image.
			%
			% See also DICOM_ENCODE_RLE, DICOM_ENCODE_JPEG2000_LOSSY.

			% Copyright 2010 The MathWorks, Inc.


			% Use IMWRITE to create a JPEG2000 image.

			numFrames = size(X,4);
			fragments = cell(numFrames, 1);
			frames = 1:numFrames;

			for p = 1:numFrames

			tempfile = tempname;
			imwrite(X(:,:,:,p), tempfile, 'j2c', 'mode', 'lossy');

			% Read the image from the temporary file.
			fid = fopen(tempfile, 'r');
			fragments{p} = fread(fid, inf, 'uint8=>uint8');
			fclose(fid);

			% Remove the temporary file.
			try
			delete(tempfile)
			catch
			warning(message('images:dicom_encode_jpeg2000_lossy:tempFileDelete', tempfile));
			end

			end