David Haberthür
66 lines
2.0 KiB
Matlab
66 lines
2.0 KiB
Matlab
function writeDumpImage(image, file, format, noScaling)
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% Writes dump file to disk.
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% function writeDumpImage(image, file, format, noScaling)
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%
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% INPUT PARAMETERS
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% 'file' is the filename where to write the image.
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% 'image' is an array width x height containing the image data, which
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% must either be of type 'float32' or 'uint16'.
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% 'format' is 'dmp' or one of the formats supported by imwrite. A
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% commonly used format is 'tiff'. If the format is 'dmp', the image
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% is saved in the dump format (6 bytes header + image data),
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% where as the image data is saved as float32.
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% 'noScaling' For image formats other than DMP, scaling is applied
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% before saving the image. If this option is 1, this scaling can
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% be suppressed.
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% Author: Stefan Heinzer, IBT ETH/Uni Zurich
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% Date : Dec 2003
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%--------------------------------------------------------------------------
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% Check arguments, prepare parameters needed
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%--------------------------------------------------------------------------
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if nargin < 1
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error('please submit image data');
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end
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if nargin < 3
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format = 'dmp';
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else
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if strcmp(format, 'DMP')
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format = 'dmp';
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end
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end
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if nargin < 4
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noScaling = 0;
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end
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if nargin < 1
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file = ['dump.' format];
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end
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%--------------------------------------------------------------------------
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% write file according to format
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%--------------------------------------------------------------------------
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if strcmp(format, 'dmp')
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fid = fopen(file, 'w');
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if fid == -1
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error(['failed to open/create ' file]);
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end
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[height, width] = size(image);
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fwrite(fid, width, 'uint16');
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fwrite(fid, height, 'uint16');
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fwrite(fid, 0, 'uint16');
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fwrite(fid, image', 'float32');
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status=fclose(fid);
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if status == -1
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error(['failed to close ' file]);
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end
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else
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minVal = min(min(image));
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maxVal = max(max(image));
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% image = double(image);
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image = (image - minVal*ones(size(image)))/(maxVal-minVal);
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imwrite(image, file, format);
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end
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