1 | %'ima_ratio': take the ratio of two input images with same size
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2 | %
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3 | % the two fields are subtstracted when of the same nature (scalar or
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4 | % vector), if the coordinates do not coincide, the second field is
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5 | % interpolated on the cooridintes of the first one
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6 | %
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7 | % when scalar and vectors are combined, the fields are just merged in a single matlab structure for common visualisation
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8 | %-----------------------------------------------------------------------
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9 | % function SubData=sub_field(Field,XmlData,Field_1)
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10 | %
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11 | % OUPUT:
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12 | % SubData: structure representing the resulting field
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13 | %
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14 | % INPUT:
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15 | % Field: matlab structure representing the first field
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16 | % XmlData: input calibration parameter, not used
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17 | % Field_1:matlab structure representing the second field
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18 |
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19 | %=======================================================================
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20 | % Copyright 2008-2014, LEGI UMR 5519 / CNRS UJF G-INP, Grenoble, France
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21 | % http://www.legi.grenoble-inp.fr
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22 | % Joel.Sommeria - Joel.Sommeria (A) legi.cnrs.fr
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23 | %
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24 | % This file is part of the toolbox UVMAT.
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25 | %
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26 | % UVMAT is free software; you can redistribute it and/or modify
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27 | % it under the terms of the GNU General Public License as published
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28 | % by the Free Software Foundation; either version 2 of the license,
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29 | % or (at your option) any later version.
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30 | %
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31 | % UVMAT is distributed in the hope that it will be useful,
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32 | % but WITHOUT ANY WARRANTY; without even the implied warranty of
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33 | % MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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34 | % GNU General Public License (see LICENSE.txt) for more details.
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35 | %=======================================================================
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36 |
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37 | function DataOut=ima_ratio(DataIn,XmlData,DataIn_1)
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38 |
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39 | %% option to introduce input parameters when function is selected, skipped here
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40 | DataOut=DataIn;
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41 | if ~isstruct(DataOut)
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42 | % if ~isfield(DataIn,'A')
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43 | % msgbox_uvmat('ERROR','ima_ratio requires two images of the same size as input')
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44 | return
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45 | end
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46 |
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47 |
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48 | %% actual calculation
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49 | if exist('DataIn_1','var')
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50 | DataIn_1.A(DataIn_1.A==0)=1;
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51 | DataOut.A=double(DataIn.A)./double(DataIn_1.A);
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52 | end
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