source: trunk/src/transform_field/ima_ratio.m @ 742

Last change on this file since 742 was 728, checked in by sommeria, 11 years ago

ima_ratio added to transform_field: calculate the ratio between two images

File size: 1.2 KB
Line 
1%'ima_ratio': take the ratio of two input images with same size
2%
3% the two fields are subtstracted when of the same nature (scalar or
4% vector), if the coordinates do not coincide, the second field is
5% interpolated on the cooridintes of the first one
6%
7% when scalar and vectors are combined, the fields are just merged in a single matlab structure for common visualisation
8%-----------------------------------------------------------------------
9% function SubData=sub_field(Field,XmlData,Field_1)
10%
11% OUPUT:
12% SubData: structure representing the resulting field
13%
14% INPUT:
15% Field: matlab structure representing the first field
16% XmlData: input calibration parameter, not used
17% Field_1:matlab structure representing the second field
18
19function DataOut=ima_ratio(DataIn,XmlData,DataIn_1)
20
21%% option to introduce input parameters when function is selected, skipped here
22DataOut=DataIn;
23if ~isstruct(DataOut)
24%     if ~isfield(DataIn,'A')
25%         msgbox_uvmat('ERROR','ima_ratio requires two images of the same size as input')
26    return
27    end
28
29
30%% actual calculation
31if exist('DataIn_1','var')
32    DataIn_1.A(DataIn_1.A==0)=1;
33    DataOut.A=double(DataIn.A)./double(DataIn_1.A);
34end
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