Index: trunk/src/transform_field/ima_rescale.m
===================================================================
--- trunk/src/transform_field/ima_rescale.m	(revision 1175)
+++ trunk/src/transform_field/ima_rescale.m	(revision 1175)
@@ -0,0 +1,56 @@
+% 'ima_green': take the gree component of a color image
+%------------------------------------------------------------------------
+%%%%  Use the general syntax for transform fields with a single input %%%%
+% OUTPUT: 
+% DataOut:   output field structure 
+%
+%INPUT:
+% DataIn:  first input field structure
+
+%=======================================================================
+% Copyright 2008-2024, LEGI UMR 5519 / CNRS UGA G-INP, Grenoble, France
+%   http://www.legi.grenoble-inp.fr
+%   Joel.Sommeria - Joel.Sommeria (A) univ-grenoble-alpes.fr
+%
+%     This file is part of the toolbox UVMAT.
+%
+%     UVMAT is free software; you can redistribute it and/or modify
+%     it under the terms of the GNU General Public License as published
+%     by the Free Software Foundation; either version 2 of the license,
+%     or (at your option) any later version.
+%
+%     UVMAT is distributed in the hope that it will be useful,
+%     but WITHOUT ANY WARRANTY; without even the implied warranty of
+%     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+%     GNU General Public License (see LICENSE.txt) for more details.
+%=======================================================================
+
+function DataOut=ima_rescale(DataIn,Param)
+
+%% request input parameters
+if isfield(DataIn,'Action') && isfield(DataIn.Action,'RUN') && isequal(DataIn.Action.RUN,0)
+    prompt = {'SaturationValue'};
+    dlg_title = 'get the maximum image value';
+    num_lines= 1;
+    def     = { '1024'};
+    if isfield(Param,'TransformInput')&&isfield(Param.TransformInput,'SaturationValue')
+        def={num2str(Param.TransformInput.SaturationValue)};
+    end
+    answer = inputdlg(prompt,dlg_title,num_lines,def);
+    DataOut.TransformInput.SaturationValue=str2num(answer{1}); %size of the filtering window
+    return
+end
+
+Coeff=Param.TransformInput.SaturationValue;
+DataOut=DataIn; %default
+if isfield(DataOut,'A')
+    DataOut.A=uint16(Coeff*tanh(double(DataOut.A)/Coeff));
+end
+if isfield(DataOut,'ImageA')
+    DataOut.ImageA=uint16(Coeff*tanh(double(DataOut.ImageA)/Coeff));
+end
+if isfield(DataOut,'ImageB')
+    DataOut.ImageB=uint16(Coeff*tanh(double(DataOut.ImageB)/Coeff));
+end
+
+