source: trunk/src/transform_field/ima_erode_particles.m @ 899

% 'ima_remove_particles': removes particles from an image (keeping the local minimum)
% requires the Matlab image processing toolbox
%------------------------------------------------------------------------
%%%%  Use the general syntax for transform fields with a single input %%%%
% OUTPUT: 
% DataOut:   output field structure 
%
%INPUT:
% DataIn:  first input field structure

%=======================================================================
% Copyright 2008-2014, LEGI UMR 5519 / CNRS UJF G-INP, Grenoble, France
%   http://www.legi.grenoble-inp.fr
%   Joel.Sommeria - Joel.Sommeria (A) legi.cnrs.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_remove_particles(DataIn)
%------------------------------------------------------------------------
DataOut=[];  %default  output field
if strcmp(DataIn,'*')
    return
end

%parameters
radius=2;
SE=strel('disk',2);
%--------------------------------------------------------- 
DataOut=DataIn;%default

if ~isfield(DataIn,'A')
    DataOut.Txt='remove_particles only valid for input images';
    return
end

%BACKGROUND LEVEL
Atype=class(DataIn.A);
DataOut.A=imerode(DataIn.A,SE);
% DataOut.A=feval(Atype,DataOut.A);