function varargout = MasqueContours1D(varargin)
% Masque de contours par filtrage linéaire spatial 1D
% Traitement marginal des images à P plans
% 
% INPUT:
% - image PxQ
% - valeur texte opération : 'sobel' | 'prewitt' | 'roberts' | 'log' | 'canny' | 'zerocross' 
%
% OUTPUT:
% - image Px1
%
% INFOS:
% - 'log' : Laplacian of Gaussian Method (taille (2N+1,2N+1), N = 3*sigma, sigma = 2)
%
% Plugin for OpenIsaac
% version 1
% © 2011-2018 Alain Clément - Université d'Angers

%---------------------------------------------------------------------------------------------------

% Copyright 2007 - 2018 Université d'Angers - Author: Alain Clément
%
% This program 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 3 of the
% License, or any later version. This program 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 for more details. You should have received
% a copy of the GNU General Public License along with this program; if not, write to the Free
% Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

%---------------------------------------------------------------------------------------------------

% PLUGIN PARAMETERS
if (nargin == 1) && strcmp(varargin{1},'-f')
    % input
	varargout{1} = {'IMG','image source', ...
					'DATA','opération'};
    % output
	varargout{2} = {'IMG','image binaire résultat'};
	return
end	

% INPUT
ObjIMG = varargin{1};
oper = IsaacDATA_get(varargin{2},'Val');

%---------------------------------------------------------------------------------------------------

switch oper
case{'sobel','prewitt','roberts','log','canny','zerocross'}
	img1 = IsaacIMG_img2mat(ObjIMG);
	nbp = IsaacIMG_get(ObjIMG,'DimZ');
	img2 = false(size(img1));
	for k = 1:nbp
		img2(:,:,k) = edge(img1(:,:,k),oper);	
	end
	% suppression de l'espace colorimétrique si il existe
	if IsaacIMG_get(ObjIMG,'IsColorSpace')
		ObjIMG = IsaacIMG_set(ObjIMG,'ColorSpace',[]);
	end	
	% forcer le changement de nbbits
	ObjIMG = IsaacIMG_mat2img(ObjIMG,img2,'ChangeBits');
otherwise
	error('opération invalide')
end

%---------------------------------------------------------------------------------------------------

% OUTPUT
varargout{1} = ObjIMG;	

