unit filterLogPolar;
(* ***** BEGIN LICENSE BLOCK *****
 * Copyright (C) 2004 Durand Emmanuel
 * Copyright (C) 2004 Burgel Eric
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Contact :
 *   filters@edurand.com
 *   filters@burgel.com
 *
 * ***** END LICENSE BLOCK ***** *)

{
 edurand (filters@edurand.com)
}

{
  use 'OpenCv' implementation
}

interface
uses
  filter, fparameters, image;

type
  TFilterLogPolar = class(TFilter)
  public
    constructor Create; override;
    procedure Run(); override;
  private
    parameterImageIn, parameterImageOut : TParameterImage;
    parameterMagnitude : TParameterInteger;
    parameterReinverseTransformation : TParameterBoolean;
  end;

implementation
uses
  Windows, imageIO, wrapper_opencv, SysUtils;

constructor TFilterLogPolar.Create;
begin
  inherited;
  parameterImageIn:=addParameterImage('inImage', 'input image');
  parameterImageOut:=addParameterImage('outImage', 'result image');
  parameterMagnitude:=addParameterInteger('magnitude','Magnitude scale parameter',1,1000,400);
  parameterReinverseTransformation:=addParameterBoolean('reinverseTransformation','Inverse transformation : src(phi,rho)->dst(x,y),',True);
end;

procedure TFilterLogPolar.Run();
var
  roi : TRect;
  x,y : Integer;
  magnitude : Single;
  reinverseTransformation : Integer;
begin
  if (parameterImageIn.Image<>nil) and (parameterImageOut.Image<>nil) then begin
    roi:=getRegionOfInterest(parameterImageIn.Image);
    x:=roi.Left+((roi.Right-roi.Left) div 2);
    y:=roi.Top+((roi.Bottom-roi.Top) div 2);
    magnitude:=parameterMagnitude.Value / 10.;
    reinverseTransformation:=1;
    if parameterReinverseTransformation.Value=False then reinverseTransformation:=0;
    wrapper_opencv.filterCvLogPolar(
      parameterImageIn.Image, parameterImageOut.Image,
      x,y,
      magnitude,
      reinverseTransformation
    );
  end;
end;

end.