//*****************************************************************
  //                       Delphi-OpenCV Demo
  //               Copyright (C) 2013 Project Delphi-OpenCV
  // ****************************************************************
  // Contributor:
    // Laentir Valetov
  // email:laex@bk.ru
  // ****************************************************************
  // You may retrieve the latest version of this file at the GitHub,
  // located at git://github.com/Laex/Delphi-OpenCV.git
  // ****************************************************************
  // The contents of this file are used with permission, subject to
  // the Mozilla Public License Version 1.1 (the "License"); you may
  // not use this file except in compliance with the License. You may
  // obtain a copy of the License at
  // http://www.mozilla.org/MPL/MPL-1_1Final.html
  //
  // Software distributed under the License is distributed on an
  // "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
  // implied. See the License for the specific language governing
  // rights and limitations under the License.
  //*******************************************************************

program cv_Sub;

{$APPTYPE CONSOLE}
{$R *.res}

uses
  System.SysUtils,
  ocv.highgui_c,
  ocv.core_c,
  ocv.core.types_c,
  ocv.imgproc_c,
  ocv.imgproc.types_c,
  uResourcePaths;

const
  filename = cResourceMedia + 'cat2.jpg';

var
  src: pIplImage = nil;
  dst: pIplImage = nil;
  dst2: pIplImage = nil;

begin
  try
    // получаем картинку в градациях cерого
    src := cvLoadImage(filename, CV_LOAD_IMAGE_GRAYSCALE);
    WriteLn(Format('[i] image: %s', [filename]));

    // покажем изображение
    cvNamedWindow('original', 1);
    cvShowImage('original', src);

    // получим бинарное изображение
    dst2 := cvCreateImage(cvSize(src^.width, src^.height), IPL_DEPTH_8U, 1);
    cvCanny(src, dst2, 50, 200);

    cvNamedWindow('bin', 1);
    cvShowImage('bin', dst2);

    // cvScale(src, dst);
    cvSub(src, dst2, dst2);
    cvNamedWindow('sub', 1);
    cvShowImage('sub', dst2);

    // ждём нажатия клавиши
    cvWaitKey(0);

    // оcвобождаем реcурcы
    cvReleaseImage(src);
    cvReleaseImage(dst);
    cvReleaseImage(dst2);
    // удаляем окна
    cvDestroyAllWindows();
  except
    on E: Exception do
      WriteLn(E.ClassName, ': ', E.Message);
  end;

end.