Delphi-OpenCV/samples/LibTest/cvHoughLines/cv_HoughLines2.dpr

// JCL_DEBUG_EXPERT_GENERATEJDBG OFF
// JCL_DEBUG_EXPERT_INSERTJDBG OFF
// JCL_DEBUG_EXPERT_DELETEMAPFILE OFF
program cv_HoughLines2;

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

uses
  System.SysUtils,
{$I ..\..\uses_include.inc}
  ;

const
  filename = 'Resource\opencv_logo_with_text_sm.png';

Var
  src: pIplImage = Nil;
  dst: pIplImage = Nil;
  color_dst: pIplImage = Nil;
  storage: pCvMemStorage;
  i: Integer;
  lines: pCvSeq;
  line: pCvPointArray;

begin
  try
    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> (<28> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>)
    src := cvLoadImage(filename, CV_LOAD_IMAGE_GRAYSCALE);
    WriteLn(Format('[i] image: %s', [filename]));

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
    storage := cvCreateMemStorage(0);
    lines := nil;
    i := 0;

    dst := cvCreateImage(cvGetSize(src), 8, 1);
    color_dst := cvCreateImage(cvGetSize(src), 8, 3);

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    cvCanny(src, dst, 50, 200, 3);

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    cvCvtColor(dst, color_dst, CV_GRAY2BGR);

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
    lines := cvHoughLines2(dst, storage, CV_HOUGH_PROBABILISTIC, 1, CV_PI / 180, 50, 50, 10);

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD>
    for i := 0 to lines^.total - 1 do
    begin
      line := pCvPointArray(cvGetSeqElem(lines, i));
      cvLine(color_dst, line^[0], line^[1], CV_RGB(255, 0, 0), 3, CV_AA, 0);
    end;

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    cvNamedWindow('Source', 1);
    cvShowImage('Source', src);

    cvNamedWindow('Hough', 1);
    cvShowImage('Hough', color_dst);

    // <20><><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    cvWaitKey(0);

    // <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    cvReleaseMemStorage(storage);
    cvReleaseImage(src);
    cvReleaseImage(dst);
    cvReleaseImage(color_dst);
    cvDestroyAllWindows();
  except
    on E: Exception do
      WriteLn(E.ClassName, ': ', E.Message);
  end;

end.