mirror of
https://github.com/Laex/Delphi-OpenCV.git
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fde0aa2f53
LibTest [+] cv_CalcOpticalFlowPyrLK [+] cv_SnakeImage MultiDemo [+] CameraShift [+] Squares Signed-off-by: Laex <laex@bk.ru>
60 lines
1.9 KiB
ObjectPascal
60 lines
1.9 KiB
ObjectPascal
// JCL_DEBUG_EXPERT_GENERATEJDBG OFF
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// JCL_DEBUG_EXPERT_INSERTJDBG OFF
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// JCL_DEBUG_EXPERT_DELETEMAPFILE OFF
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program cv_FindContours;
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{$APPTYPE CONSOLE}
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{$R *.res}
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uses
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System.SysUtils,
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{$I ..\..\uses_include.inc}
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;
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Const
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filename = 'Resource\opencv_logo_with_text_sm.png';
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Var
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image: pIplImage = nil;
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dst: pIplImage = nil;
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img_gray: pIplImage = Nil;
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contours: pCvSeq=nil;
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storage: pCvMemStorage = nil;
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begin
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try
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// ïîëó÷àåì êàðòèíêó
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image := cvLoadImage(filename, CV_LOAD_IMAGE_UNCHANGED);
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if Assigned(image) then
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begin
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cvNamedWindow('Source image', CV_WINDOW_AUTOSIZE);
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cvNamedWindow('Gray image', CV_WINDOW_AUTOSIZE);
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cvNamedWindow('Threshold image', CV_WINDOW_AUTOSIZE);
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cvNamedWindow('Contour image', CV_WINDOW_AUTOSIZE);
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cvShowImage('Source image', image);
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// Ñîçäàåì èçîáðàæåíèå â ãðàäàöèÿõ ñåðîãî
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img_gray := cvCreateImage(cvSize(image^.width, image^.height), IPL_DEPTH_8U, 1);
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dst := cvCreateImage(cvSize(image^.width, image^.height), IPL_DEPTH_8U, 1);
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cvCvtColor(image, img_gray, CV_BGR2GRAY);
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cvShowImage('Gray image', img_gray);
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storage := cvCreateMemStorage(0);
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cvThreshold(img_gray, dst, 128, 255, CV_THRESH_BINARY_INV);
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// cvAdaptiveThreshold(img_gray, img_gray, 255, CV_ADAPTIVE_THRESH_GAUSSIAN_C, CV_THRESH_BINARY, 21, 7);
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cvShowImage('Threshold image', dst);
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contours:=AllocMem(SizeOf(TCvSeq));
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cvFindContours(dst, storage, @contours, SizeOf(TCvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE, cvPoint(0, 0));
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cvDrawContours(image, contours, CV_RGB(100, 200, 0), CV_RGB(200, 100, 0), 2, 2, CV_AA, cvPoint(0, 0));
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cvShowImage('Contour image', image);
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cvWaitKey(0);
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cvDestroyAllWindows;
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cvReleaseImage(image);
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cvReleaseImage(img_gray);
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cvReleaseImage(dst);
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end;
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except
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on E: Exception do
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WriteLn(E.ClassName, ': ', E.Message);
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end;
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end.
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