mirror of
https://github.com/Laex/Delphi-OpenCV.git
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ba000c1405
LibTest [+] cv_CalcOpticalFlowPyrLK [+] cv_SnakeImage MultiDemo [+] CameraShift [+] Squares Signed-off-by: Laex <laex@bk.ru>
85 lines
2.4 KiB
ObjectPascal
85 lines
2.4 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 CameraCaptureAndFindContours;
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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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Var
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capture: PCvCapture;
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width: Double;
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height: Double;
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frame: PIplImage;
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gframe: PIplImage = nil;
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counter: Integer;
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filename: pCVChar;
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cc: Integer;
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storage: pCvMemStorage = nil;
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contours: pCvSeq = nil;
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h_next, c: pCvSeq;
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begin
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try
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// ïîëó÷àåì ëþáóþ ïîäêëþ÷¸ííóþ êàìåðó
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capture := cvCreateCameraCapture(CV_CAP_ANY); // cvCaptureFromCAM( 0 );
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if not Assigned(capture) then
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Halt;
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// óçíàåì øèðèíó è âûñîòó êàäðà
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width := cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH);
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height := cvGetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT);
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WriteLn(Format('[i] %.0f x %.0f', [width, height]));
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frame := Nil;
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cvNamedWindow('Capture', CV_WINDOW_AUTOSIZE);
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WriteLn('[i] press Enter for capture image and Esc for quit!');
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counter := 0;
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filename := AllocMem(512);
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while true do
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begin
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// ïîëó÷àåì êàäð
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frame := cvQueryFrame(capture);
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// ïîêàçûâàåì
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if not Assigned(gframe) then
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begin
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gframe := cvCreateImage(cvSize(frame^.width, frame^.height), IPL_DEPTH_8U, 1);
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storage := cvCreateMemStorage(0);
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contours := AllocMem(SizeOf(TCvSeq));
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end;
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cvCvtColor(frame, gframe, CV_BGR2GRAY);
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cvThreshold(gframe, gframe, 128, 255, CV_THRESH_BINARY_INV);
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cvFindContours(gframe, storage, @contours, SizeOf(TCvContour), CV_RETR_LIST, CV_CHAIN_APPROX_SIMPLE,
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cvPoint(0, 0));
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contours := cvApproxPoly(contours, SizeOf(TCvContour), storage, CV_POLY_APPROX_DP, 5, 1);
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cvDrawContours(frame, contours, CV_RGB(255, 0, 0), CV_RGB(0, 255, 0), 2, 2, CV_AA, cvPoint(0, 0));
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cvShowImage('capture', frame);
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cc := cvWaitKey(33);
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if (cc = 27) then
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Break
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else if (cc = 13) then
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begin
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// ñîõðàíÿåì êàäð â ôàéë
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filename := pCVChar(AnsiString(Format('Image %d.jpg'#0, [counter])));
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WriteLn('[i] capture - ', filename);
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cvSaveImage(filename, frame);
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Inc(counter);
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end;
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end;
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// îñâîáîæäàåì ðåñóðñû
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cvDestroyWindow('capture');
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cvReleaseCapture(capture);
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cvReleaseImage(gframe);
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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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