mirror of
https://github.com/Laex/Delphi-OpenCV.git
synced 2024-11-16 16:25:53 +01:00
84 lines
3.0 KiB
ObjectPascal
84 lines
3.0 KiB
ObjectPascal
// *****************************************************************
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// Delphi-OpenCV Demo
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// Copyright (C) 2013 Project Delphi-OpenCV
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// ****************************************************************
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// Contributor:
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// Laentir Valetov
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// email:laex@bk.ru
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// ****************************************************************
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// You may retrieve the latest version of this file at the GitHub,
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// located at git://github.com/Laex/Delphi-OpenCV.git
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// ****************************************************************
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// The contents of this file are used with permission, subject to
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// the Mozilla Public License Version 1.1 (the "License"); you may
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// not use this file except in compliance with the License. You may
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// obtain a copy of the License at
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// http://www.mozilla.org/MPL/MPL-1_1Final.html
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//
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// Software distributed under the License is distributed on an
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// "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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// implied. See the License for the specific language governing
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// rights and limitations under the License.
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// *******************************************************************
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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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ocv.highgui_c,
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ocv.core_c,
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ocv.core.types_c,
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ocv.imgproc_c,
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ocv.imgproc.types_c,
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uResourcePaths;
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const
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filename = cResourceMedia + '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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// cîçäàåì èçîáðàæåíèå â ãðàäàöèÿõ cåðîãî
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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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