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Open Source Computer Vision Library
https://opencv.org/
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84 lines
2.1 KiB
84 lines
2.1 KiB
15 years ago
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#ifdef _CH_
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#pragma package <opencv>
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#endif
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#define CV_NO_BACKWARD_COMPATIBILITY
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#ifndef _EiC
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#include "cv.h"
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#include "highgui.h"
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#include <ctype.h>
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#include <stdio.h>
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#endif
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int sigma = 3;
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int smoothType = CV_GAUSSIAN;
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int main( int argc, char** argv )
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{
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IplImage* laplace = 0;
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IplImage* colorlaplace = 0;
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IplImage* planes[3] = { 0, 0, 0 };
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CvCapture* capture = 0;
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if( argc == 1 || (argc == 2 && strlen(argv[1]) == 1 && isdigit(argv[1][0])))
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capture = cvCaptureFromCAM( argc == 2 ? argv[1][0] - '0' : 0 );
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else if( argc == 2 )
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capture = cvCaptureFromAVI( argv[1] );
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if( !capture )
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{
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fprintf(stderr,"Could not initialize capturing...\n");
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return -1;
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}
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cvNamedWindow( "Laplacian", 0 );
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cvCreateTrackbar( "Sigma", "Laplacian", &sigma, 15, 0 );
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for(;;)
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{
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IplImage* frame = 0;
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int i, c, ksize;
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frame = cvQueryFrame( capture );
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if( !frame )
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break;
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if( !laplace )
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{
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for( i = 0; i < 3; i++ )
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planes[i] = cvCreateImage( cvGetSize(frame), 8, 1 );
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laplace = cvCreateImage( cvGetSize(frame), IPL_DEPTH_16S, 1 );
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colorlaplace = cvCreateImage( cvGetSize(frame), 8, 3 );
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}
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ksize = (sigma*5)|1;
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cvSmooth( frame, colorlaplace, smoothType, ksize, ksize, sigma, sigma );
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cvSplit( colorlaplace, planes[0], planes[1], planes[2], 0 );
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for( i = 0; i < 3; i++ )
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{
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cvLaplace( planes[i], laplace, 5 );
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cvConvertScaleAbs( laplace, planes[i], (sigma+1)*0.25, 0 );
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}
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cvMerge( planes[0], planes[1], planes[2], 0, colorlaplace );
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colorlaplace->origin = frame->origin;
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cvShowImage("Laplacian", colorlaplace );
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c = cvWaitKey(30);
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if( c == ' ' )
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smoothType = smoothType == CV_GAUSSIAN ? CV_BLUR : smoothType == CV_BLUR ? CV_MEDIAN : CV_GAUSSIAN;
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if( c == 'q' || c == 'Q' || (c & 255) == 27 )
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break;
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}
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cvReleaseCapture( &capture );
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cvDestroyWindow("Laplacian");
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return 0;
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}
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#ifdef _EiC
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main(1,"laplace.c");
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#endif
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