- #include <stdio.h>
- #include "cv.h"
- #include "highgui.h"
-
- int main( int argc, char** argv )
- {
- IplImage *img;
- IplImage *tpl;
- IplImage *res;
- CvPoint minloc, maxloc;
- double minval, maxval;
- int img_width, img_height;
- int tpl_width, tpl_height;
- int res_width, res_height;
-
- /* check for arguments */
- if( argc < 3 ) {
- fprintf( stderr, "Usage: template_match <reference> <template>/n" );
- return 1;
- }
-
- /* load reference image */
- img = cvLoadImage( argv[1], CV_LOAD_IMAGE_COLOR );
-
- /* always check */
- if( img == 0 ) {
- fprintf( stderr, "Cannot load file %s!/n", argv[1] );
- return 1;
- }
-
- /* load template image */
- tpl = cvLoadImage( argv[2], CV_LOAD_IMAGE_COLOR );
-
- /* always check */
- if( tpl == 0 ) {
- fprintf( stderr, "Cannot load file %s!/n", argv[2] );
- return 1;
- }
-
- /* get image's properties */
- img_width = img->width;
- img_height = img->height;
- tpl_width = tpl->width;
- tpl_height = tpl->height;
- res_width = img_width - tpl_width + 1;
- res_height = img_height - tpl_height + 1;
-
- /* create new image for template matching computation */
- res = cvCreateImage( cvSize( res_width, res_height ), IPL_DEPTH_32F, 1 );
-
- /* choose template matching method to be used */
- cvMatchTemplate( img, tpl, res, CV_TM_SQDIFF );
- cvMinMaxLoc( res, &minval, &maxval, &minloc, &maxloc, 0 );
-
- /* draw red rectangle */
- cvRectangle( img,
- cvPoint( minloc.x, minloc.y ),
- cvPoint( minloc.x + tpl_width, minloc.y + tpl_height ),
- cvScalar( 0, 0, 255, 0 ), 1, 0, 0 );
-
- /* display images */
- cvNamedWindow( "reference", CV_WINDOW_AUTOSIZE );
- cvNamedWindow( "template", CV_WINDOW_AUTOSIZE );
- cvShowImage( "reference", img );
- cvShowImage( "template", tpl );
-
- /* wait until user press a key to exit */
- cvWaitKey( 0 );
-
- /* free memory */
- cvDestroyWindow( "reference" );
- cvDestroyWindow( "template" );
- cvReleaseImage( &img );
- cvReleaseImage( &tpl );
- cvReleaseImage( &res );
-
- return 0;
- }
作者：gnuhpc
出处：http://www.cnblogs.com/gnuhpc/
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