面部識別代碼(C語言)

1、文檔供參考，可復(fù)制、編制，期待您的好評與關(guān)注！ #include "cv.h"#include "highgui.h" #include <stdio.h>#include <stdlib.h>#include <string.h>#include <assert.h>#include <math.h>#include <float.h>#include <limits.h>#include <time.h>#include <ctype.h> #

2、ifdef _EiC#define WIN32#endif static CvMemStorage* storage = 0;static CvHaarClassifierCascade* cascade = 0; void detect_and_draw( IplImage* image ); const char* cascade_name = "haarcascade_frontalface_alt.xml"/* "haarcascade_profileface.xml"*/ int main( int argc, char* argv ) CvC

3、apture* capture = 0; IplImage *frame, *frame_copy = 0; int optlen = strlen("-cascade="); const char* input_name; if( argc > 1 && strncmp( argv1, "-cascade=", optlen ) = 0 ) cascade_name = argv1 + optlen; input_name = argc > 2 ? argv2 : 0; else cascade_name = ".

4、/./data/haarcascades/haarcascade_frontalface_alt2.xml" /opencv裝好后haarcascade_frontalface_alt2.xml的路徑, /也可以把這個文件拷到你的工程文件夾下然后不用寫路徑名cascade_name= "haarcascade_frontalface_alt2.xml" /或者cascade_name ="C:Program FilesOpenCVdatahaarcascadeshaarcascade_frontalface_alt2.xml" input_na

5、me = argc > 1 ? argv1 : 0; cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 ); if( !cascade ) fprintf( stderr, "ERROR: Could not load classifier cascaden" ); fprintf( stderr, "Usage: facedetect -cascade="<cascade_path>" filename|camera_indexn"

6、); return -1; storage = cvCreateMemStorage(0); if( !input_name | (isdigit(input_name0) && input_name1 = '0') ) capture = cvCaptureFromCAM( !input_name ? 0 : input_name0 - '0' ); else capture = cvCaptureFromAVI( input_name ); cvNamedWindow( "result", 1 ); if( capture

7、 ) for(;) if( !cvGrabFrame( capture ) break; frame = cvRetrieveFrame( capture ); if( !frame ) break; if( !frame_copy ) frame_copy = cvCreateImage( cvSize(frame->width,frame->height), IPL_DEPTH_8U, frame->nChannels ); if( frame->origin = IPL_ORIGIN_TL ) cvCopy( frame, frame_copy, 0 ); els

8、e cvFlip( frame, frame_copy, 0 ); detect_and_draw( frame_copy ); if( cvWaitKey( 10 ) >= 0 ) break; cvReleaseImage( &frame_copy ); cvReleaseCapture( &capture ); else const char* filename = input_name ? input_name : (char*)"lena.jpg" IplImage* image = cvLoadImage( filename, 1 ); i

9、f( image ) detect_and_draw( image ); cvWaitKey(0); cvReleaseImage( &image ); else /* assume it is a text file containing the list of the image filenames to be processed - one per line */ FILE* f = fopen( filename, "rt" ); if( f ) char buf1000+1; while( fgets( buf, 1000, f ) ) int len =

10、 (int)strlen(buf); while( len > 0 && isspace(buflen-1) ) len-; buflen = '0' image = cvLoadImage( buf, 1 ); if( image ) detect_and_draw( image ); cvWaitKey(0); cvReleaseImage( &image ); fclose(f); cvDestroyWindow("result"); return 0; void detect_and_draw( IplImage* im

11、g ) static CvScalar colors = 0,0,255, 0,128,255, 0,255,255, 0,255,0, 255,128,0, 255,255,0, 255,0,0, 255,0,255 ; double scale = 1.3; IplImage* gray = cvCreateImage( cvSize(img->width,img->height), 8, 1 ); IplImage* small_img = cvCreateImage( cvSize( cvRound (img->width/scale), cvRound (img-&

12、gt;height/scale), 8, 1 ); int i; cvCvtColor( img, gray, CV_BGR2GRAY ); cvResize( gray, small_img, CV_INTER_LINEAR ); cvEqualizeHist( small_img, small_img ); cvClearMemStorage( storage ); if( cascade ) double t = (double)cvGetTickCount(); CvSeq* faces = cvHaarDetectObjects( small_img, cascade, storag

13、e, 1.1, 2, 0/*CV_HAAR_DO_CANNY_PRUNING*/, cvSize(30, 30) ); t = (double)cvGetTickCount() - t; printf( "detection time = %gmsn", t/(double)cvGetTickFrequency()*1000.) ); for( i = 0; i < (faces ? faces->total : 0); i+ ) CvRect* r = (CvRect*)cvGetSeqElem( faces, i ); CvPoint center; int radius; center.x = cvRound(r->x + r->width*0.5)*scale); center.y = cvRound(r->y + r->height*0.5)*scale); radius