opencv 能识别眼睛吗
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参考技术A 可以啊。给你个代码人眼睛识别:
#include "stdafx.h"
#include "cv.h"
#include "highgui.h"
#include <stdio.h>
#ifdef _EiC
#define WIN32
#endif
static CvMemStorage* storage = 0;
static CvHaarClassifierCascade* cascade = 0;
void detect_and_draw( IplImage* image );
const char* cascade_name =
"haarcascade_eye.xml";//人脸检测分类器
int main( int argc, char** argv )
CvCapture* capture = 0;
IplImage *frame, *frame_copy = 0;
int optlen = strlen("--cascade=");
const char* input_name;
if( argc > 1 && strncmp( argv[1], "--cascade=", optlen ) == 0 )
cascade_name = argv[1] + optlen;
input_name = argc > 2 ? argv[2] : 0;
else
cascade_name = "C:/OpenCV2.0/data/haarcascades/haarcascade_eye.xml";//分类器路径
input_name = argc > 1 ? argv[1] : 0;
cascade = (CvHaarClassifierCascade*)cvLoad( cascade_name, 0, 0, 0 );
if( !cascade )//如果没有找到分类器,输出以下
fprintf( stderr, "ERROR: Could not load classifier cascade\n" );
fprintf( stderr,
"Usage: facedetect --cascade=\"<cascade_path>\" [filename|camera_index]\n" );
return -1;
storage = cvCreateMemStorage(0);
capture = cvCaptureFromCAM( !input_name ? 0 : input_name[0] - '0' );//读取摄像头
if(!capture)//如果没有摄像头读取视频文件
capture = cvCaptureFromAVI("检测.avi");
cvNamedWindow( "result", 1);//创建窗口
if( capture )
for(;;)
if( !cvGrabFrame( capture ))//从摄像头中抓取帧
break;
frame = cvRetrieveFrame( capture );//读取上边抓取的帧
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 );
else
cvFlip( frame, frame_copy, 0 );
detect_and_draw( frame_copy );
if( cvWaitKey( 10 ) >= 0 )
break;
cvReleaseImage( &frame_copy );
cvReleaseCapture( &capture );
else//没检测到视频文件或者摄像头
const char* filename = (char*)"检测.jpg";//读图片
IplImage* image = cvLoadImage( filename, 1 );
if( image )
detect_and_draw( image );
cvWaitKey(0);
cvReleaseImage( &image );
else
FILE* f = fopen( filename, "rt" );
if( f )
char buf[1000+1];
while( fgets( buf, 1000, f ) )
int len = (int)strlen(buf);
while( len > 0 && isspace(buf[len-1]) )
len--;
buf[len] = '\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* img )
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->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, storage,
1.1, 2, 0/*CV_HAAR_DO_CANNY_PRUNING*/,
cvSize(30, 30) );//检测人脸返回矩形人脸
t = (double)cvGetTickCount() - t;
printf( "detection time = %gms\n", t/((double)cvGetTickFrequency()*1000.) );
for( i = 0; i < (faces ? faces->total : 0); i++ )//找到矩形中心,把矩形转化为圆形
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 = cvRound((r->width + r->height)*0.25*scale);
cvCircle( img, center, radius, colors[i%8], 3, 8, 0 );
cvShowImage( "result", img );
cvReleaseImage( &gray );
cvReleaseImage( &small_img );
本回答被提问者和网友采纳 参考技术B 这个库里面好像就有吧。。。
OpenCV-Python 人脸眼睛嘴识别
1 # 识别眼睛、嘴巴、人脸 2 image = cv2.imread(‘./yong.jpg‘) 3 4 gray = cv2.cvtColor(image,code=cv2.COLOR_BGR2BGRA) 5 # 加载算法 6 face_detector = cv2.CascadeClassifier(‘./haarcascade_frontalface_default.xml‘) 7 eye_detector = cv2.CascadeClassifier(‘./haarcascade_eye.xml‘) 8 mouth_detector = cv2.CascadeClassifier(‘./haarcascade_mcs_mouth.xml‘) 9 10 face_zone = face_detector.detectMultiScale(gray,1.3,3,minSize=(80,80)) 11 print(face_zone) 12 for x,y,w,h in face_zone: 13 cv2.rectangle(image, pt1=(x,y),pt2=(x+w,y+h), color=[0,0,255],thickness=2) 14 15 # 人脸切分 16 h_up = int(face_zone[0,-1]*0.6) 17 x,y,w,h = face_zone.reshape(-1) 18 # 头部 19 head = gray[y:y+h,x:x+w] 20 head_up = head[0:h_up] 21 head_down = head[h_up:] 22 # 检测眼睛 23 eye_zone = eye_detector.detectMultiScale(head_up,1.3,3,minSize=(10,10)) 24 for ex,ey,ew,eh in eye_zone: 25 cv2.rectangle(image, pt1=(ex + x,ey+y), pt2=(ex+ew+x,ey+eh+y),color=[0,255,0],thickness=1) 26 27 # 检查嘴 28 mouth_zone = mouth_detector.detectMultiScale(head_down,1.3,3,minSize=(10,10)) 29 for mx,my,mw,mh in mouth_zone: 30 cv2.rectangle(image, pt1=(mx + x,my+y+h_up), pt2=(mx+mw+x,my+mh+y+h_up),color=[255,0,0],thickness=1) 31 32 33 cv2.imshow(‘liyong‘, image) 34 cv2.waitKey(0) 35 cv2.destroyAllWindows()
代码第一行: 导入图片
第二行: 灰度化处理
第六--九行: 读取特征数据,并使用分类器对特征数据进行处理
第十--十三行: 进行人脸识别
第十五--二十一行: 进行人脸切分,在上部分识别眼睛;人脸下部分识别嘴的预处理
第二十三--二十五行: 识别眼睛
第二十八--三十行: 识别嘴
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