1 #define CV_NO_BACKWARD_COMPATIBILITY
16 void detectAndDraw( Mat& img,
17 CascadeClassifier& cascade, CascadeClassifier& nestedCascade,
21 "../../data/haarcascades/haarcascade_frontalface_alt.xml";
22 String nestedCascadeName =
23 "../../data/haarcascades/haarcascade_eye_tree_eyeglasses.xml";
25 int main( int argc, const char** argv )
27 CvCapture* capture = 0;
28 Mat frame, frameCopy, image;
29 const String scaleOpt = "--scale=";
30 size_t scaleOptLen = scaleOpt.length();
31 const String cascadeOpt = "--cascade=";
32 size_t cascadeOptLen = cascadeOpt.length();
33 const String nestedCascadeOpt = "--nested-cascade";
34 size_t nestedCascadeOptLen = nestedCascadeOpt.length();
37 CascadeClassifier cascade, nestedCascade;
40 for( int i = 1; i < argc; i++ )
42 if( cascadeOpt.compare( 0, cascadeOptLen, argv[i], cascadeOptLen ) == 0 )
43 cascadeName.assign( argv[i] + cascadeOptLen );
44 else if( nestedCascadeOpt.compare( 0, nestedCascadeOptLen, argv[i], nestedCascadeOptLen ) == 0 )
46 if( argv[i][nestedCascadeOpt.length()] == '=' )
47 nestedCascadeName.assign( argv[i] + nestedCascadeOpt.length() + 1 );
48 if( !nestedCascade.load( nestedCascadeName ) )
49 cerr << "WARNING: Could not load classifier cascade for nested objects" << endl;
51 else if( scaleOpt.compare( 0, scaleOptLen, argv[i], scaleOptLen ) == 0 )
53 if( !sscanf( argv[i] + scaleOpt.length(), "%lf", &scale ) || scale < 1 )
56 else if( argv[i][0] == '-' )
58 cerr << "WARNING: Unknown option %s" << argv[i] << endl;
61 inputName.assign( argv[i] );
64 if( !cascade.load( cascadeName ) )
66 cerr << "ERROR: Could not load classifier cascade" << endl;
67 cerr << "Usage: facedetect [--cascade=\"<cascade_path>\"]\n"
68 " [--nested-cascade[=\"nested_cascade_path\"]]\n"
69 " [--scale[=<image scale>\n"
70 " [filename|camera_index]\n" ;
74 if( inputName.empty() || (isdigit(inputName.c_str()[0]) && inputName.c_str()[1] == '\0') )
75 capture = cvCaptureFromCAM( inputName.empty() ? 0 : inputName.c_str()[0] - '0' );
76 else if( inputName.size() )
78 image = imread( inputName, 1 );
80 capture = cvCaptureFromAVI( inputName.c_str() );
83 image = imread( "lena.jpg", 1 );
85 cvNamedWindow( "result", 1 );
91 IplImage* iplImg = cvQueryFrame( capture );
95 if( iplImg->origin == IPL_ORIGIN_TL )
96 frame.copyTo( frameCopy );
98 flip( frame, frameCopy, 0 );
100 detectAndDraw( frameCopy, cascade, nestedCascade, scale );
102 if( waitKey( 10 ) >= 0 )
108 cvReleaseCapture( &capture );
114 detectAndDraw( image, cascade, nestedCascade, scale );
117 else if( !inputName.empty() )
119 /* assume it is a text file containing the
120 list of the image filenames to be processed - one per line */
121 FILE* f = fopen( inputName.c_str(), "rt" );
125 while( fgets( buf, 1000, f ) )
127 int len = (int)strlen(buf), c;
128 while( len > 0 && isspace(buf[len-1]) )
131 cout << "file " << buf << endl;
132 image = imread( buf, 1 );
135 detectAndDraw( image, cascade, nestedCascade, scale );
137 if( c == 27 || c == 'q' || c == 'Q' )
146 cvDestroyWindow("result");
151 void detectAndDraw( Mat& img,
152 CascadeClassifier& cascade, CascadeClassifier& nestedCascade,
158 const static Scalar colors[] = { CV_RGB(0,0,255),
166 Mat gray, smallImg( cvRound (img.rows/scale), cvRound(img.cols/scale), CV_8UC1 );
168 cvtColor( img, gray, CV_BGR2GRAY );
169 resize( gray, smallImg, smallImg.size(), 0, 0, INTER_LINEAR );
170 equalizeHist( smallImg, smallImg );
172 t = (double)cvGetTickCount();
173 cascade.detectMultiScale( smallImg, faces,
175 //|CV_HAAR_FIND_BIGGEST_OBJECT
176 //|CV_HAAR_DO_ROUGH_SEARCH
180 t = (double)cvGetTickCount() - t;
181 printf( "detection time = %g ms\n", t/((double)cvGetTickFrequency()*1000.) );
182 for( vector<Rect>::const_iterator r = faces.begin(); r != faces.end(); r++, i++ )
185 vector<Rect> nestedObjects;
187 Scalar color = colors[i%8];
189 center.x = cvRound((r->x + r->width*0.5)*scale);
190 center.y = cvRound((r->y + r->height*0.5)*scale);
191 radius = cvRound((r->width + r->height)*0.25*scale);
192 circle( img, center, radius, color, 3, 8, 0 );
193 if( nestedCascade.empty() )
195 smallImgROI = smallImg(*r);
196 nestedCascade.detectMultiScale( smallImgROI, nestedObjects,
198 //|CV_HAAR_FIND_BIGGEST_OBJECT
199 //|CV_HAAR_DO_ROUGH_SEARCH
200 //|CV_HAAR_DO_CANNY_PRUNING
204 for( vector<Rect>::const_iterator nr = nestedObjects.begin(); nr != nestedObjects.end(); nr++ )
206 center.x = cvRound((r->x + nr->x + nr->width*0.5)*scale);
207 center.y = cvRound((r->y + nr->y + nr->height*0.5)*scale);
208 radius = cvRound((nr->width + nr->height)*0.25*scale);
209 circle( img, center, radius, color, 3, 8, 0 );
212 cv::imshow( "result", img );