[28] | 1 | // TrackFaces.c - by Robin Hewitt, 2007 |
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| 2 | // http://www.cognotics.com/opencv/downloads/camshift_wrapper |
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| 3 | // This is free software. See License.txt, in the download |
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| 4 | // package, for details. |
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| 5 | // |
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| 6 | |
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| 7 | /////////////////////////////////////////////////////////////////////////////// |
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| 8 | // An example program that It detects a face in live video, and automatically |
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| 9 | // begins tracking it, using the Simple Camshift Wrapper. |
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| 10 | |
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| 11 | #include "cv.h" |
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| 12 | #include "highgui.h" |
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| 13 | #include <stdio.h> |
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| 14 | #include "capture.h" |
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| 15 | #include "facedet.h" |
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| 16 | #include "camshift_wrapper.h" |
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| 17 | #include "eigenface.h" |
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| 18 | |
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| 19 | //// Constants |
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| 20 | const char * DISPLAY_WINDOW = "DisplayWindow"; |
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| 21 | const char * DISPLAY_WINDOW2 = "FaceWindow"; |
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| 22 | #define OPENCV_ROOT "/home/marius/OpenCV-2.0.0" |
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| 23 | |
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| 24 | |
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| 25 | //// Global variables |
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| 26 | IplImage * pVideoFrameCopy = 0; |
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| 27 | |
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| 28 | |
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| 29 | //// Function definitions |
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| 30 | int initAll(); |
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| 31 | void exitProgram(int code); |
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| 32 | void captureVideoFrame(); |
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| 33 | IplImage* convert_grayscale(IplImage *img); |
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| 34 | |
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| 35 | ////////////////////////////////// |
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| 36 | // main() |
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| 37 | // |
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| 38 | void main( int argc, char** argv ) |
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| 39 | { |
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| 40 | CvRect * pFaceRect = 0; |
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| 41 | |
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| 42 | // validate that an input was specified |
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| 43 | if( argc != 2 ) |
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| 44 | { |
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| 45 | printUsage(); |
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| 46 | return; |
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| 47 | } |
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| 48 | |
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| 49 | if( !strcmp(argv[1], "train") ) learn(); |
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| 50 | else if( !strcmp(argv[1], "test") ) |
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| 51 | { |
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| 52 | if( !initAll() ) exitProgram(-1); |
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| 53 | |
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| 54 | // Capture and display video frames until a face |
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| 55 | // is detected |
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| 56 | while( 1 ) |
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| 57 | { |
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| 58 | // Look for a face in the next video frame |
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| 59 | captureVideoFrame(); |
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| 60 | pFaceRect = detectFace(pVideoFrameCopy); |
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| 61 | |
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| 62 | // Show the display image |
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| 63 | cvShowImage( DISPLAY_WINDOW, pVideoFrameCopy ); |
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| 64 | if( (char)27==cvWaitKey(20) ) exitProgram(0); |
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| 65 | |
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| 66 | // exit loop when a face is detected |
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| 67 | if(pFaceRect) break; |
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| 68 | } |
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| 69 | |
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| 70 | // initialize tracking |
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| 71 | startTracking(pVideoFrameCopy, pFaceRect); |
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| 72 | CvMat * trainPersonNumMat = 0; |
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| 73 | if( !loadTrainingData( &trainPersonNumMat ) ) return; |
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| 74 | |
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| 75 | // Track the detected face using CamShift |
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| 76 | while( 1 ) |
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| 77 | { |
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| 78 | CvBox2D faceBox; |
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| 79 | CvRect r; |
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| 80 | // get the next video frame |
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| 81 | captureVideoFrame(); |
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| 82 | |
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| 83 | // track the face in the new video frame |
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| 84 | r = track(pVideoFrameCopy); |
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| 85 | |
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| 86 | cvSetImageROI(pVideoFrameCopy, r); |
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| 87 | IplImage * pFaceImg = |
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| 88 | cvCreateImage( cvSize(92,112), pVideoFrameCopy->depth, pVideoFrameCopy->nChannels ); |
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| 89 | cvResize(pVideoFrameCopy, pFaceImg, CV_INTER_AREA ); |
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| 90 | cvResetImageROI(pVideoFrameCopy); |
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| 91 | pFaceImg = convert_grayscale(pFaceImg); |
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| 92 | |
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| 93 | CvPoint pt1 = { r.x, r.y }; |
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| 94 | CvPoint pt2 = { r.x + r.width, r.y + r.height }; |
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| 95 | cvRectangle(pVideoFrameCopy, pt1, pt2, CV_RGB(0,255,0), 3, 4, 0); |
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| 96 | |
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| 97 | recognize(pFaceImg, trainPersonNumMat); |
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| 98 | // faceBox = track(pVideoFrameCopy); |
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| 99 | // |
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| 100 | // // outline face ellipse |
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| 101 | // cvEllipseBox(pVideoFrameCopy, faceBox, |
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| 102 | // CV_RGB(255,0,0), 3, CV_AA, 0 ); |
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| 103 | cvShowImage( DISPLAY_WINDOW, pVideoFrameCopy ); |
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| 104 | cvShowImage( DISPLAY_WINDOW2, pFaceImg ); |
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| 105 | if( (char)27==cvWaitKey(20) ) break; |
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| 106 | } |
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| 107 | } |
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| 108 | else |
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| 109 | { |
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| 110 | printf("Unknown command: %s\n", argv[1]); |
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| 111 | printUsage(); |
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| 112 | } |
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| 113 | |
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| 114 | exitProgram(0); |
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| 115 | } |
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| 116 | |
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| 117 | IplImage* convert_grayscale(IplImage *img) |
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| 118 | { |
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| 119 | IplImage *gray_image,*gray_img0; |
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| 120 | gray_image=cvCloneImage(img); |
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| 121 | |
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| 122 | //check image is it gray or not if nor convert it to the gray |
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| 123 | if(img->nChannels!=1){ |
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| 124 | //convert original image to gray_scale image |
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| 125 | gray_img0 = cvCreateImage(cvSize( gray_image->width, |
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| 126 | gray_image->height), 8, 1 ); |
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| 127 | cvCvtColor(gray_image, gray_img0, CV_RGB2GRAY ); |
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| 128 | gray_image = cvCloneImage( gray_img0 ); |
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| 129 | } |
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| 130 | |
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| 131 | return gray_image; |
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| 132 | } |
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| 133 | |
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| 134 | ////////////////////////////////// |
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| 135 | // initAll() |
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| 136 | // |
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| 137 | int initAll() |
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| 138 | { |
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| 139 | if( !initCapture() ) return 0; |
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| 140 | if( !initFaceDet(OPENCV_ROOT |
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| 141 | "/data/haarcascades/haarcascade_frontalface_default.xml")) |
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| 142 | return 0; |
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| 143 | |
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| 144 | // Startup message tells user how to begin and how to exit |
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| 145 | printf( "\n********************************************\n" |
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| 146 | "To exit, click inside the video display,\n" |
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| 147 | "then press the ESC key\n\n" |
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| 148 | "Press <ENTER> to begin" |
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| 149 | "\n********************************************\n" ); |
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| 150 | fgetc(stdin); |
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| 151 | |
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| 152 | // Create the display window |
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| 153 | cvNamedWindow( DISPLAY_WINDOW, 1 ); |
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| 154 | cvNamedWindow( DISPLAY_WINDOW2, 1 ); |
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| 155 | //cvSetMouseCallback( DISPLAY_WINDOW, on_mouse, 0 ); |
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| 156 | // Initialize tracker |
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| 157 | captureVideoFrame(); |
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| 158 | if( !createTracker(pVideoFrameCopy) ) return 0; |
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| 159 | |
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| 160 | // Set Camshift parameters |
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| 161 | setVmin(70); |
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| 162 | setSmin(30); |
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| 163 | |
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| 164 | return 1; |
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| 165 | } |
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| 166 | |
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| 167 | |
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| 168 | ////////////////////////////////// |
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| 169 | // exitProgram() |
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| 170 | // |
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| 171 | void exitProgram(int code) |
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| 172 | { |
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| 173 | // Release resources allocated in this file |
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| 174 | cvDestroyWindow( DISPLAY_WINDOW ); |
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| 175 | cvReleaseImage( &pVideoFrameCopy ); |
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| 176 | |
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| 177 | // Release resources allocated in other project files |
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| 178 | closeCapture(); |
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| 179 | closeFaceDet(); |
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| 180 | releaseTracker(); |
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| 181 | |
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| 182 | exit(code); |
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| 183 | } |
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| 184 | |
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| 185 | |
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| 186 | ////////////////////////////////// |
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| 187 | // captureVideoFrame() |
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| 188 | // |
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| 189 | void captureVideoFrame() |
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| 190 | { |
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| 191 | // Capture the next frame |
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| 192 | IplImage * pVideoFrame = nextVideoFrame(); |
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| 193 | if( !pVideoFrame ) exitProgram(-1); |
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| 194 | |
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| 195 | // Copy it to the display image, inverting it if needed |
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| 196 | if( !pVideoFrameCopy ) |
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| 197 | pVideoFrameCopy = cvCreateImage( cvGetSize(pVideoFrame), 8, 3 ); |
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| 198 | cvCopy( pVideoFrame, pVideoFrameCopy, 0 ); |
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| 199 | pVideoFrameCopy->origin = pVideoFrame->origin; |
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| 200 | |
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| 201 | if( 1 == pVideoFrameCopy->origin ) // 1 means the image is inverted |
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| 202 | { |
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| 203 | cvFlip( pVideoFrameCopy, 0, 0 ); |
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| 204 | pVideoFrameCopy->origin = 0; |
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| 205 | } |
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| 206 | } |
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| 207 | |
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