hv_OpenCV.cpp
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上传日期:2008-11-10
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- /**
- * HandVu - a library for computer vision-based hand gesture
- * recognition.
- * Copyright (C) 2004 Mathias Kolsch, matz@cs.ucsb.edu
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- *
- * $Id: hv_OpenCV.cpp,v 1.15 2006/01/03 21:44:15 matz Exp $
- **/
- #ifdef WIN32
- #include <windows.h>
- #endif
- #include <stdio.h>
- #include <cv.h>
- #include <highgui.h>
- #include <ctype.h>
- #include <time.h>
- #include "HandVu.h"
- IplImage *capture_image = 0;
- IplImage *display_image = 0;
- bool async_processing = false;
- int num_async_bufs = 30;
- IplImage *m_async_image = 0;
- int m_async_bufID = -1;
- bool sync_display = true;
- CvPoint origin;
- int select_object = 0;
- int sel_area_left=0, sel_area_top=0, sel_area_right=0, sel_area_bottom=0;
- bool correct_distortion = false;
- void OnMouse( int event, int x, int y, int /*flags*/, void* /*params*/ )
- {
- if( !capture_image )
- return;
- if( capture_image->origin )
- y = capture_image->height - y;
- if( select_object )
- {
- sel_area_left = MIN(x,origin.x);
- sel_area_top = MIN(y,origin.y);
- sel_area_right = sel_area_left + CV_IABS(x - origin.x);
- sel_area_bottom = sel_area_top + CV_IABS(y - origin.y);
- sel_area_left = MAX( sel_area_left, 0 );
- sel_area_top = MAX( sel_area_top, 0 );
- sel_area_right = MIN( sel_area_right, capture_image->width );
- sel_area_bottom = MIN( sel_area_bottom, capture_image->height );
- if( sel_area_right-sel_area_left > 0 && sel_area_bottom-sel_area_top> 0 )
- hvSetDetectionArea(sel_area_left, sel_area_top,
- sel_area_right, sel_area_bottom);
- }
- switch( event )
- {
- case CV_EVENT_LBUTTONDOWN:
- origin = cvPoint(x,y);
- sel_area_left = sel_area_right = x;
- sel_area_top = sel_area_bottom = y;
- select_object = 1;
- break;
- case CV_EVENT_LBUTTONUP:
- select_object = 0;
- break;
- }
- }
- void showFrame(IplImage* img, hvAction action)
- {
- if (action==HV_DROP_FRAME) {
- // HandVu recommends dropping the frame entirely
- // printf("HandVuFilter: dropping framen");
- return;
- } else if (action==HV_SKIP_FRAME) {
- // HandVu recommends displaying the frame, but not doing any further
- // processing on it - keep going
- // printf("HandVuFilter: supposed to skip framen");
- } else if (action==HV_PROCESS_FRAME) {
- // full processing was done and is recommended for following steps;
- // keep going
- //printf("HandVuFilter: processed framen");
- } else {
- assert(0); // unknown action
- }
-
- hvState state;
- hvGetState(0, state);
-
- cvShowImage( "HandVu", img );
- }
- void displayCallback(IplImage* img, hvAction action)
- {
- if (sync_display) {
- cvCopy(img, display_image);
- } else {
- showFrame(img, action);
- }
- }
- int main( int argc, char** argv )
- {
- CvCapture* capture = 0;
- if (argc<2) {
- printf("you need to specify a conductor file as first argumentn");
- printf("for example: ../config/default.conductorn");
- return -1;
- }
- string conductor_fname(argv[1]);
- printf("will load conductor from file:n%sn", conductor_fname.c_str());
- if( argc == 2 || argc == 3) {
- int num = 0;
- if (argc==3) {
- num = atoi(argv[2]);
- }
- capture = cvCaptureFromCAM( num );
- if (!capture) {
- capture = cvCaptureFromAVI( argv[2] );
- }
- }
- if( !capture )
- {
- fprintf(stderr,"Could not initialize capturing through OpenCV.n");
- return -1;
- }
- printf( "Hot keys: n"
- "tESC - quit the programn"
- "tr - restart the trackingn"
- "t0-3 - set the overlay (verbosity) leveln"
- "use the mouse to select the initial detection arean" );
-
- int p = 0; // according to docs, these calls don't work in OpenCV beta 4 yet
- p = cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_WIDTH, 640);
- p = cvSetCaptureProperty(capture, CV_CAP_PROP_FRAME_HEIGHT, 480);
- capture_image = cvQueryFrame( capture );
- if ( !capture_image ) {
- fprintf(stderr,"Could not retrieve image through OpenCV.n");
- return -1;
- }
- /* allocate all the buffers */
- CvSize size = cvGetSize(capture_image);
- hvInitialize(size.width, size.height);
- hvLoadConductor(conductor_fname);
- hvStartRecognition();
- hvSetOverlayLevel(2);
- if (async_processing) {
- hvAsyncSetup(num_async_bufs, displayCallback);
- if (sync_display) display_image = cvCloneImage(capture_image);
- }
- cvSetMouseCallback( "HandVu", OnMouse );
- int success = cvNamedWindow( "HandVu", 1 );
- if (success!=1) {
- printf("can't open window - did you compile OpenCV with highgui support?");
- return -1;
- }
- fprintf(stderr, "initialized highguin");
- for (;;) {
- int c;
-
- if (async_processing) {
- // asynchronous processing in HandVu
- if (sync_display) cvShowImage("HandVu", display_image);
-
- // ------- main library call ---------
- hvAsyncGetImageBuffer(&m_async_image, &m_async_bufID);
- cvCopy(capture_image, m_async_image);
- hvAsyncProcessFrame(m_async_bufID);
- // -------
-
- } else {
- // synchronous processing in HandVu
-
- // ------- main library call ---------
- hvAction action = HV_INVALID_ACTION;
- action = hvProcessFrame(capture_image);
- // -------
-
- showFrame(capture_image, action);
-
- }
-
- c = cvWaitKey(10);
- if( c == 27 || c == 'q' )
- break;
- switch( c )
- {
- case 'r':
- hvStopRecognition();
- hvStartRecognition();
- break;
- case '0':
- hvSetOverlayLevel(0);
- break;
- case '1':
- hvSetOverlayLevel(1);
- break;
- case '2':
- hvSetOverlayLevel(2);
- break;
- case '3':
- hvSetOverlayLevel(3);
- break;
- case 'u':
- if (hvCanCorrectDistortion()) {
- correct_distortion = !correct_distortion;
- hvCorrectDistortion(correct_distortion);
- }
- break;
- default:
- ;
- }
-
- // capture next image
- capture_image = cvQueryFrame( capture );
- if ( !capture_image ) {
- fprintf(stderr,"Could not retrieve image through OpenCV.n");
- break;
- }
- }
-
- cvReleaseCapture( &capture );
- cvDestroyWindow("HandVu");
- return 0;
- }