112 …cvBackgroundTest( const int nChannels, int n, int i, int j, int *match, CvGaussBGModel* bg_model );
114 static void CV_CDECL icvReleaseGaussianBGModel( CvGaussBGModel** bg_model );
115 static int CV_CDECL icvUpdateGaussianBGModel( IplImage* curr_frame, CvGaussBGModel*  bg_model );
138     CvGaussBGModel* bg_model = 0;  in cvCreateGaussianBGModel()  local
169     CV_CALL( bg_model = (CvGaussBGModel*)cvAlloc( sizeof(*bg_model) ));  in cvCreateGaussianBGModel()
170     memset( bg_model, 0, sizeof(*bg_model) );  in cvCreateGaussianBGModel()
171     bg_model->type = CV_BG_MODEL_MOG;  in cvCreateGaussianBGModel()
172     bg_model->release = (CvReleaseBGStatModel)icvReleaseGaussianBGModel;  in cvCreateGaussianBGModel()
173     bg_model->update = (CvUpdateBGStatModel)icvUpdateGaussianBGModel;  in cvCreateGaussianBGModel()
175     bg_model->params = params;  in cvCreateGaussianBGModel()
178     CV_CALL( bg_model->g_point = (CvGaussBGPoint*)cvAlloc(sizeof(CvGaussBGPoint)*  in cvCreateGaussianBGModel()
181     CV_CALL( bg_model->background = cvCreateImage(cvSize(first_frame->width,  in cvCreateGaussianBGModel()
183     CV_CALL( bg_model->foreground = cvCreateImage(cvSize(first_frame->width,  in cvCreateGaussianBGModel()
186     CV_CALL( bg_model->storage = cvCreateMemStorage());  in cvCreateGaussianBGModel()
190     CV_CALL( bg_model->g_point[0].g_values =  in cvCreateGaussianBGModel()
200             bg_model->g_point[n].g_values =  in cvCreateGaussianBGModel()
201                 bg_model->g_point[0].g_values + n*params.n_gauss;  in cvCreateGaussianBGModel()
202             bg_model->g_point[n].g_values[0].weight = 1;    //the first value seen has weight one  in cvCreateGaussianBGModel()
203             bg_model->g_point[n].g_values[0].match_sum = 1;  in cvCreateGaussianBGModel()
206                 bg_model->g_point[n].g_values[0].variance[m] = var_init;  in cvCreateGaussianBGModel()
207 …           bg_model->g_point[n].g_values[0].mean[m] = (unsigned char)first_frame->imageData[p + m];  in cvCreateGaussianBGModel()
211                 bg_model->g_point[n].g_values[k].weight = 0;  in cvCreateGaussianBGModel()
212                 bg_model->g_point[n].g_values[k].match_sum = 0;  in cvCreateGaussianBGModel()
214                     bg_model->g_point[n].g_values[k].variance[m] = var_init;  in cvCreateGaussianBGModel()
215                     bg_model->g_point[n].g_values[k].mean[m] = 0;  in cvCreateGaussianBGModel()
221     bg_model->countFrames = 0;  in cvCreateGaussianBGModel()
227         CvBGStatModel* base_ptr = (CvBGStatModel*)bg_model;  in cvCreateGaussianBGModel()
229         if( bg_model && bg_model->release )  in cvCreateGaussianBGModel()
230             bg_model->release( &base_ptr );  in cvCreateGaussianBGModel()
232             cvFree( &bg_model );  in cvCreateGaussianBGModel()
233         bg_model = 0;  in cvCreateGaussianBGModel()
236     return (CvBGStatModel*)bg_model;  in cvCreateGaussianBGModel()
252         CvGaussBGModel* bg_model = *_bg_model;  in icvReleaseGaussianBGModel()  local
253         if( bg_model->g_point )  in icvReleaseGaussianBGModel()
255             cvFree( &bg_model->g_point[0].g_values );  in icvReleaseGaussianBGModel()
256             cvFree( &bg_model->g_point );  in icvReleaseGaussianBGModel()
259         cvReleaseImage( &bg_model->background );  in icvReleaseGaussianBGModel()
260         cvReleaseImage( &bg_model->foreground );  in icvReleaseGaussianBGModel()
261         cvReleaseMemStorage(&bg_model->storage);  in icvReleaseGaussianBGModel()
262         memset( bg_model, 0, sizeof(*bg_model) );  in icvReleaseGaussianBGModel()
271 icvUpdateGaussianBGModel( IplImage* curr_frame, CvGaussBGModel*  bg_model )  in icvUpdateGaussianBGModel()  argument
277     bg_model->countFrames++;  in icvUpdateGaussianBGModel()
289             CvGaussBGPoint* g_point = &bg_model->g_point[n];  in icvUpdateGaussianBGModel()
290             const CvGaussBGStatModelParams bg_model_params = bg_model->params;  in icvUpdateGaussianBGModel()
298             if( bg_model->countFrames >= bg_model->params.win_size )  in icvUpdateGaussianBGModel()
300                 icvUpdateFullWindow( pixel, nChannels, match, g_point, &bg_model->params );  in icvUpdateGaussianBGModel()
312             icvBackgroundTest( nChannels, n, i, j, match, bg_model );  in icvUpdateGaussianBGModel()
319     cvClearMemStorage(bg_model->storage);  in icvUpdateGaussianBGModel()
324 …cvFindContours( bg_model->foreground, bg_model->storage, &first_seq, sizeof(CvContour), CV_RETR_LI…  in icvUpdateGaussianBGModel()
328         if( cnt->rect.width * cnt->rect.height < bg_model->params.minArea )  in icvUpdateGaussianBGModel()
348     bg_model->foreground_regions = first_seq;  in icvUpdateGaussianBGModel()
349     cvZero(bg_model->foreground);  in icvUpdateGaussianBGModel()
350     cvDrawContours(bg_model->foreground, first_seq, CV_RGB(0, 0, 255), CV_RGB(0, 0, 255), 10, -1);  in icvUpdateGaussianBGModel()
575 …icvBackgroundTest( const int nChannels, int n, int i, int j, int *match, CvGaussBGModel* bg_model )  in icvBackgroundTest()  argument
580     CvGaussBGPoint* g_point = bg_model->g_point;  in icvBackgroundTest()
583 …bg_model->background->imageData[ bg_model->background->widthStep*i + j*nChannels + m]  = (unsigned…  in icvBackgroundTest()
585     for( b = 0; b < bg_model->params.n_gauss; b++)  in icvBackgroundTest()
590         if( weight_sum > bg_model->params.bg_threshold )  in icvBackgroundTest()
594     bg_model->foreground->imageData[ bg_model->foreground->widthStep*i + j] = pixelValue;  in icvBackgroundTest()