C++ (Cpp) ipl_image_from_data Examples

Example #1

C_RESULT output_gtk_stage_transform(vp_stages_gtk_config_t *cfg, vp_api_io_data_t *in, vp_api_io_data_t *out)
{

    // Pull a frame from the camera
    // IplImage* cvImage = cvCreateImage(cvSize(640,360), IPL_DEPTH_8U, 3);
    IplImage *cvImage = ipl_image_from_data( (uint8_t*)in->buffers[0] );

    if(!cvImage)
    {
        printf("Could not pull image from camera");
    }

    // If an image was successfully gathered,
    // then draw it on the screen
    cvShowImage( "BetaCamera", cvImage );

    gtk_widget_show_all(ihm_ImageWin);
    gdk_threads_leave();


    return (SUCCESS);
}

Example #2

File: display_stage.c Project: Magp13s43ver/OpenCVAR.Drone

C_RESULT display_stage_transform (display_stage_cfg_t *cfg, vp_api_io_data_t *in, vp_api_io_data_t *out)
{
	if(count > 1)
	{
		temp_x = cur_x;
		temp_y = cur_y;
	}

	int i = 0;
  	const char *cascade_name = "/usr/share/opencv/haarcascades/haarcascade_frontalface_alt.xml";
  	CvHaarClassifierCascade *cascade = 0;
  	CvMemStorage *storage = 0;
  	CvSeq *faces;

	cascade = (CvHaarClassifierCascade *) cvLoad (cascade_name, 0, 0, 0);

	if(!cascade)
	{
		printf("Could not load cascade.\n");
		return -1;
	}
  	
	uint32_t width = 0, height = 0;
    	getPicSizeFromBufferSize (in->size, &width, &height);

	//Obtain image from ARDrone and convert it to OpenCV format.
    	IplImage *img = ipl_image_from_data((uint8_t*)in->buffers[0], 1, 640, 360);

	storage = cvCreateMemStorage (0);
    	cvClearMemStorage (storage);

	//DetectFaces
	faces = cvHaarDetectObjects (img, cascade, storage, 1.11, 4, 0, cvSize(30, 30), cvSize (0, 0));
    	

	for (i = 0; i < (faces ? faces->total : 0); i++) 
	{
		CvRect *r = (CvRect *) cvGetSeqElem (faces, i);
      		doMosaic(img, r->x, r->y, r->width, r->height, 10);
		cur_x = r->x;
		cur_y = r->y;
		//printf("In the loop.\n");
		count++; //increases count when detect faces
 	}
	
	if(count > 2)
	{
		printf("prev_x = %d, prev_y = %d, cur_x = %d, cur_y = %d\n", temp_x, temp_y, cur_x, cur_y);
		if(cur_x - temp_x > 3)
		{
			//printf("Move Right.\n");
			ardrone_at_set_progress_cmd( 1, 1.0, 0.0, 0.0, 0.0 );
		}

		if(cur_x - temp_x < -3)
		{
			//printf("Move Left.\n");
			ardrone_at_set_progress_cmd( 1, -1.0, 0.0, 0.0, 0.0 );
		}

		if(cur_y - temp_y > 3)
		{
			//printf("Move Down.\n");
		        ardrone_at_set_progress_cmd( 1, 0.0, 0.0, -1.0, 0.0 );
		}

		if(cur_y - temp_y < -5)
		{
			//printf("Move Up.\n");
			//ardrone_at_reset_com_watchdog();
		        ardrone_tool_set_progressive_cmd( 1, 0.0, 0.0, 0.3, 0.0 );
			//vp_os_delay(1000);
		}
	}

	//emergency++;p

	if(count > 50)
	{
		printf("Exit\n");
		ardrone_tool_set_ui_pad_start(0);
		return -1;
	}

	cvNamedWindow("FaceDetect", CV_WINDOW_AUTOSIZE);
	cvShowImage("FaceDetect", img);
	cvWaitKey(1);
	cvReleaseImage(&img);

    return C_OK;
}