sustaining_gazes/lib/local/Utilities/include/ImageCapture.h

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///////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2017, Tadas Baltrusaitis all rights reserved.
//
// ACADEMIC OR NON-PROFIT ORGANIZATION NONCOMMERCIAL RESEARCH USE ONLY
//
// BY USING OR DOWNLOADING THE SOFTWARE, YOU ARE AGREEING TO THE TERMS OF THIS LICENSE AGREEMENT.
// IF YOU DO NOT AGREE WITH THESE TERMS, YOU MAY NOT USE OR DOWNLOAD THE SOFTWARE.
//
// License can be found in OpenFace-license.txt
//
// * Any publications arising from the use of this software, including but
// not limited to academic journal and conference publications, technical
// reports and manuals, must cite at least one of the following works:
//
// OpenFace: an open source facial behavior analysis toolkit
// Tadas Baltru<72>aitis, Peter Robinson, and Louis-Philippe Morency
// in IEEE Winter Conference on Applications of Computer Vision, 2016
//
// Rendering of Eyes for Eye-Shape Registration and Gaze Estimation
// Erroll Wood, Tadas Baltru<72>aitis, Xucong Zhang, Yusuke Sugano, Peter Robinson, and Andreas Bulling
// in IEEE International. Conference on Computer Vision (ICCV), 2015
//
// Cross-dataset learning and person-speci?c normalisation for automatic Action Unit detection
// Tadas Baltru<72>aitis, Marwa Mahmoud, and Peter Robinson
// in Facial Expression Recognition and Analysis Challenge,
// IEEE International Conference on Automatic Face and Gesture Recognition, 2015
//
// Constrained Local Neural Fields for robust facial landmark detection in the wild.
// Tadas Baltru<72>aitis, Peter Robinson, and Louis-Philippe Morency.
// in IEEE Int. Conference on Computer Vision Workshops, 300 Faces in-the-Wild Challenge, 2013.
//
///////////////////////////////////////////////////////////////////////////////
#ifndef __IMAGE_CAPTURE_h_
#define __IMAGE_CAPTURE_h_
// System includes
#include <fstream>
#include <sstream>
#include <vector>
// OpenCV includes
#include <opencv2/core/core.hpp>
#include <opencv2/highgui/highgui.hpp>
namespace Utilities
{
//===========================================================================
/**
A class for capturing sequences from video, webcam, and image directories
*/
class ImageCapture {
public:
// Default constructor
ImageCapture() {};
// Opening based on command line arguments
bool Open(std::vector<std::string>& arguments);
// Direct opening
// Image sequence in the directory
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bool OpenDirectory(std::string directory, std::string bbox_directory="", float fx = -1, float fy = -1, float cx = -1, float cy = -1);
// Video file
bool OpenImageFiles(const std::vector<std::string>& image_files, float fx = -1, float fy = -1, float cx = -1, float cy = -1);
// Getting the next frame
cv::Mat GetNextImage();
// Getting the most recent grayscale frame (need to call GetNextImage first)
cv::Mat_<uchar> GetGrayFrame();
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// Return bounding boxes associated with the image (if defined)
std::vector<cv::Rect_<double> > GetBoundingBoxes();
// Parameters describing the sequence and it's progress (what's the proportion of images opened)
double GetProgress();
int image_width;
int image_height;
float fx, fy, cx, cy;
// Name of the video file, image directory, or the webcam
std::string name;
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bool has_bounding_boxes;
private:
// Blocking copy and move, as it doesn't make sense to have several readers pointed at the same source
ImageCapture & operator= (const ImageCapture& other);
ImageCapture & operator= (const ImageCapture&& other);
ImageCapture(const ImageCapture&& other);
ImageCapture(const ImageCapture& other);
// Storing the latest captures
cv::Mat latest_frame;
cv::Mat_<uchar> latest_gray_frame;
// Keeping track of how many files are read and the filenames
size_t frame_num;
std::vector<std::string> image_files;
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// Could optionally read the bounding box locations from files (each image could have multiple bounding boxes)
std::vector<std::vector<cv::Rect_<double> > > bounding_boxes;
void SetCameraIntrinsics(float fx, float fy, float cx, float cy);
bool image_focal_length_set;
bool image_optical_center_set;
bool no_input_specified;
};
}
#endif