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/**
* Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __FACETRACKINGMODEL_H__
#define __FACETRACKINGMODEL_H__
#include "TrackerMedianFlow.h"
/**
* @file FaceTrackingModel.h
* @brief This file contains the FaceTrackingModel class definition which
* provides face tracking model interface.
*/
namespace MediaVision {
namespace Face {
/**
* @brief Structure where results of
* @ref MediaVision::Face::FaceTrackingModel::track() call are stored.
*
* @since_tizen 3.0
*/
struct FaceTrackingResults {
/**
* @brief Default constructor for the @ref FaceTrackingResults
*
* @since_tizen 3.0
*/
FaceTrackingResults();
bool mIsTracked; /**< The flag indication success of the
tracking */
cv::Rect_<float> mFaceLocation; /**< Location of the face at the current
track iteration where face position
is predicted */
float mConfidence; /**< Tracking confidence level
(0.0 .. 1.0) */
};
/**
* @class FaceTrackingModel
* @brief Class providing interface for management of face tracking model.
*
* @since_tizen 3.0
*/
class FaceTrackingModel {
public:
/**
* @brief Creates a FaceTrackingModel class instance.
*
* @since_tizen 3.0
*/
FaceTrackingModel();
/**
* @brief Creates a FaceTrackingModel class instance based on existed
* instance.
*
* @since_tizen 3.0
* @param [in] origin The FaceTrackingModel object that will be used
* for creation of new one
*/
FaceTrackingModel(const FaceTrackingModel& origin);
/**
* @brief @ref FaceTrackingModel copy assignment operator.
* @details Fills the information based on the @a copy
*
* @since_tizen 3.0
* @param [in] copy @ref FaceTrackingModel object which will be
* copied
*/
FaceTrackingModel& operator=(const FaceTrackingModel& copy);
/**
* @brief Destroys the FaceTrackingModel class instance including all
* its resources.
*
* @since_tizen 3.0
*/
~FaceTrackingModel();
/**
* @brief Serializes FaceTrackingModel object to the file.
*
* @since_tizen 3.0
* @param [in] fileName The name to the file to which serialized
* FaceTrackingModel object will be saved
* @return @c 0 on success, otherwise a negative error value
*
* @see FaceTrackingModel::load()
*/
int save(const std::string& fileName);
/**
* @brief Deserializes FaceTrackingModel object from the file.
*
* @since_tizen 3.0
* @param [in] fileName The name of the file from which serialized
* FaceTrackingModel object will be deserialized
* @return @c 0 on success, otherwise a negative error value
*
* @see FaceTrackingModel::save()
*/
int load(const std::string& fileName);
/**
* @brief Prepares FaceTrackingModel object to the next tracking session.
*
* @since_tizen 3.0
* @param [in] image First frame of the video or image sequence for
* which tracking will be started
* @return @c 0 on success, otherwise a negative error value
*
* @see FaceTrackingModel::save()
*/
int prepare(const cv::Mat& image);
/**
* @brief Prepares FaceTrackingModel object to the next tracking session.
*
* @since_tizen 3.0
* @param [in] image First frame of the video or image sequence for
* which tracking will be started
* @param [in] boundingBox Rectangular location of the face on the @a
* image
* @return @c 0 on success, otherwise a negative error value
*
* @see FaceTrackingModel::save()
*/
int prepare(const cv::Mat& image, const cv::Rect_<float>& boundingBox);
/**
* @brief Performs one tracking iteration for the video frame or image
* from the continuous sequence of images.
*
* @since_tizen 3.0
* @param [in] image
* @param [out] boundingBox
*/
int track(const cv::Mat& image, FaceTrackingResults& results);
private:
bool m_canTrack; /**< The flag showing possibility
of the tracking model to
perform track */
cv::Ptr<cv::TrackerMedianFlow> m_tracker; /**< Underlying OpenCV tracking
model */
};
} /* Face */
} /* MediaVision */
#endif /* __FACETRACKINGMODEL_H__ */
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