468 lines
14 KiB
C++
468 lines
14 KiB
C++
///////////////////////////////////////////////////////////////////////////////
|
|
// Copyright (C) 2017, Carnegie Mellon University and University of Cambridge,
|
|
// 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 Baltrušaitis, 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 Baltrušaitis, 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 Baltrušaitis, 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 Baltrušaitis, Peter Robinson, and Louis-Philippe Morency.
|
|
// in IEEE Int. Conference on Computer Vision Workshops, 300 Faces in-the-Wild Challenge, 2013.
|
|
//
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Camera_Interop.h
|
|
|
|
#pragma once
|
|
|
|
#pragma unmanaged
|
|
|
|
// Include all the unmanaged things we need.
|
|
|
|
#include <opencv2/core/core.hpp>
|
|
#include "opencv2/objdetect.hpp"
|
|
#include "opencv2/calib3d.hpp"
|
|
#include <opencv2/imgcodecs.hpp>
|
|
#include <opencv2/imgproc.hpp>
|
|
#include <opencv2/highgui/highgui.hpp>
|
|
#include <vector>
|
|
#include <set>
|
|
|
|
#include <OpenCVWrappers.h>
|
|
|
|
// For camera listings
|
|
#include "comet_auto_mf.h"
|
|
#include "camera_helper.h"
|
|
|
|
#pragma managed
|
|
|
|
#include <msclr\marshal.h>
|
|
#include <msclr\marshal_cppstd.h>
|
|
|
|
namespace CameraInterop {
|
|
|
|
public ref class CaptureFailedException : System::Exception
|
|
{
|
|
public:
|
|
|
|
CaptureFailedException(System::String^ message): Exception(message){}
|
|
};
|
|
|
|
public ref class Capture
|
|
{
|
|
private:
|
|
|
|
// OpenCV based video capture for reading from files
|
|
cv::VideoCapture* vc;
|
|
|
|
OpenCVWrappers::RawImage^ latestFrame;
|
|
OpenCVWrappers::RawImage^ grayFrame;
|
|
|
|
double fps;
|
|
|
|
bool is_webcam;
|
|
bool is_image_seq;
|
|
|
|
int frame_num;
|
|
std::vector<std::string>* image_files;
|
|
|
|
int vid_length;
|
|
|
|
public:
|
|
|
|
int width, height;
|
|
|
|
Capture(int device, int width, int height)
|
|
{
|
|
assert(device >= 0);
|
|
|
|
latestFrame = gcnew OpenCVWrappers::RawImage();
|
|
|
|
vc = new cv::VideoCapture(device);
|
|
vc->set(CV_CAP_PROP_FRAME_WIDTH, width);
|
|
vc->set(CV_CAP_PROP_FRAME_HEIGHT, height);
|
|
|
|
is_webcam = true;
|
|
is_image_seq = false;
|
|
|
|
this->width = width;
|
|
this->height = height;
|
|
|
|
vid_length = 0;
|
|
frame_num = 0;
|
|
|
|
int set_width = vc->get(CV_CAP_PROP_FRAME_WIDTH);
|
|
int set_height = vc->get(CV_CAP_PROP_FRAME_HEIGHT);
|
|
|
|
if(!vc->isOpened())
|
|
{
|
|
throw gcnew CaptureFailedException("Failed to open the webcam");
|
|
}
|
|
if(set_width != width || set_height != height)
|
|
{
|
|
throw gcnew CaptureFailedException("Failed to open the webcam with desired resolution");
|
|
}
|
|
}
|
|
|
|
Capture(System::String^ videoFile)
|
|
{
|
|
latestFrame = gcnew OpenCVWrappers::RawImage();
|
|
|
|
vc = new cv::VideoCapture(msclr::interop::marshal_as<std::string>(videoFile));
|
|
fps = vc->get(CV_CAP_PROP_FPS);
|
|
is_webcam = false;
|
|
is_image_seq = false;
|
|
this->width = vc->get(CV_CAP_PROP_FRAME_WIDTH);
|
|
this->height = vc->get(CV_CAP_PROP_FRAME_HEIGHT);
|
|
|
|
vid_length = vc->get(CV_CAP_PROP_FRAME_COUNT);
|
|
frame_num = 0;
|
|
|
|
if(!vc->isOpened())
|
|
{
|
|
throw gcnew CaptureFailedException("Failed to open the video file");
|
|
}
|
|
}
|
|
|
|
// An alternative to using video files is using image sequences
|
|
Capture(System::Collections::Generic::List<System::String^>^ image_files)
|
|
{
|
|
|
|
latestFrame = gcnew OpenCVWrappers::RawImage();
|
|
|
|
is_webcam = false;
|
|
is_image_seq = true;
|
|
this->image_files = new std::vector<std::string>();
|
|
|
|
for(int i = 0; i < image_files->Count; ++i)
|
|
{
|
|
this->image_files->push_back(msclr::interop::marshal_as<std::string>(image_files[i]));
|
|
}
|
|
vid_length = image_files->Count;
|
|
|
|
// Read the first frame to determine the capture width and height
|
|
cv::Mat tmp = cv::imread(this->image_files->at(0));
|
|
|
|
if (tmp.empty())
|
|
{
|
|
throw gcnew CaptureFailedException("Failed to open image sequence");
|
|
}
|
|
|
|
this->width = tmp.size().width;
|
|
this->height = tmp.size().height;
|
|
|
|
}
|
|
|
|
static void split(const std::string &s, char delim, std::vector<string> &elems) {
|
|
std::stringstream ss;
|
|
ss.str(s);
|
|
std::string item;
|
|
while (std::getline(ss, item, delim)) {
|
|
elems.push_back(item);
|
|
}
|
|
}
|
|
|
|
static System::Collections::Generic::Dictionary<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^>^ GetListingFromFile(std::string filename)
|
|
{
|
|
// Check what cameras have been written (using OpenCVs XML packages)
|
|
cv::FileStorage fs_read(filename, cv::FileStorage::READ);
|
|
|
|
auto managed_camera_list_initial = gcnew System::Collections::Generic::Dictionary<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^>();
|
|
|
|
cv::FileNode camera_node_list = fs_read["cameras"];
|
|
|
|
// iterate through a sequence using FileNodeIterator
|
|
for(size_t idx = 0; idx < camera_node_list.size(); idx++ )
|
|
{
|
|
std::string camera_name = (std::string)camera_node_list[idx]["name"];
|
|
|
|
cv::FileNode resolution_list = camera_node_list[idx]["resolutions"];
|
|
auto resolutions = gcnew System::Collections::Generic::List<System::Tuple<int, int>^>();
|
|
for(size_t r_idx = 0; r_idx < resolution_list.size(); r_idx++ )
|
|
{
|
|
string res = resolution_list[r_idx]["res"];
|
|
|
|
std::vector<std::string> elems;
|
|
split(res, 'x', elems);
|
|
|
|
int x = stoi(elems[0]);
|
|
int y = stoi(elems[1]);
|
|
resolutions->Add(gcnew System::Tuple<int,int>(x, y));
|
|
}
|
|
managed_camera_list_initial[gcnew System::String(camera_name.c_str())] = resolutions;
|
|
}
|
|
fs_read.release();
|
|
return managed_camera_list_initial;
|
|
}
|
|
|
|
static void WriteCameraListingToFile(System::Collections::Generic::Dictionary<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^>^ camera_list, std::string filename)
|
|
{
|
|
cv::FileStorage fs("camera_list.xml", cv::FileStorage::WRITE);
|
|
|
|
fs << "cameras" << "[";
|
|
for each( System::String^ name_m in camera_list->Keys )
|
|
{
|
|
|
|
std::string name = msclr::interop::marshal_as<std::string>(name_m);
|
|
|
|
fs << "{:" << "name" << name;
|
|
fs << "resolutions" << "[";
|
|
auto resolutions = camera_list[name_m];
|
|
for(int j = 0; j < resolutions->Count; j++)
|
|
{
|
|
stringstream ss;
|
|
ss << resolutions[j]->Item1 << "x" << resolutions[j]->Item2;
|
|
|
|
fs << "{:" << "res" << ss.str();
|
|
fs<< "}";
|
|
}
|
|
fs << "]";
|
|
fs << "}";
|
|
}
|
|
fs << "]";
|
|
fs.release();
|
|
}
|
|
|
|
static System::Collections::Generic::List<System::Tuple<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^, OpenCVWrappers::RawImage^>^>^ GetCameras(System::String^ root_directory_m)
|
|
{
|
|
std::string root_directory = msclr::interop::marshal_as<std::string>(root_directory_m);
|
|
auto managed_camera_list_initial = GetListingFromFile(root_directory + "camera_list.xml");
|
|
|
|
auto managed_camera_list = gcnew System::Collections::Generic::List<System::Tuple<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^, OpenCVWrappers::RawImage^>^>();
|
|
|
|
// Using DirectShow for capturing from webcams (for MJPG as has issues with other formats)
|
|
comet::auto_mf auto_mf;
|
|
|
|
std::vector<camera> cameras = camera_helper::get_all_cameras();
|
|
|
|
// A Surface Pro specific hack, it seems to list webcams in a weird way
|
|
for (size_t i = 0; i < cameras.size(); ++i)
|
|
{
|
|
cameras[i].activate();
|
|
std::string name = cameras[i].name();
|
|
|
|
// TODO, something is odd here
|
|
//if(name.compare("Microsoft LifeCam Front") == 0)
|
|
//{
|
|
// cameras.push_back(cameras[i]);
|
|
// cameras.erase(cameras.begin() + i);
|
|
//}
|
|
}
|
|
|
|
|
|
for (size_t i = 0; i < cameras.size(); ++i)
|
|
{
|
|
cameras[i].activate();
|
|
std::string name = cameras[i].name();
|
|
System::String^ name_managed = gcnew System::String(name.c_str());
|
|
|
|
// List camera media types
|
|
auto media_types = cameras[i].media_types();
|
|
|
|
System::Collections::Generic::List<System::Tuple<int,int>^>^ resolutions;
|
|
std::set<std::pair<int, int>> res_set;
|
|
|
|
// If we have them just use pre-loaded resolutions
|
|
if(managed_camera_list_initial->ContainsKey(name_managed))
|
|
{
|
|
resolutions = managed_camera_list_initial[name_managed];
|
|
}
|
|
else
|
|
{
|
|
resolutions = gcnew System::Collections::Generic::List<System::Tuple<int,int>^>();
|
|
for (size_t m = 0; m < media_types.size(); ++m)
|
|
{
|
|
auto media_type_curr = media_types[m];
|
|
res_set.insert(std::pair<int, int>(std::pair<int,int>(media_type_curr.resolution().width, media_type_curr.resolution().height)));
|
|
}
|
|
}
|
|
|
|
// Grab some sample images and confirm the resolutions
|
|
cv::VideoCapture cap1(i);
|
|
// Go through resolutions if they have not been identified
|
|
if(resolutions->Count == 0)
|
|
{
|
|
for (auto beg = res_set.begin(); beg != res_set.end(); ++beg)
|
|
{
|
|
auto resolution = gcnew System::Tuple<int, int>(beg->first, beg->first);
|
|
|
|
cap1.set(CV_CAP_PROP_FRAME_WIDTH, resolution->Item1);
|
|
cap1.set(CV_CAP_PROP_FRAME_HEIGHT, resolution->Item2);
|
|
|
|
// Add only valid resolutions as API sometimes provides wrong ones
|
|
int set_width = cap1.get(CV_CAP_PROP_FRAME_WIDTH);
|
|
int set_height = cap1.get(CV_CAP_PROP_FRAME_HEIGHT);
|
|
|
|
resolution = gcnew System::Tuple<int, int>(set_width, set_height);
|
|
if(!resolutions->Contains(resolution))
|
|
{
|
|
resolutions->Add(resolution);
|
|
}
|
|
}
|
|
managed_camera_list_initial[name_managed] = resolutions;
|
|
}
|
|
|
|
cv::Mat sample_img;
|
|
OpenCVWrappers::RawImage^ sample_img_managed = gcnew OpenCVWrappers::RawImage();
|
|
|
|
// Now that the resolutions have been identified, pick a camera and create a thumbnail
|
|
if(resolutions->Count > 0)
|
|
{
|
|
int resolution_ind = resolutions->Count / 2;
|
|
|
|
if(resolution_ind >= resolutions->Count)
|
|
resolution_ind = resolutions->Count - 1;
|
|
|
|
auto resolution = resolutions[resolution_ind];
|
|
|
|
cap1.set(CV_CAP_PROP_FRAME_WIDTH, resolution->Item1);
|
|
cap1.set(CV_CAP_PROP_FRAME_HEIGHT, resolution->Item2);
|
|
|
|
for (int k = 0; k < 5; ++k)
|
|
cap1.read(sample_img);
|
|
|
|
// Flip horizontally
|
|
cv::flip(sample_img, sample_img, 1);
|
|
|
|
|
|
}
|
|
cap1.~VideoCapture();
|
|
|
|
sample_img.copyTo(sample_img_managed->Mat);
|
|
|
|
managed_camera_list->Add(gcnew System::Tuple<System::String^, System::Collections::Generic::List<System::Tuple<int,int>^>^, OpenCVWrappers::RawImage^>(gcnew System::String(name.c_str()), resolutions, sample_img_managed));
|
|
}
|
|
|
|
WriteCameraListingToFile(managed_camera_list_initial, root_directory + "camera_list.xml");
|
|
|
|
return managed_camera_list;
|
|
}
|
|
|
|
OpenCVWrappers::RawImage^ GetNextFrame(bool mirror)
|
|
{
|
|
frame_num++;
|
|
|
|
if(vc != nullptr)
|
|
{
|
|
|
|
bool success = vc->read(latestFrame->Mat);
|
|
|
|
if (!success)
|
|
{
|
|
// Indicate lack of success by returning an empty image
|
|
cv::Mat empty_mat = cv::Mat();
|
|
empty_mat.copyTo(latestFrame->Mat);
|
|
return latestFrame;
|
|
}
|
|
}
|
|
else if(is_image_seq)
|
|
{
|
|
if(image_files->empty())
|
|
{
|
|
// Indicate lack of success by returning an empty image
|
|
cv::Mat empty_mat = cv::Mat();
|
|
empty_mat.copyTo(latestFrame->Mat);
|
|
return latestFrame;
|
|
}
|
|
|
|
cv::Mat img = cv::imread(image_files->at(0), -1);
|
|
img.copyTo(latestFrame->Mat);
|
|
// Remove the first frame
|
|
image_files->erase(image_files->begin(), image_files->begin() + 1);
|
|
}
|
|
|
|
if (grayFrame == nullptr) {
|
|
if (latestFrame->Width > 0) {
|
|
grayFrame = gcnew OpenCVWrappers::RawImage(latestFrame->Width, latestFrame->Height, CV_8UC1);
|
|
}
|
|
}
|
|
|
|
if(mirror)
|
|
{
|
|
flip(latestFrame->Mat, latestFrame->Mat, 1);
|
|
}
|
|
|
|
|
|
if (grayFrame != nullptr) {
|
|
cvtColor(latestFrame->Mat, grayFrame->Mat, CV_BGR2GRAY);
|
|
}
|
|
|
|
return latestFrame;
|
|
}
|
|
|
|
double GetProgress()
|
|
{
|
|
if(vc != nullptr && is_webcam)
|
|
{
|
|
return - 1.0;
|
|
}
|
|
else
|
|
{
|
|
return (double)frame_num / (double)vid_length;
|
|
}
|
|
}
|
|
|
|
bool isOpened()
|
|
{
|
|
if(vc != nullptr)
|
|
return vc->isOpened();
|
|
else
|
|
{
|
|
if(is_image_seq && image_files->size() > 0)
|
|
return true;
|
|
else
|
|
return false;
|
|
}
|
|
}
|
|
|
|
OpenCVWrappers::RawImage^ GetCurrentFrameGray() {
|
|
return grayFrame;
|
|
}
|
|
|
|
double GetFPS() {
|
|
return fps;
|
|
}
|
|
|
|
// Finalizer. Definitely called before Garbage Collection,
|
|
// but not automatically called on explicit Dispose().
|
|
// May be called multiple times.
|
|
!Capture()
|
|
{
|
|
// Automatically closes capture object before freeing memory.
|
|
if(vc != nullptr)
|
|
{
|
|
vc->~VideoCapture();
|
|
}
|
|
if(image_files != nullptr)
|
|
delete image_files;
|
|
}
|
|
|
|
// Destructor. Called on explicit Dispose() only.
|
|
~Capture()
|
|
{
|
|
this->!Capture();
|
|
}
|
|
};
|
|
|
|
}
|