open source pkg v1
This commit is contained in:
Vijay Yadev
284
pkg/OpenFace/lib/local/CppInerop/OpenCVWrappers.h
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284
pkg/OpenFace/lib/local/CppInerop/OpenCVWrappers.h
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///////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2017, Carnegie Mellon University and University of Cambridge,
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// all rights reserved.
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//
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// ACADEMIC OR NON-PROFIT ORGANIZATION NONCOMMERCIAL RESEARCH USE ONLY
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//
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// BY USING OR DOWNLOADING THE SOFTWARE, YOU ARE AGREEING TO THE TERMS OF THIS LICENSE AGREEMENT.
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// IF YOU DO NOT AGREE WITH THESE TERMS, YOU MAY NOT USE OR DOWNLOAD THE SOFTWARE.
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//
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// License can be found in OpenFace-license.txt
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// * Any publications arising from the use of this software, including but
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// not limited to academic journal and conference publications, technical
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// reports and manuals, must cite at least one of the following works:
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//
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// OpenFace 2.0: Facial Behavior Analysis Toolkit
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// Tadas Baltrušaitis, Amir Zadeh, Yao Chong Lim, and Louis-Philippe Morency
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// in IEEE International Conference on Automatic Face and Gesture Recognition, 2018
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//
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// Convolutional experts constrained local model for facial landmark detection.
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// A. Zadeh, T. Baltrušaitis, and Louis-Philippe Morency,
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// in Computer Vision and Pattern Recognition Workshops, 2017.
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//
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// Rendering of Eyes for Eye-Shape Registration and Gaze Estimation
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// Erroll Wood, Tadas Baltrušaitis, Xucong Zhang, Yusuke Sugano, Peter Robinson, and Andreas Bulling
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// in IEEE International. Conference on Computer Vision (ICCV), 2015
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//
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// Cross-dataset learning and person-specific normalisation for automatic Action Unit detection
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// Tadas Baltrušaitis, Marwa Mahmoud, and Peter Robinson
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// in Facial Expression Recognition and Analysis Challenge,
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// IEEE International Conference on Automatic Face and Gesture Recognition, 2015
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//
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///////////////////////////////////////////////////////////////////////////////
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// OpenCVWrappers.h
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#pragma once
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#pragma managed
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#include <msclr\marshal_cppstd.h>
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#pragma unmanaged
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#include <opencv2/core/core.hpp>
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#include <opencv2/highgui/highgui.hpp>
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#pragma managed
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#pragma make_public(cv::Mat)
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using namespace System::Windows;
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using namespace System::Windows::Threading;
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using namespace System::Windows::Media;
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using namespace System::Windows::Media::Imaging;
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namespace OpenCVWrappers {
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public ref class RawImage : System::IDisposable
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{
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private:
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cv::Mat* mat;
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public:
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static int PixelFormatToType(PixelFormat fmt)
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{
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if (fmt == PixelFormats::Gray8)
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return CV_8UC1;
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else if (fmt == PixelFormats::Bgr24)
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return CV_8UC3;
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else if (fmt == PixelFormats::Bgra32)
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return CV_8UC4;
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else if (fmt == PixelFormats::Gray32Float)
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return CV_32FC1;
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else
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throw gcnew System::Exception("Unsupported pixel format");
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}
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static PixelFormat TypeToPixelFormat(int type)
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{
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switch (type) {
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case CV_8UC1:
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return PixelFormats::Gray8;
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case CV_8UC3:
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return PixelFormats::Bgr24;
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case CV_8UC4:
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return PixelFormats::Bgra32;
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case CV_32FC1:
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return PixelFormats::Gray32Float;
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default:
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throw gcnew System::Exception("Unsupported image type");
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}
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}
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RawImage(const cv::Mat& m)
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{
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mat = new cv::Mat(m.clone());
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}
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// Constructing a raw image from bitmap
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RawImage(System::Drawing::Bitmap^ bitmap)
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{
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auto fmt = bitmap->PixelFormat;
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if (fmt == System::Drawing::Imaging::PixelFormat::Format24bppRgb)
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{
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mat = new cv::Mat(cv::Size(bitmap->Width, bitmap->Height), CV_8UC3);
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}
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else if (fmt == System::Drawing::Imaging::PixelFormat::Format32bppArgb)
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{
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mat = new cv::Mat(cv::Size(bitmap->Width, bitmap->Height), CV_8UC4);
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}
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else
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{
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throw gcnew System::Exception("Unsupported image type");
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}
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auto rect = System::Drawing::Rectangle(0, 0, bitmap->Width, bitmap->Height);
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auto bitmap_data = bitmap->LockBits(rect, System::Drawing::Imaging::ImageLockMode::ReadOnly, bitmap->PixelFormat);
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System::IntPtr source_data = bitmap_data->Scan0;
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int bytes = bitmap_data->Stride * bitmap_data->Height;
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memcpy(mat->data, source_data.ToPointer(), bytes);
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//Unlock the bits.
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bitmap->UnlockBits(bitmap_data);
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if (fmt == System::Drawing::Imaging::PixelFormat::Format32bppArgb)
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{
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cv::cvtColor(*mat, *mat, cv::COLOR_RGBA2RGB);
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}
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}
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void Mirror()
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{
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cv::flip(*mat, *mat, 1);
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}
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// Finalizer. Definitely called before Garbage Collection,
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// but not automatically called on explicit Dispose().
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// May be called multiple times.
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!RawImage()
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{
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if (mat)
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{
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delete mat;
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mat = NULL;
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}
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}
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// Destructor. Called on explicit Dispose() only.
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~RawImage()
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{
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this->!RawImage();
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}
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property int Width
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{
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int get()
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{
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return mat->cols;
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}
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}
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property int Height
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{
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int get()
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{
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return mat->rows;
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}
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}
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property int Stride
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{
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int get()
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{
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return (int) mat->step;
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}
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}
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property PixelFormat Format
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{
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PixelFormat get()
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{
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return TypeToPixelFormat(mat->type());
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}
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}
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property cv::Mat& Mat
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{
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cv::Mat& get()
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{
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return *mat;
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}
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}
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property bool IsEmpty
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{
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bool get()
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{
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return !mat || mat->empty();
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}
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}
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bool UpdateWriteableBitmap(WriteableBitmap^ bitmap)
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{
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if (bitmap == nullptr || bitmap->PixelWidth != Width || bitmap->PixelHeight != Height || bitmap->Format != Format)
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return false;
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else {
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if (mat->data == NULL) {
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cv::Mat zeros(bitmap->PixelHeight, bitmap->PixelWidth, PixelFormatToType(bitmap->Format), 0);
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bitmap->WritePixels(Int32Rect(0, 0, Width, Height), System::IntPtr(zeros.data), Stride * Height * (Format.BitsPerPixel / 8), Stride, 0, 0);
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}
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else {
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bitmap->WritePixels(Int32Rect(0, 0, Width, Height), System::IntPtr(mat->data), Stride * Height * (Format.BitsPerPixel / 8), Stride, 0, 0);
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}
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return true;
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}
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}
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WriteableBitmap^ CreateWriteableBitmap()
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{
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return gcnew WriteableBitmap(Width, Height, 72, 72, Format, nullptr);
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}
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};
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public ref class VideoWriter
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{
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private:
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// OpenCV based video capture for reading from files
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cv::VideoWriter* vc;
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public:
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VideoWriter(System::String^ location, int width, int height, double fps, bool colour)
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{
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msclr::interop::marshal_context context;
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std::string location_std_string = context.marshal_as<std::string>(location);
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vc = new cv::VideoWriter(location_std_string, cv::VideoWriter::fourcc('D', 'I', 'V', 'X'), fps, cv::Size(width, height), colour);
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}
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// Return success
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bool Write(RawImage^ img)
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{
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if (vc != nullptr && vc->isOpened())
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{
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vc->write(img->Mat);
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return true;
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}
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else
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{
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return false;
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}
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}
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// Finalizer. Definitely called before Garbage Collection,
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// but not automatically called on explicit Dispose().
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// May be called multiple times.
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!VideoWriter()
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{
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if (vc != nullptr)
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{
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vc->~VideoWriter();
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}
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}
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// Destructor. Called on explicit Dispose() only.
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~VideoWriter()
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{
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this->!VideoWriter();
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}
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};
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}
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