pknam / OpencvWithCLR

Sample project using OpenCV with CLR

Using OpenCV with Managed C++(CLR) and WinForm

Build Environment

• Windows 10
• Visual Studio 2015
• OpenCV 2.4.9 (32bit)

Project Settings

1. Create a new CLR Empty Project
2. Right click the project, navigate to Add-new item
3. Add a new Visual C++-UI-Windows Form. Then there sould be MyForm.cpp and MyForm.h
4. Copy & paste the following code in MyForm.cpp

#include "MyForm.h"

using namespace System;
using namespace System::Windows::Forms;

[STAThread]
System::Void Main(array<System::String^>^ args)
{
	Application::EnableVisualStyles();
	Application::SetCompatibleTextRenderingDefault(false);
	Application::Run(gcnew clr_test::MyForm());
}

5. Go to Project property
   1. Set Linker-System-Subsystem to /SUBSYSTEM:WINDOWS
   2. Set Linker-Advanced-Entry Point to Main
   3. Set the paths of header and lib files of OpenCV
6. Build and run. Enjoy the OpenCV with CLR!

OpenCV Mat to .Net Bitmap

private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
	Mat img = imread("D:\\opencv-2.4.9\\Lenna.jpg");
	Bitmap^ bmp = gcnew System::Drawing::Bitmap(
		img.cols, img.rows, img.step,
		System::Drawing::Imaging::PixelFormat::Format24bppRgb,
		(System::IntPtr)img.ptr());

	pictureBox1->Image = bmp;
	pictureBox1->Refresh();
}