CODEWITHSUNDEEP
c#emgucv
rkmax
rkmax

Reputation: 18133

EmguCV TypeInitializationException

i really a newbie with EgmuCV

i try to capture images from webcam with the following code:

//Program.cs (Winform)
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

using Emgu.CV;
using Emgu.CV.UI;
using Emgu.Util;
using Emgu.CV.Structure;

namespace EgmuCVTest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Capture cp = new Capture();
            ImageViewer imv = new ImageViewer();

            Application.Idle += new EventHandler(delegate(object s, EventArgs ea)
            {
                imv.Image = cp.QueryFrame();
            });

            imv.ShowDialog();

        }
    }
}

i get the follow error:

enter image description here

i check and have all necesary dll in the .exe folder

Upvotes: 14

Views: 28434

Answers (7)

Semih Gençel
Semih Gençel

Reputation: 3

If Windows has been newly installed (you have not installed any other programs), install Microsoft visual C++ 2010 x86 Redistributable.

Upvotes: 0

Shashank
Shashank

Reputation: 11

I am using Emgu.CV 4.4.0.4099 and got the same exception. Here is the steps I followed to fix it.

  1. Copy cvextern.dll to output directory.
  2. Installing Emgu.CV.runtime.windows nuget package.

Upvotes: 1

Minion
Minion

Reputation: 1064

Just copy the cvextern.dll file from x64 folder if you are using 64bit OS and then copy it to the debug folder of your project.

Note: Do it manually because "add existing item" doesn't copy it.

Upvotes: 0

Jack Miller
Jack Miller

Reputation: 7657

This problem also occurs if you are using OpenCV DLL compiled with GPU support but your PC doesn't have a GPU, e.g. if you are using a portable computer with Intel graphics chipset.

In this case you can use the older version 2.4.0 which still offers DLL without GPU support:

https://sourceforge.net/projects/emgucv/files/emgucv/2.4.0/libemgucv-windows-x64-2.4.0.1717.zip

Upvotes: 1

fian
fian

Reputation: 61

I'm using Emgu 3.0 64 bit and the only thing i need to do to fix this problem is change the build type in my project into x64.

Right click on your project's name -> Properties -> Build -> Platform Target -> x64

refer to http://www.codeproject.com/Articles/257502/Creating-Your-First-EMGU-Image-Processing-Project

hope it helps someone.

Upvotes: 5

Denis
Denis

Reputation: 664

Another case that happened to me was that I had a NuGet package that was installed but not loaded for my project so the references looked good but at run-time, I got the TypeInitializationException.

-manage NuGet packages

-clock manage on the package

-check the box with the current project.

Upvotes: 1

rkmax
rkmax

Reputation: 18133

After experiencing this same problem for a while, I found the instructions for solving this (TypeInitializer Exception) are incomplete.

  1. For a basic app, you need cvextern.dll, Emgu.CV.dll, Emgu.CV.UI.dll, Emgu.Util.dll in the .EXE's directory.

  2. You need a x86(x64) dir in the .exe directory and inside "x86" dir you need opencv_calib3dXXX.dll, opencv_contribXXX.dll, opencv_coreXXX.dll, opencv_features2dXXX.dll, opencv_highguiXXX.dll, opencv_imgprocXXX.dll, opencv_legacyXXX.dll, opencv_mlXXX.dll, opencv_objectdetectXXX.dll, opencv_videoXXX.dll and cudart32_42_9.dll, npp32_42_9.dll, opencv_flann240.dll

The app will work as soon as you include all of the required DLLs.

Upvotes: 23

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