系統win7 32位，只在這一台電腦上出現這種問題，已知VS編譯是X86，在數台電腦上測試都正常。
后來把opencv的dll路徑例如 E:\...\x86 加入到系統環境變量中就正常了。
emgucv安裝里opencv的dll路徑是這個樣子 C:\Emgu\emgucv-windows-universal 3.0.0.2157\bin\x86，發布時把bin下的dll包括x86等拷貝到程序安裝目錄下。
但很奇怪這一台電腦無法使用，理論上emgucv發布不需要環境變量的。
還是要繼續研究，歡迎知道的解答下。
官方解釋：
The type initializer for 'Emgu.CV.CvInvoke' threw an exception.
If you see this exception, please check the following
Have you installed MSVCRT?
- For Version 3.0+, the required vcrt dlls are included in the "x86" and "x64" folder. You will be ready as long as you copy all the unmanaged dlls in the "x86" and "x64" folder to the folder of executable.
- For Version 2.4+, the bundled OpenCV binary is build with Visual Studio 2010, you will needs to installed MSVCRT 10.0 SP1 x86 or MSVCRT 10.0 SP1 x64 to resolve the dependency issue.
- For Version 2.0+, the bundled OpenCV binary is build with Visual Studio 2008, you will needs to installed MSVCRT 9.0 SP1 to resolve the dependency issue.
- For Version 1.5, the bundled OpenCV pre1.1 binary is build with Visual Studio 2005, you will needs to installed MSVCRT 8.0 SP1 to resolve the dependency issue.
Have you copied the OpenCV dlls to the execution directory?
- Make sure the unmanaged DLLs are in the execution directory.
- For Emgu CV version >=2.4.2, this means the "x86" and "x64" folder and all the dlls within the folders. The folder names and file structures should not be altered when deploying with the application.
- For EMGU CV version 2.4
cudart64_42_9.dll, cvextern.dll, npp64_42_9.dll, opencv_calib3dXXX.dll, opencv_contribXXX.dll, opencv_coreXXX.dll, opencv_features2dXXX.dll, opencv_flannXXX.dll, opencv_highguiXXX.dll, opencv_imgprocXXX.dll, opencv_legacyXXX.dll, opencv_mlXXX.dll, opencv_nonfreXXX.dll, opencv_objectdetectXXX.dll, opencv_videoXXX.dll,</code?> where <code>XXXis the OpenCV version number. - For Emgu CV version 2.2, 2.3 this means the following dlls:
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.dllwhereXXXis the OpenCV version number. - For Emgu CV version <= 2.1, this means the following dlls:
cvXXX.dll, cvauxXXX.dll, cxcoreXXX.dll, highguiXXX.dll, opencv_ffmpegXXX.dll, mlXXX.dllcvextern.dllwhereXXXis the OpenCV version number.
- The best way to set up your project is:
- Copy the unmanaged DLLs to your project folder
- Right click on the project, click Add->Existing Item and select all unmanaged DLLs. Add them to the project.
- For each of the included Dlls, left click on it, find the "Copy to Output Directory" option and select "Copy if newer"
Are you missing any dependency?
Download Dependency Walker and use it to open the "cvextern.dll" file. Check if any dependency is missing.
I have checked all of above but I still got the Exception
In this case, please try to build and run the examples. After building the examples, try to run the "Hello World" Program.
If "Hello World" runs without any problem, compare it with you project, find the difference in configuration and fix it.
If "Hello World" get the same "The type initializer for 'Emgu.CV.CvInvoke' threw an exception." message, try to find out the InnerException and report it to the discussion forum