Emgu OpenCV Intptr 到 IplImage？

Question

I'm using the Emgu OpenCV C# wrapper, and I'm trying to convert the IntPtr(s) that its functions return and access the actual IplImage OpenCV objects. Any ideas? I'm new to C#, so any suggestion is welcome.

Cheers.

Answer 1

Well, got the solution, and posting it here -

 IntPtr rgb32; 

...

 MIplImage rgb32Image = new MIplImage();
 rgb32Image = (MIplImage)Marshal.PtrToStructure(rgb32, typeof(MIplImage));

Where, of course, rgb32Image is what's needed.

Answer 2

In the year 2020 version 4.2 you can use:

Emgu.CV.Image<TColor, TDepth>.FromIplImagePtr(System.IntPtr)

Note: Also recognize that from v4.2 on to convert a bitmap into a Image<,>, you now have to use the Bitmap extension method ToImage<,>() found in the Emgu.CV.runtime.windows Nuget package (see http://www.emgu.com/wiki/index.php/Version_History#Emgu.CV-4.2.0 ). That gave me some headache in the beginning.