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I am looking for a function callable within VB.net that would measure how out of focus or blurry a still video frame is.

tshepang
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user3257674
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  • There are probably lots of ways! What have you tried? Been a while since I've done VB, but you can probably connect via a DLL, have a C process do openCV and connect via a socket in VB, spin up a CORBA ORB that contains C code that interfaces with openCV and the VB client... – James Kingsbery Jan 31 '14 at 22:02

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Emgu CV works with .Net languages (naturally including VB.Net).
http://www.emgu.com/wiki/index.php/Main_Page

There have been a great discussion on Stack Overflow already as well,
.Net (dotNet) wrappers for OpenCV?

And some links(with accepted answers) from stackoverflow regarding how much blurry a frame is
Is there a way to detect if an image is blurry?
Detection of Blur in Images/Video sequences

Community
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Abdullah Leghari
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According to the OpenCV homepage:

It has C++, C, Python and Java interfaces and supports Windows, Linux, Mac OS, iOS and Android.

So the answer is no, it is not just for C developers, but no, not VB developers.

Ask here for more detailed information.

Since it's an API however, it can be wrapped so that you can call it's functions from a programming language of your choice.

Thankfully this has been done for you already! It's called Emgu CV.

Scott Solmer
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