Blob Detection OpenCV

Typically how much time would it take to capture an image feed from a webcam and detect a blob in it?

开发者_如何学编程Can it be done real time?

I am new to OpenCV, wanted to clarify few things before I jump in to coding.

thanks

Yes it can be done in realtime. Check the CMVision library. They've got some blazingly fast code for segmenting an image based on colour.

There a library to work with blob. Works fine and its complementary with OpenCV. Its name is cvBlob. Search in google the page in googlecode. There are easy examples to know how to use it.

I'm not the creator but i work with it a think its great.

Good Work.