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Can I make some c++ webcam program without using opencv (and without others external library)? My idea is to take the data from the webcam and display it on window, like a live video.
Could you show me some example?
Sorry for my bad english. Thank you very much.
Long story short: for windows and C/C++ the most straightforward way is by using the DirectShow.
There is a nice wrapper of DirectShow framegrabber here: http://www.muonics.net/school/spring05/videoInput/
Yes, you still need the DXSDK installed, but actually I managed to extract the required DShow interfaces into the single 100kb file. So my advice: live with the videoInput library.
On linux the Video4Linux(2) library is somewhat simpler. Everything is done through file-like APIs.
On MacOS X you have the QTKit. To make a simple window with live camera stream is a breeze. The sample is right in the Apple’s documentation.