When I worked on another project, I got this method to implement motion detection.
I tried some other ways to do this motion detection. But I got frustrated when I used them. Because I don't really need any advanced algorithms to do this one, I thought a little and got a nice idea to do it. And you can also do it now.
Just about 5 lines in Visual C++ .NET code and a few lines in Flash Action Script.
Background + Prerequisites
You should have pre-installed the .NET version 1.1 and Flash player 6 or higher for testing this code. They are freely available at the links given below:
Using the Code
The first message comes when the application starts. The others come when it detects motion. The camera preview part and the motion detecting part are actually being done by the flash scripts. Finally the Visual C++ .NET application gets the motion via VC COM interface
camera = Camera.get();
camera.onActivity = function(mode)
trace("Kawru hari awa. Camerawa langata.");
Camera.get(); will return the camera object with the default connected interface. Then we can set the motion level and the quality. Finally attach the camera object to the Embedded Video object.
When activity happens, it gives the feed into the VC++.
String* sFlashPath = System::Environment::CurrentDirectory;
String* sCurrentDir = sFlashPath;
file = new String("\\detector.swf");
sFlashPath = String::Concat(sFlashPath, file);
iStartApp = 0;
In Visual C++ .NET, just use the
axShockwaveFlash COM interface to load the Main Flash GUI. Then use
axShockwaveFlash1_FSCommand event to interface with the COM.