Hi all:
Are there any windows-based programs out there that can detect a bright spot (say a laser pointer or IR LED) on a video feed and return simple coordinates as to its location within the frame. I'm looking for something self-contained but would also be interested in Visual C, or Visual Basic libraries.
Thanks in advance.
-Will
Later, Jon
-------------------------------------------------------------- Jon Hylands snipped-for-privacy@huv.com
Be sure to check out the multi-part article in SERVO Magazine on OpenCV. Also visit the author's home page at
You should also check out CodeProject
If the frame rate is low enough, you could probably do this internally in a C#/VB app using DirectShowNet only, and creating the threshhold algorithm yourself in code. Look for the sample applications that use the SampleGrabber filter and interface. This filter allows you to inspect the RGB pixels of a video stream. You should not use this technique with 30 fps video as it will be too slow, especially in VB.NET. You get better speed using unsafe memory pointers in C# -- various code sources on the Web demonstrate how to do this. For this type of image analysis a frame rate of 8-10 fps is usually sufficient.
-- Gordon
Thanks to Jon and Gordon for your responses, I'll check out all your suggested resources.
Have something to add? Share your thoughts — no account required.
Ask the community — no account required