LED Tracking with Unity & emguCV

Questions & Answers
1

Hi!

I am currently working on a project, where i am trying to track four LED’s with a camera.
When a LED is found in the camera image it shall be tracked immediately.
For the beginnning it should work with four LED’s, later it should be irreleveant, how many LED’s there are.

The programm should get the coordinates of the four LED’s so that i can work with that.

I have tried a first approach with binary tresholding and contour finding, but that creates errors, like points found anywhere else.

Does anyone have a maybe better approach?

br

2

The detection is working now. Code:

Image<Gray, Byte> cannyImage = _capture.QueryGrayFrame().ThresholdBinary(new Gray(250), new Gray(255)).Canny(new Gray(255).Intensity, new Gray(255).Intensity);
int count = 0;

for (Contour<Point> contours = cannyImage.FindContours(
                Emgu.CV.CvEnum.CHAIN_APPROX_METHOD.CV_CHAIN_APPROX_SIMPLE,
                Emgu.CV.CvEnum.RETR_TYPE.CV_RETR_EXTERNAL); contours != null; contours = contours.HNext)
{
    float x = (float)contours.BoundingRectangle.X;
    float y = (float)contours.BoundingRectangle.Y;
    ....
}