How far have you gotten on coding the camera tracking?

[mikeqfl]

We have our camera tracking ok. It commands a motor to turn a turret to keep the image in the center of its field of view. The problem we are having is the camera/turret is constantly oscillating back and forth trying to find the center. Any ideas of how to put in a PID loop into Labveiw? I am not up on the programming, just trying to help our programmer out.

[s0crates]

Originally Posted by mikeqfl

We have our camera tracking ok. It commands a motor to turn a turret to keep the image in the center of its field of view. The problem we are having is the camera/turret is constantly oscillating back and forth trying to find the center. Any ideas of how to put in a PID loop into Labveiw? I am not up on the programming, just trying to help our programmer out.

It sounds like it would be easiest for you to just have a dead zone in the center of the image - if the target is within a certain bounding box in the center of the image don't try to adjust it any further. Rather than try to center it at the center pixel, aim for a box around the center. It oscillates because the image changes slightly frame-to-frame.