How can I save kinect skeleton data into a file?

Question

I was able to do this in the Kinect SDK beta 3, but I haven't developed for Kinect since and a lot seems to have changed.

I want to save each joint as a variable and write those values to a .csv file that I can parse through later. (Using c# preferably, but I can work with the c++ version as well)

Question

-What do I need to call to be able to get numerical values for each of the joints?

Any help would be appriciated!

Answer 1

The Skeleton data is just a series of Joint collections, containing X/Y/Z coordinates. You can save them and write them just like any other type of object.

Getting the value of a Joint is shown in multiple examples provided by Microsoft for the Kinect for Windows Samples. Please explore those examples to gain a basis for working with the latest Kinect SDK.

Here is a basic callback to parse the SkeletonFrame and work with individual skeletons:

private void OnSkeletonFrameReady(object sender, SkeletonFrameReadyEventArgs e)
{
    using (SkeletonFrame skeletonFrame = e.OpenSkeletonFrame())
    {
        if (skeletonFrame == null || skeletonFrame.SkeletonArrayLength == 0)
            return;

        // resize the skeletons array if needed
        if (_skeletons.Length != skeletonFrame.SkeletonArrayLength)
            _skeletons = new Skeleton[skeletonFrame.SkeletonArrayLength];

        // get the skeleton data
        skeletonFrame.CopySkeletonDataTo(_skeletons);

        foreach (var skeleton in _skeletons)
        {
            // skip the skeleton if it is not being tracked
            if (skeleton.TrackingState != SkeletonTrackingState.Tracked)
                continue;

            // print the RightHand Joint position to the debug console
            Debug.Writeline(skeleton.Joints[JointType.HandRight]);
        }
    }
}

Additionally, the Kinect Toolbox comes with functions that allow you to record and replay all 3 of the streams.