CODEWITHSUNDEEP
c#kinect
ravithejag
ravithejag

Reputation: 608

Kinect user Detection

I am developing an application When an kinect sensor detects an skeleton that person can work on it if other person comes near to the existing user it detects the second person.
I want to restrict to the user the kinect sensor first detects it if other user comes this should not detect the other one.
thanks in advance

Upvotes: 3

Views: 8892

Answers (5)

Codemaker2015
Codemaker2015

Reputation: 1

KinectManager kinectManager = KinectManager.Instance;
AvatarController avatarCtrl = avatar ? avatar.gameObject.GetComponent<AvatarController> () : null;

if (kinectManager != null && kinectManager.IsInitialized () && avatar != null && avatarCtrl && kinectManager.IsUserTracked (avatarCtrl.playerId)) {
        //User detected. You can do the remaining thing.
}

Upvotes: 0

mahsa.teimourikia
mahsa.teimourikia

Reputation: 1774

In one of the kinect quick start tutorials there is a method for detecting only one user. I tried it for my own application and it worked. 

using (SkeletonFrame skeletonFrame = e.OpenSkeletonFrame())
{
    if (skeletonFrame == null)
                return;

    Skeleton[] skeletons= new Skeleton[skeletonFrame.SkeletonArrayLength];
    skeletonFrame.CopySkeletonDataTo(skeletons);

    if (skeletons.All(s => s.TrackingState == SkeletonTrackingState.NotTracked))
                return;

    Skeleton skeleton = (from s in skeletons
                                 where s.TrackingState == SkeletonTrackingState.Tracked
                                 select s).FirstOrDefault();
    if (skeleton == null) return;

    // TODO: Do something to the skeleton data...

}

Upvotes: 0

Liam McInroy
Liam McInroy

Reputation: 4356

Also see Jurgeon D's answer on Kinect SDK player detection, as it deals with skeleton index. @Fixus is also right in that you could use a ID. But if you mean more than 2 people are detected, then only one is detected, that is not programming, that is in the Kinect's hardware and @FelixK. was right.

Skeletal Index

void nui_SkeletonFrameReady(object sender, SkeletonFrameReadyEventArgs e) 
{
    SkeletonFrame sf = e.SkeletonFrame;
    //check which skeletons in array are active and
    // use that array indexes for player index
    SkeletonData player1 = sf.Skeletons[playerIndex1];
    SkeletonData player2 = sf.Skeletons[playerIndex2];
}

Skeletal IDs

void nui_SkeletonFrameReady(object sender, SkeletonFrameReadyEventArgs e)
{
    SkeletonFrame sf = e.SkeletonFrame;

    if (sf.TrackingState == SkeletalTrackingState.Tracked)
     {
          int ID1 = sf.TrackingID;
     }

Also the code for detecting humans

 DepthImageFrame depthFrame;
 short[] rawDepthData = new short[depthFrame.PixelDataLength];
 depthFrame.CopyPixelDataTo(rawDepthData); 
 Byte[] pixels = new byte[depthFrame.Height * depthFrame.Width * 4];     
 int player = rawDepthData[depthIndex] & DepthImageFrame.PlayerIndexBitmask;

 if (player > 0)
 {
     //do something
 }

Upvotes: 7

Fixus
Fixus

Reputation: 4641

Kinect will detec the new user cause it is his job :) BUT remember that every user has his own ID so you always know that the first user is first and second is second. That way you can work only on the skeleton of the user that you want to work with

Upvotes: 4

Felix K.
Felix K.

Reputation: 6281

If i understand your question correctly this is not possible, you can't modify the Kinects behaviour and how it detects users ( If there is nothing in the Framework; i don't think there is something ).

You have to solve this in your code.

Upvotes: 3

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