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POKinect sideways skeleton tracking
 

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  1. POKinect sideways skeleton tracking
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    <p>Currently I am using the Microsoft Kinect for measuring angles between joints. Most measurements are working correctly. Whenever a person is sitting sideways (on a chair) the Kinect won't track the skeleton accurate. To illustrate my problem I've added 3 pictures of the Kinect depthview.</p> <p><img src="https://i.stack.imgur.com/gstiU.jpg" alt="Seated sideways measurement with skeleton tracking"></p> <p><img src="https://i.stack.imgur.com/R8Dxk.jpg" alt="Seated sideways measurement without skeleton tracking"></p> <p><img src="https://i.stack.imgur.com/JYF5f.jpg" alt="Sideways measurement with skeleton tracking"></p> <p>As you can see 2 out of 3 measurements work "correctly". Whenever I lift my leg, the Kinect stops skeleton tracking correctly. Does anyone have a solution to this problem, or is this just a limitation of the Kinect?</p> <p>Thanks.</p> <p><strong>Update 1:</strong> The <code>JointTrackingState-Enumeration</code> on these tracked joints shown at screenshot 2 are marked as <code>Inferred</code>, however the depth view is tracking my full body.</p> <p><strong>Update 2:</strong> At screenshot 2 I'm trying to track my front leg, highlighted as green. I know the other leg isn't tracked but this does not matter, I guess.</p> <p><strong>Update 3:</strong> The following code selects a skeleton:</p> <pre><code>private Skeleton StickySkeleton(Skeleton[] skeletons) { if (skeletons.Count&lt;Skeleton&gt;(skeleton =&gt; skeleton.TrackingId == _trackedSkeletonId) &lt;= 0) { _trackedSkeletonId = -1; _skeleton = null; } if (_trackedSkeletonId == -1) { Skeleton foundSkeleton = skeletons.FirstOrDefault&lt;Skeleton&gt;(skeleton =&gt; skeleton.TrackingState == SkeletonTrackingState.Tracked); if (foundSkeleton != null) { _trackedSkeletonId = foundSkeleton.TrackingId; return foundSkeleton; } } return _skeleton; } </code></pre> <p>Whenever a skeleton is tracked that data will be used for drawing the joint-points and calculating the angle between joints.</p> <p><strong>Update 4:</strong> I've tested sitting on a 'block', far more simplified than a chair. Unfortunately the Kinect still acts the same.</p> <p>Below 2 screenshots:</p> <p><img src="https://i.stack.imgur.com/shTks.png" alt="Sitting on a block 1"></p> <p><img src="https://i.stack.imgur.com/XkOvP.png" alt="Sitting on a block 2"></p>
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    1. COI have had many problems, when i sit on something or took something in hands. So i think that this is limitation of the kinect.
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    2. COHowever my full body is highlighted in screenshot 1 and 2. So I can't see why the Kinect isn't able to track my leg. The `JointTrackingState` value on these joints are marked as `Inferred` while the depth view is tracking my leg..
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    3. CODo you mean your back leg isnt seen as well?
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      1. USLiam McInroy
 

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