Place markers on a performer

To place markers on a performer:

1. Attach your chosen marker set to the performer(s). The following images show the standard Vicon FrontWaist 53-marker set, and also show the placement of a cluster.

   

   These images show the placement of markers for the Production marker set (with 10 finger-markers):

   

   If you're using side waist markers, place the waist marker(s) at the sides of the performer's waist:

   

2. Ensure that the foot markers are placed so that the toe marker is as far forward as possible on the foot while still facing upward. Also ensure that the three other markers (the heel marker and the two markers on either side of the front of the foot) are in the same plane, and are as low (ie near to the floor), as possible. For optimal performance, ensure that the toe marker is higher than the three which form this plane.

   

3. If you're using finger markers, place them on the hands.

   Follow these guidelines to ensure that the finger markers produce an accurate solve:

   • Wrists : The wrist marker placement is important because the foundation of a good finger solve is a correctly solved wrist. Place the wrist markers on either side of the wrist so that both markers are the same distance down the arm and as close to the joint center as possible.
   • Hands : Place the hand markers just before the knuckle of the index and pinky finger.

   • Fingers: For 3 finger-marker setups, place a marker just before the first joint of the index, pinky, and thumb, so that it is not affected by rotation of the second joint (see the photo of the 3 finger marker set).

     For 5 finger-marker setups, place the markers at the end of each of the five fingers (see the photo of the 5 finger-marker set).

     For 10 finger-marker setups, place the markers at the end of each finger, and mid markers on the second phalange apart from the mid (see the photo of the 10 finger-marker set).

   • Upper arms and legs: To help with calibration, place offset markers on the upper arms and legs.

     These images show placement of the wrist, hand, and finger markers in a three-finger setup:

     

     This image shows placement of the wrist, hand, and finger markers in a 5 finger-marker set:

     

     This image shows placement of the wrist, hand, and finger markers in a 10 finger-marker set:

     

     Placement for all the finger marker sets, as displayed in Shogun, is shown below:

     See Finger marker placement table

     Finger marker size: For a successful calibration, choose the correct size of markers for the hands, fingers and wrists:
     

     • Hand markers. Marker size is critical for the wrist rotation in the A-pose. If you use large markers, this can cause an upward rotation of the the wrist and downward rotation of the knuckles. For the best results, we recommend that the markers' centers are about 10 mm from the joint axis.
     • Finger markers. Marker size is also important for calibration. For the best results, we recommend that the markers' centers are about 5 mm from the joint axis.
     • Wrist markers. Marker size does not affect calibration, so you can use normal body-size markers or finger-size markers.

4. If you're using clusters (see Add clusters to the Shogun Live datastore), if you haven't already done so, place them on the performer(s). Normally, a good location for the cluster is on the torso, but not too close to other markers. This can be on the front, as shown in the following image, or on the back, as shown in the illustrations in Step 1.

   

When you've attached the markers to the performer(s), create the relevant subjects in Shogun Live and calibrate them (see Create and calibrate a subject).

Finger marker placement table