Suitability for figure skating analysis | Perception Neuron by Noitom

Suitability for figure skating analysis

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kander2
Suitability for figure skating analysis

My potential application is for analyzing figure skaters in motion.  There are a number of technical questions I have.  The questions in order of importance:

1) How good is the system at measuring body motion while traveling at a high speed across the ice surface?  Ie, does it capture absolute movement through space as well as relative movement of body parts?  Can it tell the difference between skating on a straight line as opposed to a curve?   If it can't measure surface motion, is it possible to work it in post production?
2) Is the recoding range of the suit limited to the wifi range?
3) Can it accurately measure sudden and quick changes in motion?  For example, a spin or jump can rotate at 3-5 rotations per second.  Is the system fast enough to accurately record that?
4) How hard is it to add skates to the figure and a simple ice rink background?

Thanks!
Kevin

danielc
danielc's picture

Perception Neuron is using IMU sensors to track position in relative space. By calculating foot contact Axis Neuron can detect you movement in local space. If Perception Neuron has no foot contact for e.g it will not be able to detect any positional data. In a case that you suit up an ice skater, Perception Neuron will not be able to capture translation information due to the lack of foot contact on the ground. 
Perception Neuron has an option to disable foot contact and enable HIP only. This scenarion will lock the avatars hip(motion data) in a set location and provide rotation data on the rest of the skeleton data.

1) How good is the system at measuring body motion while traveling at a high speed across the ice surface?  Ie, does it capture absolute movement through space as well as relative movement of body parts?  Can it tell the difference between skating on a straight line as opposed to a curve?   If it can't measure surface motion, is it possible to work it in post production?
Since there will not be foot contact,disable the foot contact and enable HIP contact only. This will provide only rotation data of the bones. In post you will need to move the avatars translation data manually.

2) Is the recoding range of the suit limited to the wifi range?
Range is dependent on the routers coverage. PN only uses 2.4g connection, if range is a requirement, consider have a dual antenna setup. Typical coverage found in conventional routers ranges around 5 meters.

3) Can it accurately measure sudden and quick changes in motion?  For example, a spin or jump can rotate at 3-5 rotations per second.  Is the system fast enough to accurately record that?
Perception Neuron sensors have a limitation of ±16g. Based on this use, sensors will have drift over time.Axis Neuron has a ZERO function that resets PN sensors, this of course must be done while the performer/talent remains still.

4) How hard is it to add skates to the figure and a simple ice rink background?
Axis Neuron only provides motion data via FBX, BVH export. If you need to add 3d background or props, you will need to use a 3rd party 3D software pacakge (for e.g Maya, blender, iClone)

About Perception Neuron

We are part of Noitom Ltd. and dedicated to the development of motion capture systems for entertainment, sports, science and medicine.

  • 278 NE 60 St
    Miami, Florida 33137
  • (305) 521-3124
  • +86 10 82055391 ext. 852
  • contact@neuronmocap.com

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