Axis Software Setup

Axis Studio Settings

• Skeleton: Axis Legacy
• BVH Format
  • Rotation: YXZ
  • Displacement: Enabled
• Frame Format
  • Type: Binary
  • Use old header format: Disabled
• Protocol: UDP
• Local Address: 127.0.0.1:7003
• Destination Address: 255.255.255.255:7001

Axis Neuron/ Axis Neuron Pro Settings

• Go to File --> Settings --> Broadcasting  
• Select UDP
• Enable BVH 
• ClientPort: 7002

Installation

• Houdini natively supports Perception Neuron through the MOCAP STREAM node. No additional download is needed

• Requirements:

  • Houdini version 19

Setup in Houdini 

• In the Node Editor, create a Geometry node and open the Geometry node
• We'll create the following graph:

• Add an FBX Character Import node  
  • Use this node to add your character to the scene  
• Add a Mocap Stream node
  • Select the Mocap Stream node and apply the settings from Axis Software
• Add a Joint Deformation node and connect it to the FBX Character Import node
• Add a Rig Match Pose node and have the FBX Character Import and Mocap Stream node both feed into it
  • Display the Rig Match Pose node, click on the Viewport and hit enter.  Now you can modify the skeleton into a perfect T-pose if needed
  • Uncheck: Enable Match Bones

• Add a Map Points node and connect it to the Rig Match Pose node 
• Turn display on for the Map Points node
  • Change the target guide offset to 0.3 in z
  • Click on the Viewport and click enter  
  • Connect all the points between the skeletons
  • Under Align Guide, uncheck Translate

• Add a Full Body IK node and connect it to the Map Points node
• Connect the Full Body IK to Bone Deform
• Turn on the display on the Bone Deform node

• In the Mocap Stream node, click Connect and your data should play in real time