In my interest in motion capture, I would like to envision particles to create a human body form and trace the movements, like light sparkles, sand, water, light streaks, cloth, these different textures to explore in motion. Using the environment’s shadow and light to create a 3D space interacting with the moving body.
Motive Lab 1
Thanks to the amazing Gabriel, we managed to have a fun, party video of calibrating cameras with motion capture!
Thanks to the group Yiyao Nie, Yu-Hsuan, Yibing and Gabriel!
- At the live camera, use the tracking stick to swipe continuously in front of all the cameras until each camera reached 10,000 samples.
- Press calculate and it will calibrate the cameras’ positions.
- Use an L shape calibrator, by pointing Z-axis towards the character, to calibrate the ground of the cameras with offset.
Recording assets at Motive
- Right-click the rigid body > Create from selected markers
- Record live sessions and save as .fbx format
- Select Data streaming under “View” tab to stream the rigid bodies to Unreal Engine
Connecting live streaming between Motive and Unreal
- Under the Motive’s OptiTrack Streaming Engine > Network Interface > find server address [126.96.36.199]
- Under Unreal Engine (4.19 version), create Optitrack Client Origin & Optitrack Rigid Body Actor, set both Movable
- At the Optitrack Client Origin, go to Optitrack and input
- server address [188.8.131.52]
- client address [192.168.1.5]
- Create a material sphere under the root of Optitrack Rigid Body Actor, under Optitrack input the Tracking ID. At the Motive, the tracking ID is from top to bottom (1 to 4).