Their Neuron suit comes with a network of straps that house the inertial sensors, known as ‘neurons.’ Full hand and finger tracking is part of the set-up for the 2.0 option. Perception Neuron also offers a full-body wireless motion-capture system using inertial measurement unit technology. We can also do multi-level motion capture, which is hard for most other inertial motion-capture systems.” “It is the only system that provides magnetic immunity to this level, because of the sophisticated sensor fusion algorithms which took us many years to develop. “The defining characteristic that sets our solution apart from others is the magnetic immunity,” says Beute. It has greater data collection capabilities and can also be used to capture multiple subjects at once. “MVN Awinda is the fully wireless version with wireless sensors built into it. “The MVN Link is a full-body, camera-less mocap suit that is connected to a wireless data link and used for high-dynamic movements, like fighting scenes and fast maneuvers,” explains Xsens product manager Hein Beute. MVN Link and MVN Awinda are Xsens’ main offerings, with the suits using 17 sensors embedded or wirelessly strapped to the body of the performer. Xsens offers suit, sensor/tracker and software solutions. Inertial, or magnetic, motion-capture systems use magnets, accelerometers and gyroscopes all within a contained cable system that tends to zip into some kind of lycra suit. We use them every day on productions ourselves under the most demanding conditions in the business.” “The head rigs have been continuously improved upon feature-wise for the last 13 years. “The original version of our head rigs was designed and manufactured during the production of Avatar, though at the time the camera was singular and standard definition,” describes Derry. The head rigs from Fox VFX Lab are designed and built in-house. “If everyone is wearing solid black the editor’s job is more difficult. “The mocap suits with the gray fabric and colors make it easy to pick out which actor you are looking at when using reference video to make performance selects,” says Derry. The shoes are Nike with mocap fabric sewed on. The Fox VFX Lab suits, gloves and marker patches are made by 3 x 3, with the markers themselves from MoCap Solutions. They’ve made significant innovations in virtual cameras and simul-cams, something Technoprops founder Glenn Derry (now team leader, Fox VFX Lab and VP, Visual Effects, at Fox Feature Films) helped pioneer on Avatar. Our popular X-base markers adhere much better to the new suits, making them nearly impossible to knock off during performance capture, and it allows the performers and the mocap technicians to focus on the performance rather than the tech.”Īlso providing optical systems is Fox VFX Lab, which was formerly Technoprops. “They are now antimicrobial and more breathable than before, offering a better fit and more flexibility, which provides performers with exceptional freedom of movement and comfort over long recording sessions. “The new suits were designed to do what the older suits do – only better,” says OptiTrack chief strategy officer Brian Nilles. Meanwhile, Optitrack also offers a full range of motion-capture and tracking solutions, including a new suit. They can vary in sizes and are small enough to go on fingers.” “The reflective markers are essentially a molded base covered in reflective scotch tape. “The suit has been designed to be comfy to wear, capable of dealing with stunt work and covered in Velcro so we can attach markers to it,” outlines Vicon VFX product manager Tim Doubleday. Vicon motion-capture suits include a hat, gloves, overshoes and markers that can be glued or taped onto the suits – there are facial markers, too. Each camera sees the marker from a 2D perspective and when all of the 2D files are reconstructed together, a 3D marker in space can be calculated. ‘Active’ systems allow cameras to sync up to strobing markers on the suits. In optical motion capture, infrared cameras pick up the light reflected back from retro reflective markers on the suits (in a ‘passive’ system). VFX Voice asked several mocap vendors and visual effects studios about their various suit and head-cam offerings. Among those are many different motion-capture suits – ranging from optical to inertial systems, as well as ‘faux mocap’ tracking suits – and facial-capture set ups. If you’re looking to bring to life a CG human, character or creature with the aid of any kind of performance capture, there’s now a bevy of options at your disposal.
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