How to choose motion capture equipment? Inertial motion capture or optical motion capture?

Motion capture equipment is used in 3D character animation and film and television production. The motion capture equipment records the movements of real actors, and then converts them into the movements of digital models to generate three-dimensional computer animations. The use of motion capture equipment can make animated characters move more realistically. .

Currently, the market is mainly divided into optical motion capture equipment and inertial motion capture equipment. What is the difference between the two?

Optical motion capture equipment requires wearing a tight-fitting suit with small balls hanging on the clothes. The small balls can emit light into the camera to record movement data. A marked point is captured by more than two cameras to measure the three-dimensional position of the marked point. , the accuracy depends on the camera parameters, quantity, and capture area. This type of motion capture equipment has high accuracy, but it requires a long time to build a motion capture studio and covers a large area. Better optical motion capture equipment requires hundreds of thousands to hundreds of thousands. Level 10,000.

The other is inertial motion capture equipment, which mainly records data through gyroscopes worn by real actors. It can measure steering, motion acceleration and position changes. Inertial motion capture equipment does not need to build a camera for motion capture. For example, Guangzhou Virtual Power's inertial motion capture device vdsuit full has 27 sensor nodes in the whole body. The entire set of motion capture device nodes covers important nodes of the real person's body, and the various transformations of the joint points are captured through the sensors. After self-developed by Guangzhou Virtual Power Algorithm, real-time analysis and conversion into human movement data. Compared with optical motion capture equipment, inertial motion capture equipment has a short wearing time, is easy to use, has a small footprint, can be adapted to many environments, and is relatively cost-effective.

Moreover, in addition to body capture, the inertial motion capture device vdsuit full also captures finger joints in fine detail. Unlike optical motion capture devices, which mostly only capture the body, finger capture requires the purchase of a separate glove system. Therefore, inertial motion capture equipment will be relatively convenient and normal for users who need daily capture.

Guangzhou virtual power motion capture equipment vdsuit full comes with its own motion capture system vdmocap and C++, UE, Unity, metahuman, Blender, iClone and other engines or 3D software plug-ins. The motion capture device vdsuit full is based on inertial motion capture technology and has millimeter-level positioning accuracy. It can obtain three-dimensional motion trajectories, positions, postures and other data in real time, which can meet users' various application scenarios.

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