The motion data is transmitted wirelessly to a nearby device. ![]() Instead, inertial sensors (IMUs) are placed within a bodysuit and worn by the actor. Unlike the other types, Inertial requires no cameras to capture the motion. Inertial (Cameraless): Motion sensor suit It captures the scene from every angle, reducing the need for retakes. However, the end result takes more time and includes more errors than other methods, meaning that a lot of data cleanup is needed in post-production. This type of motion capture is useful for large-scale productions that have post-production budgets. Instead, the acting area is covered by a grid on the floor and a network of cameras that shoot the scene from every possible angle. The recorded footage is analyzed by software and translated into motion data that animation software can read. Video (Markerless): A sophisticated camera stage is usedĪctors do not use suit markers of any kind. This isn’t used often anymore as the actors also need to carry some kind of charger or battery case, and the LED light can potentially spill into other filmed elements. Light-emitting LED markets are placed on actors the same way as optical-passive tracking, and special cameras record their movement. Optical-Active: LED suit markers & cameras However, it can be resource-hungry and isn’t suitable to run on entry-level systems. Historically, this was the most common way of doing motion capture. Large studios commonly use this type as it's the most accurate, yielding the impressive photorealistic tracking required for feature films. Retroreflective markers are placed on actors via a tight-fitting suit and tracked via infrared cameras. Optical-Passive: Retroreflective suit markers & infrared cameras What to consider when starting a motion capture project?įirst, you need to be aware of the four main types of motion capture, what they mean, and how to choose one that best fits your project needs. In the military, mocap is used to create advanced simulations and improve training programs.It’s been used to do everything from optimizing an athlete’s tennis swing to injury diagnosis and rehabilitation. The health and sports industry is a big user of motion capture technology.And that’s what mocap helps animators achieve. Humanoid fantasy characters need to move realistically to avoid the uncanny valley effect.In complex scenes, directors will often use mocap to block out the motions of the scene and more accurately prepare for shooting and VFX. It’s when the creators bring the static storyboard to life. ![]() Previs (also known as previsualization) happens during pre-production.Game animations use mocap to quickly build up a vast library of motions for each game character. ![]() Motion capture can be used for many types of projects, not just VFX. What applications are suitable for motion capture? It’s now possible to record movement from popular domestic animals such as dogs and horses. Keep reading until the end of the article to see a video of what that looked like in practice.įrom then on, mocap has become an almost mandatory feature in major films requiring VFX. In the late 2010’s motion capture evolved from tracking humans to tracking animals. The animated character interacted realistically with his live-action co-stars by relying on the mocap technique developed by Weta studios. In the next few years, it was quickly popularized by the then-revolutionary animated character Gollum in The Lord of the Rings. Motion capture was first used in the film Sinbad: Beyond the Veil of Mists (2000). The rise of motion capture as a Hollywood must-have It’s a similar technology that is used in Rokoko’s facial mocap app for iOS, which allows 3D artists to capture facial motions as blendshapes to apply them on their custom characters in their 3D animation projects. For example, Instagram filters use a type of mocap to track your face in real-time and apply simple animation overlays. With evolving technology, you can even use your cellphone to do basic motion capture. Motion capture records movement and translates it into data that can be read by animation software and applied to a 3D rig or character. It's a common misconception that motion capture projects need a big budget and an entire production team. Physical mocap suits, specialty cameras, and advanced software are used to create photorealistic animations that can be used in film, sports, and even healthcare. Motion capture (mocap) technology is used to record movements and apply them to a 3D model.
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