liikemallintaminen

Liikemallintaminen, known in English as motion capture or mo-cap, is a technique used to record the movement of objects or people. It is often used in filmmaking, video games, and sports science. The process involves outfitting subjects with special markers that are tracked by specialized cameras. These cameras capture the position and orientation of the markers in three-dimensional space. This data is then translated into digital animation.

There are several types of motion capture technology. Optical motion capture is the most common, using either passive or active markers. Passive markers are reflective and illuminated by external light sources, while active markers emit their own light. Inertial motion capture uses sensors attached to the body that measure acceleration and rotation, eliminating the need for external cameras. Magnetic motion capture uses magnetic fields to track the position of sensors.

In filmmaking, motion capture allows for realistic animation of characters, especially non-human ones or actors performing complex stunts. It has been instrumental in creating characters like Gollum in "The Lord of the Rings" trilogy and Thanos in the Marvel Cinematic Universe. In video games, it enhances the realism of character movements and animations, leading to more immersive gameplay. Sports scientists use motion capture to analyze athletic performance, identify biomechanical inefficiencies, and prevent injuries. The data can reveal subtle details about a person's gait, posture, and movement patterns.