Relative movement based motion recognition method and apparatus

摘要

Disclosed are a method of recognizing a motion based on a relative movement and an apparatus thereof. According to the present invention, the method of recognizing a motion based on a relative movement comprises the following steps of: (a) obtaining, from a plurality of sensors attached to a plurality of body parts, a first rotation value according to a movement to a second posture from a first posture, wherein the first rotation value is obtained by rotation based on a global coordinate system; (b) calculating a first rotation change amount to the first posture and the second posture from the first rotation value; (c) converting the first rotation value into a second rotation value based on a world coordinate system of software for modeling by using the first rotation change amount and a conversion matrix; (d) calculating a second rotation change amount of each of modeling body parts used in the software by using a rotation value of each of the modeling body parts and a rotation value of an upper body part of each of the body parts; (e) obtaining a third rotation value of each of the modeling body parts based on the world coordinate system of the software by using the second rotation change amount; and (f) converting the rotation value obtained from the sensors into a rotation value applied to the modeling body parts by using the second rotation value and the third rotation value.