Jieun Lee  Taehwan Kwon  Youngho Chai

10.5626/JOK.2021.48.4.453

3D animation human motion authoring Key-frame animation Motion Capture motion modification

Research that creates natural human movement in the motion work of 3D animation is progressing in various fields with the development of technology. For more natural and realistic animation, numerous animators have worked directly on the Key-frame or received motion capture to author the motion. However, since the process of making several keys per second or measuring the motion with a sensor is an inefficient process despite simple motion authoring and modification, it is necessary to solve the problems for simple motion modification. In this study, we have analyzed the existing motion authoring method, Key-frame animation, and motion capture. Also, we propose a new motion authoring method that complements the disadvantages of the existing method. The human movement is recorded through the joint - sphere attached to each joint of 3D character and the recorded pattern and motion are revised. As the motion is modified through trajectory modification, the rotation angle and joints of each part of the model do not need to be adjusted one by one. Apparently, there is an increase in convenience along with the reduction in the working time compared to the existing motion authoring system.