At present, most of the automatic rigging tools for 3D character models usually use template skeletons or widgets as the mainstream way of positioning skeletons. Both of them embed the rigging function according to the name of the standard. Although it can saves time to set position and name of the skeleton, It relatively reduces the flexibility of the embedded rigging function, which makes it inconvenient for users to modify the skeleton again after the character rigging is completed.

The main purposes of this study are: 1. To improve the problems that cannot be taken into account when using templates and widgets. 2. Understand the actual needs of users for automatic rigging. This research is carried out in two stages. In the first stage, we first take MAYA's Quick Rig as a case study to understand its features and functions, and design a set of automatic rigging tools accordingly, so that MAYA Quick Rig function can be used in the character rigging of character animation. Certainly. Written in MAYA Embedded Language, it is a set of tools that allows users to set the start and end points of the skeleton to embed rigging, hoping to solve the problem of re- rigging caused by changing the number of skeletons. In the second stage, in order to understand the use efficiency of the automatic rigging tool written in this research, three experts with more than ten years of work experience in the industry were invited to conduct a user experience survey as the basis for the development of the automatic rigging tool. Then, in the form of semi-structured interviews, let the experts share their experience and suggestions on the testing of automated rigging tools in this study. All three interviewed experts affirmed the capabilities of the automated rigging tools developed in this study.

This study found that user interface, instruction and teaching, and use functions are the three most important items for developing automated rigging tools. Taking the template skeleton function into consideration can improve the convenience and functional diversity of the tool itself, and help users to directly use this tool to make projects. Pattern skeletons are not required for automated rigging tools, but options are available to increase tool availability.