In recent years, with the rapid development of computer image processing technology, the audience’s aesthetic ability for digital media works of art has been significantly improved. Works based on 3D animation technology have gradually become the mainstream in the animation industry, and become one of the hot research directions for animation practitioners. 3D animation is a kind of art to express the movement of objects in a three-dimensional way. One of its characteristics is to express the movement of objects in a more realistic and efficient way. Key frame refers to the frame in which the key action of a character or object moves or changes. It is the decisive element of a complete set of actions. The quality of key frame directly determines the performance and reliability of actions. Competitive sports, that is, “competitive sports activities.”. Competitive movement has a strong sense of rhythm and appreciation, which is suitable for the research of key frame technology.
This topic takes the key frame design of Taekwondo competitive action in 3D animation as the research object, and adopts the research method referring to the real competitive action. First of all, by referring to professional books and consulting a large number of literature, the key frame technology related concepts and technical difficulties are clarified, and the key frame production process specification is summarized； secondly, combining Maya key frame technology with the real Taekwondo competition reference video, the 3D animation short film with smooth rhythm and realistic action is finally produced to verify the performance of 3D animation technology in the competition Movement feasibility..
Keywords：key frame technology； competitive action； animation production