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Materialization of Motions

We propose a new method to learn and archive choreography through tangible 3D representation. Most people who want to enhance their dancing skills use movies or two-dimensional (2D) drawings. The merits of 3D fabricated choreography are as follows.

First, the dancing postures are tangible. Therefore, users can touch and confirm the position of the body parts such as hands and feet. Moreover, blind people cannot obtain any information about these positions through two-dimensional displays; therefore, they feel uncomfortable when learning dance because someone will need to physically move their body parts by touching them for them to understand the postures. However, if they use 3D tangible representations, then they can touch and grasp these positions of body parts.

Second, users have a 3D point of view of the dance postures, which enables them to see these dance postures from any point of view, which is not possible in case of 2D videos.

Finally, users can change the position of 3D object by direct hand manipulation. This can be useful for choreographers when considering choreography, formation, or structure.

In the case of dance, there are various kinds of movements that are complicated. Accordingly, we focus on the process that choreographers follow while choreographing a dance. It is common to choreograph a dance to the tempo of a music piece. Therefore, instead of analyzing the image or depth information itself, we analyze the tempo of the music piece and extract dance movements based on the relationship between the movements and the tempo.