Calligraphy by brush has a long history and tradition in Japanese culture. The calligraphy is not only drawing aesthetic expressions of letters but also mental activity. And there are many peoples in the world who are interested in writing brush. For the Japanese calligraphy, ink stone (called in Japanese as "Suzuri"), brush("Fude"), special paper("Hanshi"), and ink("Sumi") are the minimum tools required. In addition, it is necessary to have a permissive environment to dirt and smell caused by ink. It is difficult to align them completely. As a solution to the problem, there is a method of virtually performing a brush on a computer. In this research, we develop a system that implements virtual brush writing on a computer aimed to fun the calligraphy easily, without losing the real brush writing techniques. In this system, using Leap Motion[1], a display and a virtual rod which becomes a writing instrument, we can write something very similar to the handwriting of the actual writing brush. According to results of the questionnaire, it was found that a high evaluation can be obtained from many people with respect to the texture of the handwriting.
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