“Wobble Strings: Spatially Divided Stroboscopic Effect for Augmenting Wobbly Motion of Stringed Instruments” by Fukushima and Naemura

  • ©Shogo Fukushima and Takeshi Naemura

Title:


    Wobble Strings: Spatially Divided Stroboscopic Effect for Augmenting Wobbly Motion of Stringed Instruments

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Entry Number: 26


Description:


    When we snap strings playing with a CMOS camera, the strings seems to vibrate in a wobbly slow motion pattern. Because a CMOS sensor scans one line of video in sequence, fast moving objects are distorted during the scanning sequence. The morphing and distorting are called a rolling shutter effect, which is considered to be an artistic photographic techniques like strip photography and slitscan photography. However, the effect can only be seen on a camera finder or a PC screen; the guitar player and audience are quite unlikely to notice it by the naked eye.

    To cope with this limitation, we developed Wobble Strings, a system that allows for the rolling shutter effect to be observed by naked-eye in real time using spatially divided stroboscopic projection. The system can produce wobbly slow motion effect in real time by generating the animation of sweep lines using a projector in accordance with the pitch of strings. Furthermore, our system can also alter the color and texture of strings using a projection of the color and texture sweep lines. Thanks to our system, the guitar player can monitor the strings’ oscillation and, the audience can experience an artistic visual effect with the guitar sound.

References:


    FUKAYA, T., IWAI, T., AND YAMANOUCHI, Y. 2006. Morphovision. In ACM SIGGRAPH 2006 Emerging Technologies, ACM, New York, NY, USA, SIGGRAPH ’06.


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©Shogo Fukushima and Takeshi Naemura ©Shogo Fukushima and Takeshi Naemura ©Shogo Fukushima and Takeshi Naemura

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