sentences:  It involved the first 3D laser vibration scanning of Stradivari and Guarneri violins, (the 'Titian' and 'Willemotte' Stradivaris, and the 'Plowden' Guarneri 'del Gesu') and included acoustic testing and CT scanning.Zygmuntowicz turned the endeavor into a broad collaborative project, bringing together makers, musicians, filmmakers, acoustical engineers, and other researchers - among them physicist and co-developer George Bissinger, who had pioneered the use of vibration scanning using lasers.According to Zygmuntowicz, "The instruments were gently activated by tapping the bridge, and then three scanning lasers detected the resulting patterns of vibration, which were revealed on screen as a rippling landscape of colour and motion, rather like a motion-capture animated film."