Surface deformation using the sensor glove
Lizhuang Ma, Rynson W. H. Lau, Jieqing Feng, Qunsheng Peng, Janis P. Y. Wong · 1997
Intuitive 30 sulfate control and deformation are czucial to CAD/CAM.To do this in a virtual environment, however, the tecZznique must be very efficient.A common method for shape deformation is the free-form deformation (FFD) method, in which the complete object is deformed by defozming a 30 grid of the object.In this paper, we propose an intuitive method for sulfate deformation based on deforming a hand s&ace, which is basically a bicubic B-spline sudace interpolating or approximating key data points of a sensor glove (i.e.finger joints and palm center of the user's hand).By setting up a corresponding mapping between the virtual object being deformed and the hand sugace, the object can be deformed with tlze control of the sensor glove.As the usersexes hislherfingers, the object changes its shape accordingly.Such control can be local or global.For local deformation, we introduce a region jilter function which imposes locality on the mapping/deformation.The new algorithm is made very efficient tlzrough incremental update.It is also intuitive as zfthe zzser were using his hand to deform the object directly.Experimental results show the potential of the new method.