SPHERICAL REPRESENTATION OF A HUMAN-BODY FOR VISUALIZING MOVEMENT

A threedimensional human body model for displaying body movements on a computex graphics display is descrii. The surface of the body model is formed from overlapping spheres, yielding a realistidy formed and shaded body image on a raster graphics display. An experimental model consisting of 310 spheres is articulated with 19 joints and 20 body segments. The properties of this model indude joints which do not deform during movement, simple hidden surface removal, and efficient edlision and contact detection. The model may also be placed in a planar polygon emironment, displayed in shaded form, and tested for cdlisions with the environment. Ap plications in cnsh simulation and human movement simulation are indicated. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.