Abstract. This paper proposes a new user interface paradigm for motion capture based animation systems, providing intuitive and efficient ways to visualize the main motion capture concepts and operations. A prototype system was built, implementing the prop

Figure15:Blendingwindowwithtime-markers(indetail).

CameraControls

Oursystemprovidesseveraltoolsforcameracontrol.InFigure16,wepresenttheCameraControlWindow,withsomeoptionsthatallowaprecisecontrolofvariouscamerasettings.

Amongtheseoptions,probablythemostusefulonesare:thefollowmode-whichguidesautomaticallythecamerathroughoutthescene,followingtherootjointthatdrivestheskeletonhierarchy;thelockjointmode-whichpointsthecameratargettotheactivejoint,selectedintheskeletongraphwindow;andthecirclecameraoption,whichallowsaninteractivecircularmovementofthecameraovertheactivejoint,whiletheanimationisbeingplayed.

Moreover,thesecameraoptionscanbemixed,thusgivingayetmoreprecisecontrolofthecameramotion.

Additionalcontrolsforscenelightingarealsoprovidedwiththe

system.Figure16:Cameracontrols.Fromtoptobottom:Zoomin,Zoomout,Followmode,LockJointmode,Circlecamera