To visualize dynamic 3-dimensional (3D) human motion data captured with optical motion analysis systerns, a Windows program that reads motion data in a comma-separated-values (CSV) format file, transforms the 3D coordinates datasets to joint angles, and writes the joint angle data as a BVH format file used in 3D applications such as Poser, has been developed. The Windows program was examined by using a test CSV format file that contains 3D motion data of human treadmill walking (300 frames). The treadmill walking was subsequently examined to be replicated from a generated BVH format file into a virtual 3D space of computer after an animation tool Poser imported its file. It was confirmed that the Window program itself works satisfactorily though abnormal rotations result in the Poser's automatic correction were seen in the virtual treadmill walking.
