The body segment mass, Iocation of the center of mass, and moment of inertia on a dressed subject were estimated by a new geometrical method. To avoid the wrinkles in one's dress, thin belts were bandaged on the subject joints and principal parts. The band length were measured from video images taken from the frontal and the sagittal direction. The sizes of other parts were estimated from fitting a standard body model to each divided segment using shape transform method. The estimated mass was corrected to minimize the gap between the measured center of gravity and the synthesized one in 8 postures. The results of measuring 20 male subjects show that the errors of estimated volumes decrease by this correction, and that the present method has higher accuracy than the conventional geometrical measurement.