A new PC-based method of overlaying live stereo video sequences on com
puter graphics is presented. Since the underlying computer graphics ca
n also be stereo, stereo elements like a 3D-cursor can be mixed to the
live video. For flicker reduction, video field rates can be doubled.
The full spatial resolution of 576 lines is used for both channels. In
addition, interpolated line doubling serves for quality enhancement a
nd line-structure suppression. Beside the overlaying of one stereo ima
ge, it is also possible to overlay two independent mono video images a
t the same time. Some medical and industrial applications are describe
d.