In recent years, the number of Hi-vision digital imaging requirements by TV program directors for novel and attractive productions has been increasing. One of the biggest issues to meet these desires is a development of Hi-vision virtual studio sets. With a good combination of our own original computer graphics techniques and a commercial virtual set system, we have just completed a big challenge to a digital imaging production for a NHK's entertainment Hi-vision program. In this paper, we describe an outline of the digital imaging production.