Obviously it is paramount that the 3D characters can move around in the 3D landscape. This is complicated by the fact that the landscape, the foreground and the characters are typically created in different software packages and have to be brought together in some way. There are many ways to do this, and this experiment shows one of those.

A standard Poser character (Kate again) is animated in Poser and imported into a very simple scene in Vue, where she is made to run in and out between the small trees. The whole thing is then rendered in Vue.

As you can see, The animation is somewhat wanting. The character never touches the ground, and her feet seems to slide around in the air. Also her running motion is lacking credibility. There are nice touches, however. For instance, see how the leaves cast shadows on her while she runs.