Thomas Hardy explains how DNEG Animation used Ziva on The Garfield Movie.
All the characters in The Garfield Movie had a large variety of designs and volumes. There were small, round characters like Garfield and large characters with huge volumes, such as Vic and Roland. It was clear from the off that it would be a challenge handling the range of designs. Our goal was to provide animation with a fast rig that had high degrees of volume preservation as well as overall deformation.
Ziva RT is a machine learning tool that outputs a geometry deformer that runs in real-time. Using the full Ziva package, we set up dynamic simulation rigs and generated huge caches to feed into the trainer. The simulation would run thousands of frames, performing a series of technical poses on each joint and combinations of joints. The Ziva RT trainer ingested a stripped-down closed chain rig, along with the animation and sim caches to produce the final output.
We started by animating the individual joints like the elbows and wrists across the whole chain, then moved on to combinations of joints. The idea was to provide a dataset that encapsulated as much variety as possible. Once we had our first passes, we evaluated the results, identified any weaknesses, and added extra poses to the training to improve the results.Next we created sim meshes and set up the Ziva simulation.
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