Even the greatest 3D animators struggle with mastering realistic facial animations. This is because the complex muscle system that controls numerous, subtle facial expressions is hard to capture using traditional 3D animation methods.
Methods like rigging and morphing are often time-consuming and inefficient. As a result, some animators have tried to use motion capture, also called mocap. Motion capture for facial animation uses a system of wires, cameras, and sensors to capture the motions of real people and transfer them onto a 3D character model.
Major, renowned 3D animated productions like Avatar and characters like Gollum from Lord of the Rings were created using motion capture technology. Furthermore, the technique has transformed computer animation, primarily by making it possible to transfer human emotions onto a 3D character. However, motion capture has its own set of challenges and is not suitable for every situation.
Why Isn’t Motion Capture The Best Choice?
There is a reason that major films have used motion capture in their animation process━they have huge budgets. To accomplish the highest quality, accurate video footage, it usually requires many cameras and an environment conducive to collecting motion data. The well-known 3D characters created by motion capture were made possible in a studio, fully equipped with hundreds of expensive, high resolution cameras.
The total setup and hardware costs can range from $200,000 to a million dollars. Animators can try to minimize the costs of motion capture by using cheaper and fewer cameras, however, the price is still high and the results can be lackluster.
Furthermore, motion capture may make it easier by automating the process of transferring video of human movements into a 3D animation. However, it does not mean the entire process is automated. In order to make the animation flow smoothly, it still requires skilled 3D animators to manually clean up the animation. For animators that want high quality 3D animations while minimizing the cost and work time, there is another option━Curve Controlled Modelling.
What is Curve Controlled Modeling?
Curve Controlled Modeling or CCM is a type of 3D animation that is completely software based, meaning that it doesn’t require the expensive hardware costs of motion capture. It uses a tool called NURBs or Non-uniform rational B-spline curve to simulate the movement of muscles, making it ideal for facial animation.
NURBs curves are equations that allow animation software programs to animate the muscles of a 3D object. This allows for astonishingly complex movements to be generated very quickly, which is crucial to successfully animate facial muscles.
With CCM, all you need is a software program, and the knowledge of how to use it. It is relatively easy to get both of these things, while it usually more difficult to obtain the tools to correctly use motion capture. With the complex and feature rich software that is available on the market for CCM animation, you’ll be able to animate complex facial muscles without spending an arm and a leg on hardware and studio space.