Bézier spline fitting approach for rotational animation encoding in MPEG 4 part 25

Object-based video representation and coding promises to keep the largest amount of scene information during video transmission and processing for animated video. We propose a new codec for rotational animation in MPEG 4 Part 25, that is more connected to the input format and can therefore avoid drawbacks of the current implementation. The codec uses Bézier spline fitting to approximate the animation curves. With that approach a mean data-rate saving of over 60% is achieved.