  DuctTake is a system designed to enable practical compositing of multiple
takes of a scene into a single video. Current industry solutions are based
around object segmentation, a hard problem that requires extensive manual input
and cleanup, making compositing an expensive part of the film-making process.
Our method instead composites shots together by finding optimal spatiotemporal
seams using motion-compensated 3D graph cuts through the video volume. We
describe in detail the required components, decisions, and new techniques that
together make a usable, interactive tool for compositing HD video, paying
special attention to running time and performance of each section. We validate
our approach by presenting a wide variety of examples and by comparing result
quality and creation time to composites made by professional artists using
current state-of-the-art tools.
