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We address the problem of using hand-drawn sketches to create exaggerateddeformations to faces in videos, such as enlarging the shape or modifying theposition of eyes or mouth. This task is formulated as a 3D face modelreconstruction and deformation problem. We first recover the facial identityand expressions from the video by fitting a face morphable model for eachframe. At the same time, user's editing intention is recognized from inputsketches as a set of facial modifications. Then a novel identity deformationalgorithm is proposed to transfer these facial deformations from 2D space tothe 3D facial identity directly while preserving the facial expressions. Afteran optional stage for further refining the 3D face model, these changes arepropagated to the whole video with the modified identity. Both the user studyand experimental results demonstrate that our sketching framework can helpusers effectively edit facial identities in videos, while high consistency andfidelity are ensured at the same time.

Cartoonish sketch-based face editing in videos using identity deformation transfer