Patent ID: 11954779
Assignee: DIGITAL DOMAIN ENTERPRISES GROUP LIMITED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. An animation generation method for tracking a facial expression, comprising:
repeatedly applying a plurality of expression parameter sets to a first 3D role model and rendering the first 3D role model to which different expression parameter sets are applied, by a 3D engine, to obtain a plurality of first virtual expression images presenting different facial expressions of the first 3D role model;
training a tracking neural network according to the expression parameter sets, which respectively corresponds to different facial expressions of the first 3D role model, and the corresponding first virtual expression images presenting different facial expressions of the first 3D role model;
applying a virtual facial image of the first 3D role model to a target facial image of a tracked object to generate a second virtual expression image presenting the first 3D role model having the same facial expression as the target facial image;
inputting the second virtual expression image to the trained tracking neural network to obtain a predicted expression parameter set; and
applying the predicted expression parameter set to a second 3D role model, by the 3D engine, so that the second 3D role model presents an expression similar to the second virtual expression image.