TexVocab: Texture Vocabulary-conditioned Human Avatars
This addresses the challenge of generating realistic human avatars for applications like animation and virtual reality, representing an incremental improvement over existing methods.
The authors tackled the problem of creating animatable human avatars with detailed appearances from multi-view RGB videos by proposing TexVocab, a representation that constructs a texture vocabulary and associates poses with texture maps, resulting in outperforming state-of-the-art approaches.
To adequately utilize the available image evidence in multi-view video-based avatar modeling, we propose TexVocab, a novel avatar representation that constructs a texture vocabulary and associates body poses with texture maps for animation. Given multi-view RGB videos, our method initially back-projects all the available images in the training videos to the posed SMPL surface, producing texture maps in the SMPL UV domain. Then we construct pairs of human poses and texture maps to establish a texture vocabulary for encoding dynamic human appearances under various poses. Unlike the commonly used joint-wise manner, we further design a body-part-wise encoding strategy to learn the structural effects of the kinematic chain. Given a driving pose, we query the pose feature hierarchically by decomposing the pose vector into several body parts and interpolating the texture features for synthesizing fine-grained human dynamics. Overall, our method is able to create animatable human avatars with detailed and dynamic appearances from RGB videos, and the experiments show that our method outperforms state-of-the-art approaches. The project page can be found at https://texvocab.github.io/.