Recovering photorealistic and drivable full-body avatars is crucial for numerous applications, including virtual reality, 3D games, and tele-presence. Most methods, whether reconstruction or generation, require large numbers of human motion sequences and corresponding textured meshes. To easily learn a drivable avatar, a reasonable parametric body model with unified topology is paramount. However, existing human body datasets either have images or textured models and lack parametric models which fit clothes well. We propose a new parametric model SMPLX-Lite-D, which can fit detailed geometry of the scanned mesh while maintaining stable geometry in the face, hand and foot regions. We present SMPLX-Lite dataset, the most comprehensive clothing avatar dataset with multi-view RGB sequences, keypoints annotations, textured scanned meshes, and textured SMPLX-Lite-D models. With the SMPLX-Lite dataset, we train a conditional variational autoencoder model that takes human pose and facial keypoints as input, and generates a photorealistic drivable human avatar.

提出了一种新的参数化模型SMPLX-Lite-D，可以适应扫描网格的详细几何结构，同时保持脸部、手部和脚部区域的稳定几何结构。利用SMPLX-Lite数据集，训练了一个条件变分自编码器模型，以人体姿势和面部关键点作为输入，生成逼真的可驾驶人体化身。

SMPLX-Lite：带有丰富几何和纹理注释的逼真驾驶化身基准