3D-Virtual-Avatar

This repository includes some of my works done in 3D Virtual Avatar Reconstruction field

Full Human Body Reconstruction and Animation using single image/Video :

• Used PIXIE along with DECA to reconstruct complete 3D body model with detailed facial texture and pre-assigned body texture.

• Used the Pose,Shape and Expression parameters generated for video clips to retarget full body animation along with facial expressions.

• Wrote Blender script using bpy python package to achieve a complete automated way for generating full body animation in AR/VR suitable file format like .FBX/.GLB

Refernces :

• https://github.com/yfeng95/PIXIE
• https://github.com/yfeng95/DECA

3D Face Reconstruction using single image :

• Used DECA model to reconstruct 3D face with detailed textures and normals for wrinkles,poses and expressions.

• Used the Pose,Shape and Expression parameters generated for video clips to retarget facial expressions.

• Tried Spectre and EMOCA models to improve the facial expressiveness

• Wrote Blender script using bpy python package to achieve a complete automated way for facial animation in AR/VR suitable file format like .FBX/.GLB

Refernces

• https://github.com/yfeng95/DECA
• https://github.com/radekd91/emoca
• https://github.com/filby89/spectre

Rigged 3D Avatar Generation:

• Used the 3D reconstructed face upto the neck like FLAME head model.

• Generated Blendshapes using Nvidia Omniverse Audio2Face for the 3D face model.

• Wrote Blender script using bpy python package to join and merge (with threshold) the 3D head model with blendshapes and the correctly rigged lower body in clothing. Then,Exported AR/VR ready to use 3D Avatar in .FBX/.GLB format.

References

• https://github.com/TimoBolkart/TF_FLAME
• https://github.com/Rubikplayer/flame-fitting
• https://www.nvidia.com/en-us/omniverse/apps/audio2face/

Audio Driven 3D Facial Animation:

• Tried VOCA model to generate 3D vertices displacement based facial animation for FLAME head model.

• Tried FaceFormer model to generate 3D vertices displacement based facial animation for FLAME head model. Also tried to train it on facial blendshapes data by customizing the whole pipeline.

• Trained Viseme based 3D facial animation model on blendshapes data and tested via maya python scripting

• Explored the Nvidia Omniverse Audio2Face for generating blendshapes for custom head model using Character Transfer Pipeline and tried the speech to facial speaking animation

References

• https://github.com/TimoBolkart/voca
• https://github.com/EvelynFan/FaceFormer
• https://www.nvidia.com/en-us/omniverse/apps/audio2face/

Generating Automatic Skinning Weight:

• Used Neural Blend Shapes for automatic skinning weight generation for T-Pose humanoid character based on SMPL rigging system.

• Tried the provided blender script for generating smooth animation

References

• https://github.com/PeizhuoLi/neural-blend-shapes

Real-time 3D Character Animation

• Tried ROMP model to generate 3D SMPL joints in real-time and feed into blender running on different port to experience real-time humanoid character animation.

References

• https://github.com/Arthur151/ROMP