Creating a digital human using AI involves several steps and technologies, including 3D modeling, animation, and artificial intelligence (AI) for bringing the digital human to life、Here's a simplified guide to creating a basic digital human:

1、Concept and Planning

Define Purpose: Determine the digital human's purpose、Is it for a video game, animation, virtual reality (VR) experience, or perhaps a digital influencer?
Design: Sketch out the character's appearance, including facial features, body type, clothing, and any distinctive attributes.

2、3D Modeling

Software: Use 3D modeling software like Blender, Maya, or 3ds Max to create the digital human's model、There are also online platforms and AI tools (like Daz 3D, Character Creator 3) that can help generate 3D characters.
Detailing: Add details such as textures, clothes, and accessories、High detail can make the character more realistic.

3、Rigging

Rigging Software: Tools like Blender, Maya, or 3ds Max can be used for rigging、Rigging is the process of creating a skeleton (rig) for the 3D model, which allows it to be animated.
Skinning: This process involves attaching the 3D model's mesh to the skeleton so it can move naturally.

4、Animation

Keyframe Animation or Motion Capture:
Keyframe Animation: Manually animate the character by setting keyframes that define the movement.
Motion Capture: Use realworld movements recorded from actors to animate the character、Software and hardware solutions exist for this, like Vicon or OptiTrack systems.

5、AI for Animation and Interaction

Deep Learningbased Animation: Tools like DeepFaceLab or DALLE can generate facial expressions and animations based on input images or text.
AIpowered Animation Tools: Some AI tools allow you to animate characters using text prompts or simple keyframe animations.

6、Voice and Speech

TexttoSpeech (TTS) Software: Implement a voice for your digital human using TTS software like Google's TexttoSpeech or Amazon Polly、These can generate speech based on text input.
Lip Syncing: Use software or AI tools that can automatically sync the digital human's mouth movements with the generated speech.

7、Integration and Rendering

Game Engines or Realtime Rendering Software: Platforms like Unity, Unreal Engine, or Blender can be used to integrate the 3D model, animations, and AI behaviors、These engines support rendering, physics, and interaction with the environment.
VR or AR Integration: If the digital human is for VR or AR, integrate it with platforms like Unity or Unreal Engine for immersive experiences.

8、AI for Behavior and Interaction

Behavior Trees or State Machines: Implement AI behaviors that allow the digital human to interact with users or environments、This can range from simple reactions to complex conversations using NLP (Natural Language Processing).

Tools and Technologies

AI Video Creation Tools: Lumen5, Wibbitz for creating animated videos.
Digital Humans Platforms: Platforms like MetaHuman, D2U (Digital to Universe), and others provide tools and premade characters.
Machine Learning Models: Use pretrained models for generating expressions, gestures, or speech.

Challenges

Realism: Achieving realistic movements, expressions, and interactions.
Ethics and Consent: Especially when creating digital humans that resemble real individuals, ethical considerations are crucial.

Example of Creating a Simple Digital Human

Using AI Tools:

1、Concept and Design: Decide on the character's look and feel.
2、AI Character Generation Tools: Use tools like This Person Does Not Exist (for generating faces) or AIpowered 3D model generators.
3、Animation: Utilize AI for automating animations or generating 3D animations from 2D inputs.

Coding and Development:

Python Libraries: Utilize libraries like TensorFlow, PyTorch for machine learning tasks, or specific libraries for 3D rendering and animation.

Creating a digital human with AI involves a blend of artistic creativity and technical skills、The field is rapidly evolving, with new tools and technologies emerging that make the process more accessible.