3D Character Motion Generation Technology Based on Biomechanical Joint Data and Rotation Constraints

3D Character Motion Generation Technology Incorporating Biomechanical Joint Data and Rotation Constraints

This technology generates 3D character motions by creating a biomechanical context vector—which includes allowable rotation ranges for each joint—from text condition vectors and skeleton structure information, and then applying this to a diffusion-based motion generation model to produce joint-specific rotation sequences.

When generating 3D character motions using AI, issues often arise where joints bend or twist beyond the natural range of human motion, resulting in biomechanically unnatural movements.

By adjusting scale and shift using the biomechanical context vector and replacing or correcting values that exceed allowable rotation ranges with minimum and maximum rotation angles for each axis, this technology enables the generation of biomechanically natural motions for 3D character animation.

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Key Features:

• Generating text condition vectors and acquiring skeleton configuration parameters by inputting text prompts into a text encoder.
• Generating a biomechanical context vector that includes allowable rotation ranges, joint types, and bone lengths for each joint by inputting skeleton structure information into a biomechanical encoder.
• Generating joint-specific rotation sequences by inputting the text condition vector and the biomechanical context vector into a diffusion-based motion generation model.
• Correcting rotation sequences by replacing any joint rotation values that exceed the allowable range with the minimum or maximum rotation angle for that specific axis.

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This patent portfolio consists of four family patents covering AI-based 3D motion generation technology developed by Bumblebee Co., Ltd. Technology transfer is available alongside the patents, and the sale price is negotiable. Please refer to the attached technical manual for detailed information.

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