3D Garment Roll-Up Simulation With Vertex-Based Fold Control
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Solution Overview
Problem
Existing computer-based clothing simulation technologies struggle to accurately represent the roll-up of fabric portions, such as rolling up sleeves or folding up hems, due to the flexible nature of fabric and variations in physical properties like strength and stretch, leading to issues like uneven folding and penetration.
Innovation Solution
A method and device for simulating roll-up in three-dimensional clothing by determining a base plane, classifying vertices into fold regions, and transforming them to reflect the roll-up, using a buffer region to maintain mesh integrity and prevent twisting or penetration, and simulating the 3D clothes with a coarse mesh for non-folded regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If computer-based clothing simulation technology is used to represent fabric roll-up, then the simulation can capture fabric flexibility and physical properties, but the representation of roll-up (such as rolling sleeves or folding hems) becomes inaccurate due to uneven folding and penetration issues
Solution Approach 1:
The fabric surface is divided into multiple triangular meshes that can be independently transformed. By segmenting the fabric into discrete mesh elements, the simulation can apply different transformation operations to each mesh, enabling accurate representation of roll-up folds while maintaining overall fabric continuity and preventing penetration artifacts.
Solution Approach 2:
The patent transforms 2D fabric patterns into 3D rolled-up structures by applying dimensional transformation operations. The roll-up process converts flat 2D mesh surfaces into 3D cylindrical or curved structures, accurately representing how fabric transitions from a planar state to a rolled configuration without distortion or penetration.
2Manufacturing precision
If detailed mesh is used for all regions to accurately simulate roll-up, then folding accuracy improves, but operational complexity and computational load increase significantly
Solution Approach 1:
The patent applies different mesh densities and transformation operations to different regions of the fabric. Areas undergoing roll-up receive detailed mesh processing and specific transformation operations, while non-folded regions maintain coarser mesh structures. This localized approach ensures folding accuracy where needed while minimizing overall computational complexity.
Solution Approach 2:
Instead of applying complex roll-up transformation operations to the entire fabric surface, the patent selectively applies these operations only to the specific regions that will be rolled or folded. This partial action approach maintains high folding accuracy in target areas while reducing operational complexity in non-target areas.
3Ease of operation
If uniform mesh transformation is applied to represent roll-up, then the process is simple to implement, but the result shows twisting and penetration artifacts that reduce simulation quality
Solution Approach 1:
The patent employs dynamic transformation operations that adapt to the local geometry and orientation of each mesh element during the roll-up process. Rather than applying a static uniform transformation, the system dynamically calculates appropriate transformations for each mesh based on its position and orientation, preventing twisting and penetration while maintaining implementation feasibility through automated calculation.
Solution Approach 2:
The transformation parameters are adjusted based on the local characteristics of each mesh element and its distance from the roll-up axis. By changing transformation parameters (such as rotation angles and scaling factors) according to spatial position, the system achieves accurate roll-up representation without uniform transformation artifacts, while the parameter changes are systematically determined rather than manually specified.
Data Source
AI summary
A roll-up simulation method and device according to an embodiment determine a base plane corresponding to a target portion of roll-up in three-dimensional (3D) clothes, determine, on the basis of the base plane, target vertices, affected by the roll-up, among vertices corresponding to the target portion, and transform the target vertices into vertices in which the roll-up is reflected, thereby simulating the 3D clothes in which the roll-up is expressed.