Soft-Body Mesh Mapping for Low-Distortion Cloth Rendering
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Solution Overview
Problem
Conventional methods for rendering complex soft-body objects, such as multilayer clothes, suffer from poor rendering effects and distortion due to the limitations in mapping relationships between physical and graphic mesh models.
Innovation Solution
A method involving the use of different precision mesh models, where a first physical mesh model with lower precision is mapped to a first graphic mesh model with higher precision, establishing vertex-face and vertex-vertex relationships to generate model mapping information, which is then used to transform and render the soft-body object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional mapping relationship between physical mesh model and graphic mesh model is used, then the rendering process is simple, but the rendering effects are poor and there is rendering distortion
Solution Approach 1:
The patent segments the mesh model mapping process into two distinct types: vertex-to-face mapping for first-type mesh regions and vertex-to-vertex mapping for second-type mesh regions. This segmentation allows each region to use the most appropriate mapping method, improving overall rendering precision while managing complexity through structured classification.
Solution Approach 2:
The patent applies different mapping strategies to different regions of the mesh model based on their specific characteristics. First-type regions use vertex-to-face mapping while second-type regions use vertex-to-vertex mapping, ensuring that each local area receives the optimal mapping approach for its geometric complexity and topological properties.
2Manufacturing precision
If a high-precision graphic mesh model is used, then the rendering quality is improved, but the mapping relationship with the physical mesh model becomes more complex
Solution Approach 1:
The patent divides the graphic mesh model into first-type and second-type mesh regions, allowing high precision to be maintained in both regions while using different mapping approaches appropriate to each region's characteristics, thus managing the complexity of the mapping relationship.
Solution Approach 2:
The patent applies vertex-to-vertex mapping only to second-type mesh regions where it is most beneficial, rather than uniformly across the entire model. This partial application optimizes the balance between precision and computational complexity.
3Ease of operation
If a single mapping method is used for all mesh regions, then the processing is simpler, but the rendering distortion increases
Solution Approach 1:
The patent segments the mesh model into first-type and second-type regions, each processed with an appropriate mapping method. This segmentation maintains relative simplicity in the processing workflow while significantly reducing rendering distortion through region-specific optimization.
Solution Approach 2:
The patent applies different mapping qualities to different regions: vertex-to-face mapping for first-type regions and vertex-to-vertex mapping for second-type regions. This local differentiation eliminates rendering distortion in each region while keeping the overall process manageable through clear classification.
Data Source
AI summary
Soft-body object rendering techniques are described herein. The techniques may include obtaining a first physical mesh model and a first graphic mesh model of a soft-body object in a preset first form, precision of the first physical mesh model being less than precision of the first graphic mesh model; identifying a rendering vertex in a first-type mesh region of the first graphic mesh model as a first rendering vertex, determining a mapping face corresponding to the first rendering vertex from faces of the first physical mesh model, and determining relative location information between the first rendering vertex and the mapping face; identifying a rendering vertex in a second-type mesh region of the first graphic mesh model as a second rendering vertex, determining a mapping physical vertex corresponding to the second rendering vertex from physical vertexes in the first physical mesh model, and determining relative location information between the second rendering vertex and the corresponding mapping physical vertex, complexity of the second-type mesh region being higher than complexity of the first-type mesh region; generating, based on each piece of relative location information, model mapping information corresponding to the soft-body object; and transforming, when rendering the soft-body object, the first graphic mesh model based on the model mapping information and transformation of the first physical mesh model, and rendering the soft-body object by using a transformed first graphic mesh model.