Cloth Pose Estimation Using Background Grid Elastic Constraints
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Solution Overview
Problem
Existing cloth simulation technologies face challenges in efficiently computing pose information due to complex topological structures of cloth vertices, leading to low real-time performance.
Innovation Solution
A method and apparatus that utilize a background grid obtained by uniformly dividing a two-dimensional plane to simulate cloth motion, simplifying the topological structure and enhancing computing efficiency by determining pose information through elastic energy functions and constraints.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If differential equations are solved using the topological structure of cloth vertices, then motion information of cloth vertices is obtained, but computing efficiency and real-time performance deteriorate due to complex topological structures
Solution Approach 1:
The method segments the cloth simulation problem into two parts: (1) solving differential equations on a simplified background grid to obtain grid vertex motion information, and (2) mapping this information to cloth vertices through the correspondence relationship. This segmentation allows the complex topological structure to be replaced with a simple grid structure for computation, while still obtaining accurate cloth pose information.
Solution Approach 2:
The background grid serves as an intermediary between the differential equation solver and the cloth model. Instead of directly solving equations on the complex cloth vertex topology, the method uses the background grid as a mediator to transfer and transform motion information, simplifying the computational process while maintaining accuracy through the established correspondence relationship.
2Manufacturing precision
If complex topological structures of cloth vertices are used to accurately represent cloth geometry, then simulation accuracy is improved, but real-time performance deteriorates
Solution Approach 1:
The method creates a copy of the cloth model in the form of a background grid, where grid vertices correspond to cloth vertices. This grid copy serves as a computational proxy that maintains the geometric representation accuracy while having a simple, regular topological structure that enables efficient real-time computation of motion information.
Data Source
AI summary
In a method, pose information of a cloth model is determined. A background grid is obtained based on uniformly dividing a two-dimensional plane that includes the cloth model. First motion information of each grid vertex indicating a motion state of each grid vertex at a first moment is acquired. An elastic energy function of the background grid indicating elasticity of the cloth model based on an elastic energy parameter is acquired. A target function indicating one or more constraints of the elastic energy function and the first motion information of each grid vertex is acquired. Second motion information of each grid vertex indicating a motion state of each grid vertex at a second moment later than the first moment is obtained based on the target function. First pose information of the cloth model is determined based on the second motion information of each grid vertex.