Elastic Mesh Position Determination for 3D Model Shape Accuracy

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Solution Overview

Problem

Current methods for determining the positions of mesh points in 3D models for elastic effects in computer technologies result in significant deviations, affecting the accuracy of inflation and deflation effects, leading to discrepancies between the initial and final shapes of the 3D model.

Innovation Solution

A position determination method and device that construct a mesh model of an elastic object, determine deformation information based on pressure differences, and adjust motion trajectories using elastic constraints to ensure accurate prediction and maintenance of mesh point positions, thereby improving the accuracy of mesh point positions and maintaining the shape of the 3D model during elastic motion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If the positions of mesh points in a next video frame are predicted solely based on the motion information of the mesh points, then the calculation process is simple, but the predicted positions exhibit significant deviation, resulting in a significant difference between the shape of the 3D model after stretching or contracting and the initial shape

Engineering Contradiction:

Improveposition prediction accuracyVSAvoidcalculation complexity

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent segments the position prediction process into two distinct stages: first predicting positions based on motion information, then adjusting these predictions based on deformation information. This segmentation allows each stage to focus on specific aspects of the problem, improving overall accuracy without requiring complete recalculation

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary position prediction using motion information before applying deformation adjustments. This preliminary action establishes a baseline that captures the majority of position changes, allowing subsequent deformation-based adjustments to focus only on correcting residual errors rather than calculating positions from scratch

Inventive Principle:

Principle #10Preliminary action

2Productivity

If the positions of mesh points are predicted based on motion information, then the computation is efficient, but the shape of the 3D model after deformation differs significantly from the initial shape, affecting the inflation and deflation effect

Engineering Contradiction:

Improveposition prediction efficiencyVSAvoidshape preservation accuracy

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

The patent implements a feedback mechanism where deformation information (including deformation positions and pressure difference actions) is used to adjust and correct the preliminary position predictions. This feedback loop ensures that the final positions maintain both the efficiency of motion-based prediction and the accuracy needed for shape preservation

Inventive Principle:

Principle #23Feedback

Solution Approach 2:

The patent combines two different information sources (motion information and deformation information) to create a composite position prediction approach. This composite method leverages the strengths of both approaches: the efficiency of motion-based prediction and the accuracy of deformation-based adjustment, achieving both high productivity and shape precision

Inventive Principle:

Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The method enhances the accuracy of mesh point position determination, reducing shape discrepancies after inflation or deflation, thus improving the overall inflation and deflation effect of the elastic effect and providing a better user experience.

Implementation Method 1

determining motion trajectories of the mesh points in the mesh model of the elastic object based on the deformation positions of the mesh points and an elastic constraint of the mesh model of the elastic object in a state of the volumetric deformation

Methodology Applied

Scientific EffectElasticity: Elasticity

Implementation Method 2

the deformation triggering operation is used to trigger the elastic object to be subjected to volumetric deformation due to an action of a pressure difference, the action of the pressure difference is an action produced by a pressure difference between an interior of the elastic object and an exterior of the elastic object

Methodology Applied

Scientific EffectPressure difference: Pressure Gradient

Data Source

PatentUS20240127541A1Position determination method and device

Publication Date: 2024.04.18 BEIJING ZITIAO NETWORK TECH CO LTD

AI summary

A position determination method includes: constructing a mesh model of an elastic object; in response to a deformation triggering operation for the elastic object, determining deformation information of mesh points in the mesh model of the elastic object; where the deformation information includes a deformation position; determining motion trajectories of the mesh points in the mesh model of the elastic object based on deformation positions of the mesh points and an elastic constraint of the mesh model of the elastic object in a state of the volumetric deformation; and mobilizing, based on the motion trajectories of the mesh points in the mesh model of the elastic object, the mesh model of the elastic object for an elastic motion to cause the elastic object to be subjected to the volumetric deformation. The inflation and deflation effect of the elastic object is ensured. A position determination device is further disclosed.