Curved Surface Model Generation via Parameter-Based Deformation
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Solution Overview
Problem
Conventional curved surface model generation methods require a large amount of 3D point cloud data and lack flexibility in controlling the radian and size of the generated model, leading to insufficient expressiveness in 3D visualization and immersion in VR applications.
Innovation Solution
A method and apparatus for generating a curved surface model in a 3D scenario, where only the curved surface parameter needs to be inputted, with two-dimensional coordinates of sampling points obtained and a third-dimensional coordinate determined based on geometrical relationships, allowing for the generation of a curved surface model without requiring extensive point cloud data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional curved surface model generation method is used, then a curved surface model can be generated, but a large amount of 3D point cloud data is required and the radian and size cannot be controlled
Solution Approach 1:
The patent changes the input parameters from requiring large amounts of 3D point cloud data to simply requiring curved surface parameters (radian and size). By modifying what parameters are needed as input, the system achieves both reduced data requirements and improved controllability of the generated model's geometric properties
Solution Approach 2:
The patent uses a planar object model as a template or copy that is then transformed into a curved surface model through parameter-based deformation. This copying approach allows the system to generate curved surfaces without needing extensive point cloud data, as the transformation is driven by controlled parameter changes rather than data-driven reconstruction
2Ease of manufacture
If a planar object model is used in a 3D scenario, then integration is simple, but 3D visualization is insufficient and expressiveness is lacking
Solution Approach 1:
The patent applies curvature to transform planar object models into curved surface models. By introducing curved surfaces instead of flat planes, the system enhances 3D expressiveness and visual realism while maintaining the simplicity of parameter-based control and integration
3Adaptability or versatility
If a planar object model is replaced with a curved surface object model, then expressiveness and immersion are improved, but data input requirements and complexity increase
Solution Approach 1:
The patent extracts only the essential curved surface parameters (radian and size) from the complex process of point cloud data processing. By taking out just the necessary parameters, the system achieves improved expressiveness while reducing the complexity of the generation process, avoiding the need for extensive data collection and processing
Data Source
AI summary
A curved surface model generation method and apparatus in a three-dimensional (3D) scenario are provided. The method includes obtaining a curved surface parameter inputted for a to-be-generated curved surface model; and obtaining two-dimensional coordinates of a plurality of sampling points. A first dimensional direction of each sampling point is a direction of a chord corresponding to an arc at a radial cross section of the curved surface model. A second dimensional direction is a curved-surface width direction of the curved surface model. The method also includes determining, for each sampling point, a coordinate value of the sampling point in a third dimensional direction based on the curved surface parameter, the third dimensional direction being perpendicular to the first dimensional direction and the second dimensional direction; and generating the curved surface model based on coordinate values of each sampling point in the first, second, and third dimensional directions.