Plant leaf three-dimensional model geometric description and curved surface reconstruction method and system

A technology for 3D models and plant leaves, used in 3D modeling, image data processing, instruments, etc.
CN101639946AInactive Publication Date: 2010-02-03BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING RES CENT FOR INFORMATION TECH & AGRI
Publication Date
2010-02-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a plant leaf three-dimensional model geometric description and curved surface reconstruction system, and the system comprises a leaf framework representation and generation module which utilizes spline curves for representing main veins and profiles of edges of the leaf and further forming a framework structure of the leaf; a leaf curved surface meshing module which is usedfor meshing the part enclosed by the main veins and two profile lines in the framework structure of the leaf and further forming a mesh geometric curved surface of the leaf; and a leaf curved surfaceself-adaptive subdivision module which is used for carrying out smooth treatment on the mesh geometric curved surface of the leaf. The invention further discloses a plant leaf three-dimensional modelgeometric description and curved surface reconstruction method. The invention can use one same description method for generating the geometric shapes of a variety of plant leaves, and the establishedleaf module can not only be visually real, but also meet the needs on dynamic growth and certain physiological functions of the leaves.
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Description

technical field

[0001] The invention relates to the technical field of computer graphics, in particular to a method and system for geometric description and curved surface reconstruction of a plant leaf three-dimensional model. Background technique

[0002] In recent years, with the continuous improvement of computer hardware performance and the deepening of research in the fields of virtual plant modeling, landscape design, and games, it has become possible and necessary to obtain highly realistic plant shapes. At the same time, the diversity of plant forms has attracted many researchers. It is precisely because of the complex physiological, geometric and optical properties of plant leaves that the morphological modeling and visualization of plant leaves is still one of the most challenging tasks in realistic natural scene simulation.

[0003] In computer graphics, bicubic surfaces are often used to model individual leaf surfaces. However, one problem with bicubic surface...

Claims

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