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.

Inactive Publication Date: 2010-02-03
BEIJING RES CENT FOR INFORMATION TECH & AGRI
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Problems solved by technology

[0005] The problem to be solved by the present invention is to provide a method and system for geometric description and surface reconstruction of a three-dimensional model of plant leaves, so as to overcome the defect in the prior art that it is difficult to generate geometric forms of various plant leaves with the same description method

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

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Embodiment Construction

[0032] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0033] A geometric description and curved surface reconstruction system of a plant leaf three-dimensional model of the present invention includes a leaf skeleton representation and generation module, a leaf curved surface meshing module, and a leaf curved surface self-adaptive subdivision module.

[0034]The leaf skeleton representation and generation module uses spline curves to represent the main veins and edge contours of the leaves to form the skeleton structure of the leaves, and the feature points on the spline curves can be obtained from real plant leaves through a three-dimensional digitizer, or It is extracted from the captured plant leaf images by an edge detecti...

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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.

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/00
Inventor 陆声链赵春江郭新宇温维亮肖伯祥
Owner BEIJING RES CENT FOR INFORMATION TECH & AGRI
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