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Contour line-based three-dimensional entity generation method and device

A technology of three-dimensional entities and contour lines, which is applied in the field of image processing, can solve problems such as sharp edges and corners, and achieve the effect of enhancing smoothness and avoiding sharp edges and corners

Active Publication Date: 2021-11-16
CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a contour-based three-dimensional entity generation method and device to solve the technical problem of sharp edges and corners existing in the current three-dimensional entity generation method

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  • Contour line-based three-dimensional entity generation method and device
  • Contour line-based three-dimensional entity generation method and device
  • Contour line-based three-dimensional entity generation method and device

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Embodiment Construction

[0061] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.

[0062] The schematic diagrams of contour lines and three-dimensional solid images involved in the present invention are as follows: Figure 6 As shown, the contour line refers to the closed curve formed by adjacent points with equal elevation on the topographic map. The points on the same contour line have the same elevation information, and the elevation refers to the point along the vertical line The distance from the direction to the absolute base surface, and the 3D solid im...

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Abstract

The invention discloses a contour line-based three-dimensional entity generation method and device. The method comprises the following steps: acquiring a contour line set for generating a target three-dimensional entity, processing the contour line set to obtain sample points of each contour line, combining the sample points according to a combination mode to obtain a sample point combination, determining a target sample point combination based on screening parameters of each sample point combination, performing enhanced point insertion on the target sample point combination to obtain enhanced points corresponding to the target sample points, and finally generating a three-dimensional entity image according to all the sample points and all the enhanced points. According to the method, sample point combinations which will generate sharp edges and corners in the process of generating the three-dimensional entity by the contour lines can be accurately found out, and enhancement points are inserted for the sample point combinations so as to avoid the sharp edges and corners.

Description

technical field [0001] The invention relates to the field of image processing, in particular to a method and device for generating a three-dimensional entity based on contour lines. Background technique [0002] At present, it is an important method to generate a 3D entity by taking sample points from the contour line to generate a triangulation, and then generating a 3D terrain based on the triangulation. [0003] However, currently, the sample points involved in generating a three-dimensional entity based on the contour line are the inflection points of the contour line, and the generated 3D solid image may have sharp edges and corners. [0004] That is, the current 3D solid generation method based on the inflection point of the contour line has a technical problem of sharp edges and corners, which needs to be improved. Contents of the invention [0005] The invention provides a contour-based three-dimensional entity generation method and device to solve the technical p...

Claims

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Application Information

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IPC IPC(8): G06T17/20
CPCG06T17/205
Inventor 屈星袁喆霍军军赵子龙夏欢
Owner CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION
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