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Logic type graph generation method based on graph-text method

A graphics generation and logical technology, applied in the direction of 2D image generation, editing/combining graphics or text, image data processing, etc.

Pending Publication Date: 2022-06-28
NANJING UNIV OF FINANCE & ECONOMICS
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Problems solved by technology

However, because there is still a large gap between the abstract representation of vertex-edge graphs and the appearance representation of graphs, the current application of graph grammars focuses on the definition and analysis requirements of visual languages, and few researchers use it for graphs. generate field

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  • Logic type graph generation method based on graph-text method
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  • Logic type graph generation method based on graph-text method

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Embodiment Construction

[0035] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

[0036] In one embodiment, combining figure 1 , provides a kind of logic type graph generation method based on graph grammar, described method comprises the following steps:

[0037] Step 1, formulate rules, including constructing a set of cCGG productions for generating and analyzing relevant abstract point-edge graphs, and setting a set of shape rules for specific graph generation requirements;

[0038] Each production in the set of cCGG productions is composed of two spatial graphs as left and right ends, L→R, and each node in the spatial graph has a coordinate valu...

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Abstract

The invention discloses a logic type graph generation method based on an image-text method, which comprises the following steps of: formulating rules, namely constructing a group of cCGG generation formulas for generating and analyzing related abstract point edge graphs, and setting a group of shape rules according to specific graph generation requirements; generating a point-edge graph based on the formulated generation formula; and drawing a graph based on the point-edge graph by using a shape rule. According to the method, a subframe of a coordinate graphics method CGG, namely a continuous coordinate graphics method cCGG (continuous graphics method), is improved, so that the graphics method not only can generate a point-edge graph conforming to corresponding grammar constraints, but also can generate a corresponding visual graph from the point-edge graph; and the non-visual part of the generated graph, namely the abstract point edge graph, can be subjected to grammatical structure analysis by using a production form, and a logical graph generation method supporting bidirectional workflow is provided.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional formalization method and graph generation, in particular to a method for drawing and verifying different types of graphs by using an improved graph grammar formal framework. Background technique [0002] As a two-dimensional formal method, shape grammar is a rule-based logical graph generation tool. Different from one-dimensional character grammars, shape grammars use shapes as the basic elements of the grammar, that is, grammar rules are composed of various types of shapes at the left and right ends. Based on these rules, the grammar operations are performed to scale, overlap, and rotate various basic shapes. Shape grammars can intuitively and canonically generate different types of graphics. After years of development, shape grammar has been widely used in architectural design, scene reconstruction, industrial design and other fields. Shape grammar implements a unidirectional workflow ...

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Application Information

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IPC IPC(8): G06T11/20G06T11/60
CPCG06T11/206G06T11/60
Inventor 刘禹锋杨帆孙宏亮
Owner NANJING UNIV OF FINANCE & ECONOMICS
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