Pipeline three-dimensional reconstruction method based on axonometrical drawing

Abstract

The invention discloses a pipeline three-dimensional reconstruction method based on an axonometrical drawing. The method comprises the steps of firstly conducting diagram preprocessing on a pipeline axonometrical drawing, and maintaining the connectivity among pipe sections in an original pipeline; then extracting coordinate data of each pipe section in the preprocessed pipeline axonometrical drawing; once again, conducting coordinate transformation on the extracted data according to a projection rule of an isometric drawing and a diagram data storage format of AutoCAD, that is, transforming two-dimensional geometric data in the axonometrical drawing into three-dimensional geometric data, and judging the connectivity among the pipeline sections; finally, achieving the pipeline three-dimensional model construction according to the judged connectivity among the pipeline sections and the transformed coordinate data of the pipeline sections. According to the pipeline three-dimensional reconstruction method based on the axonometrical drawing, the three-dimensional reconstruction is conducted by adopting a diagram analyzing technology, the pipeline three-dimensional model construction based on the pipeline axonometrical drawing can be achieved, and the method is strong in practicability and operability.

Description

technical field [0001] The invention relates to the technical field of pipeline layout design, in particular to a three-dimensional pipeline reconstruction method based on an axonometric drawing. Background technique [0002] pipe axonometric Figure 1 Generally, it is drawn with AutoCAD software. In existing pipeline layout design projects, two projection methods, central projection and parallel projection, are often used. Most engineering drawings are expressed by parallel projection. The isometric drawing is generated by the parallel projection method and is a three-dimensional plan; in other words, it has a static three-dimensional effect in the projection direction forming the axonometric drawing. When the axonometric drawing is viewed from different angles, This static three-dimensional sense no longer exists; it is not a real 3D pipeline map, and the pipeline layout cannot be observed from different positions and angles, and design errors such as interference between ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a method for three-dimensional reconstruction of pipelines based on axonometric drawings in view of the defects of the above-mentioned prior art; it aims to solve the problem that it is difficult to effectively eliminate the layout design errors of pipeline axonometric drawings in the construction design stage

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