An Instance-Based Large-Scale Scene Synthesis Method

Abstract

The invention discloses an instance-based large-scale scene composition method. The method automatically optimizing and grouping structure units to establish a large-scale scene includes the steps of giving a small scene model, splitting the model by three equally spaced orthogonal plane sets to establish a structure unit set of the model, and extracting geometrical characteristics of the structure units and adjacency relation of the structure units; defining a Petri net structure to establish parametric representation in target model construction process according to expansion factors in three directions; applying the defined Petri net and Parametric representations thereof as coded representation of a target model; and optimizing the construction process by artificial immune algorithm so as to obtain a model the most approximate to the instance model structure. The scale is expanded by structural characteristics of the instant model so as to develop the large-scale scene model, modeling efficiency is increased, and model resources are reused effectively.

Description

technical field [0001] The invention relates to a large-scale scene synthesis method based on examples, which belongs to the technical field of computer software and computer graphics, and specifically relates to a method for expanding the scale of an instance model by using a computer for model analysis, reasoning modeling, and optimization combination. method to generate larger-scale scene models. Background technique [0002] In the fields of digital entertainment and virtual reality, building large-scale complex geometric models such as cities and mountains has become a necessary means to enrich user experience, and the demand for 3D models in the fields of industry and digital heritage protection is also increasing. Existing modeling methods often use standard CAD modeling tools, whose complex operation process requires a lot of training for users, and the modeling efficiency is low when building complex models, so it is difficult to meet the needs of practical applicat...

AI Technical Summary

Problems solved by technology

Existing model synthesis methods are only satisfied with finding a feasible solution that meets the adjacency constraints of the instance model, and cannot fully reflect other structural characteristics of the instance model

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