Method for carrying out self-adaption simplification, gradual transmission and rapid charting on three-dimensional model

Abstract

The invention provides a method for carrying out self-adaption simplification, gradual transmission and rapid charting on a three-dimensional model by utilizing a space solid view model, which simulates and analyzes the display process of the three-dimensional model by utilizing the space solid view model to realize the self-adaption simplification, gradual transmission and rapid charting of the three-dimensional model, thereby completely solving the problems of network transmission and display of the mass three-dimensional model data. The beneficial effects of the method provided by the invention are mainly reflected in that the lossless display and self-adaption simplification of the three-dimensional model can be guaranteed; the display effect before the simplification is consistent to that after the simplification; the gradual transmission designed based on the simplification method can completely solve the conflict between the explosion type increase of the mass space data and the transmission through the limited network bandwidth; the data volume of the three-dimensional model after the simplification is still small; and the charting speed of the three-dimensional model can be obviously increased by utilizing a residence memory when a view window is refreshed.

Description

technical field [0001] The invention relates to a method for self-adaptive simplification, gradual transmission and fast drawing of a three-dimensional model, belonging to the fields of spatial information technology, computer graphics, virtual reality technology and computer operating systems. Background technique [0002] Spatial entities are the abstraction of entities or phenomena that exist or are virtual in the natural world, and are associated with spatial positions or features. They are the smallest unit that cannot be divided in the natural world. The basic spatial entities are points, lines, surfaces, and volumes. types. In computer graphics, a model is usually used to describe a three-dimensional object, and a three-dimensional model corresponds to a volume entity in a space entity, and then displayed by a computer or other video equipment. The three-dimensional models shown can be real-world entities or fictional things, from as small as atoms to as large as mas...

AI Technical Summary

Problems solved by technology

[0009] 1) The current 3D model simplification method cannot achieve adaptive lossless simplification when displayed on the client, that is, the display effect before and after simplification is always the same

[0010] 2) The efficiency of 3D model data simplification is low, and it is not suitable for real-time simplification of massive 3D model data. The original data needs to be preprocessed and stored in multi-scale layers. If the original data changes, it needs to be reprocessed, that is, increase The storage space is limited, and the adaptive progressive transmission cannot be truly achieved according to the display of the 3D model on the client.

[0011] 3) The current research is mainly aimed at processing the original 3D model data, and then carrying out network transmission. Although the amount of transmitted data can be reduced, with the increase of data volume, the gap between the limited network bandwidth and the transmission of massive spatial data The contradiction between the development of hardware and the requirements of drawing speed cannot be completely resolved, so the current research ideas and methods cannot fundamentally solve the problem.

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