Spatial Data Engine Method for Virtual Reality

Abstract

The invention relates to a virtual reality technology in the field of computers and particularly relates to a spatial data engine of the virtual reality technology. The spatial data engine method for virtual reality comprises the following steps of (1) establishment of a data index in a spatial database, storage of three-dimensional model data, (2) massive spatial data real-time concurrency access high throughput transmission method based on out-of-core, and (3) external memory-internal memory-video memory self-adaptation scheduling algorithm. According to the spatial data engine method facing the virtual reality, an integration and consistency access method of spatial data with multiple formats and multiple data sources is achieved, the problem that massive spatial data can not be all loaded in the internal memory due to the fact that the space of the inner memory and the space of the video memory are limited is effectively resolved through a data organization mode based on the external memory, a massive data query and transmission access which is stable, fast and high in throughput can be offered, the internal memory and the video memory are effectively monitored and managed, and the optimum balance of the efficiency and effect is achieved.

Description

technical field [0001] The invention relates to a virtual reality technology in the computer field, in particular to a spatial data engine of the virtual reality technology. Background technique [0002] In 1995, ESRI launched SDE1.0, which enabled spatial data and tabular data to be stored in a commercial relational database management system at the same time. It first proposed the concept of spatial data engine (spatial data engine) and formed the prototype of the first generation spatial data engine. Subsequently, the spatial data engine system SFS (Streaming Feature Server) launched by Skyline can read a variety of spatial data sources, and can efficiently transmit various complex feature layer data (vector data) through the network. [0003] Spatial data (SpatialData) is a special type of data, which refers to any data with spatial coordinates. Now, spatial data has been widely used in various industries and departments of society, such as urban planning, transportatio...

AI Technical Summary

Problems solved by technology

The virtual reality system has high requirements for real-time rendering, and the efficiency of internal and external memory exchange directly affects the visual effect of the scene. It has higher requirements for the organization and scheduling of 3D model data than other types of simulation systems. Commercial spatial database or spatial index technology can not meet the needs of engineering applications

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