Local refreshing method of large-scale terrain rendering in three-dimensional scene

Abstract

The invention provides a local refreshing method of large-scale terrain rendering in a three-dimensional scene. The local refreshing method comprises steps that step1: a local terrain region required to be loaded is preprocessed; step2: various levels of terrain tiles superposed with the local terrain region are acquired; step3: the data refreshing of the local terrain region is realized. When the local terrain data is loaded in the three-dimensional scene, not all of terrain data are required to be reloaded, and only the local terrain blocks required to be loaded are updated, and therefore data scheduling time is reduced, and the refreshing speed of the loaded terrain data is guaranteed.

Description

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AI Technical Summary

Benefits of technology

The technology described by this patented allows for faster loading or updating of terrain without having everything changed again during flight. This saves on processing times while still maintaining high levels of accuracy.

Problems solved by technology

This patented describes an improved way for displaying three dimensional terrains on computer screens during flight simulation or other applications that require realistically accurate maps such as those used in airplanes navigation systems. However, existing methods have limitations due to their limited ability to update areas within this map without overloading them too much.

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