Real-time Shadow Algorithm Improvements in Digital Earth Scenarios

Authors

Defa Zhang, 1. Computer Department, Taizhou Vocational & Technical College, Taizhou 233 100, China; ;
Yiwei Wang, 1. Computer Department, Taizhou Vocational & Technical College, Taizhou 233 100, China; ;
Wang Rui, 2. Computer College, Beijing Infornation Science & Technology University, Beijing 100192, China;;

Abstract

Abstract: Studying real- time shadow generating and rendering algorithms in digital earth virtual reality scenes, a new method was provided to improve the shadow rendering quality and efficiency of earth scenes, based on the characteristics of huge dataset, huge coordinates and frequent scheduling mechanisms. Comparing with the classics CSM shadow map algorithm, the method proposed focused on the optimization of shadow splitting ranges, as well as a new pipeline separating the rendering steps of terrain tiles and objects, so to improve both the correctness and efficiency. analyzes The problems caused by shadow rendering while running dynamic terrain tile scheduler simultaneously were analyzed, and a practicable solution was provided for it, as well as some future plans.

Recommended Citation

Zhang, Defa; Wang, Yiwei; and Rui, Wang (2021) "Real-time Shadow Algorithm Improvements in Digital Earth Scenarios," Journal of System Simulation: Vol. 27: Iss. 6, Article 18.
DOI: 10.16182/j.cnki.joss.2015.06.018
Available at: https://dc-china-simulation.researchcommons.org/journal/vol27/iss6/18

First Page

1274

Revised Date

2015-03-04

DOI Link

https://doi.org/10.16182/j.cnki.joss.2015.06.018

Last Page

1279

CLC

TP301.6

Recommended Citation

Zhang Defa, Wang Yiwei, Wang Rui. Real-time Shadow Algorithm Improvements in Digital Earth Scenarios[J]. Journal of System Simulation, 2015, 27(6): 1274-1279.

DOI

10.16182/j.cnki.joss.2015.06.018