| 全球海面简单高效实现技术研究 |
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| 引用本文： | 郭胜,徐智勇.全球海面简单高效实现技术研究[J].北京联合大学学报(自然科学版),2012,26(4):1-4. |
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| 作者姓名： | 郭胜 徐智勇 |
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| 作者单位： | 首都师范大学三维信息获取与应用教育部重点实验室,北京,100048;中国科学院电子学研究所创新工程中心,北京,100190 |
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| 摘 要： | 在数字地球上模拟海面,是数字地球可视化以及海洋仿真的重要需求之一。利用屏幕细分自适应算法对海面网格进行计算,并在GPU中处理其网格点相应的坐标转换和计算,大大减少了对CPU的占用率。在可视范围内,对海面网格进行实时的优化处理,提高了效率,满足数字地球相关仿真系统对海面仿真的需求。在解决海洋和陆地分离显示上,提出了一种简单的设置透明度的实现方法,既满足了现实需要,也大大提高了使用效率。
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| 关 键 词： | 数字地球 海面网格 图形处理器(GPU) |
Simple and Efficient Technology Research of Global Ocean Surface |
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| GUO Sheng,XU Zhi-yong.Simple and Efficient Technology Research of Global Ocean Surface[J].Journal of Beijing Union University,2012,26(4):1-4. |
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| Authors: | GUO Sheng XU Zhi-yong |
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| Institution: | 1.Key Laboratory of 3-Dimensional Information Acquisition and Application,Ministry of Education, Capital Normal University,Beijing 100048,China; 2.Innovation center,Institute of Electronic,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | To simulate the ocean surface on digital earth is one of the important requirements for digital earth visualization and marine simulation.The screen sub-adaptive algorithm is used to calculate the sea surface grid.And the GPU handle the grid points corresponding with coordinate transformation and calculation,and reduce the occupancy rate of the CPU.Within the visual domain,real-time optimization on the sea grid improves efficiency and meets the needs of the Digital Earth simulation system for the simulation of sea.In order to solve the separation of marine and terrestrial,a simple set the transparency to achieve is proposed.This method can meet the practical needs and greatly improve the efficiency in the use. |
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| Keywords: | Digital earth Sea grid GPU |
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