优化的地表气流及气象数据可视化方法
首发时间:2017-05-16
摘要:风云四号新一代静止轨道气象卫星已经成功获取首批图像和数据,本文主要针对其影像数据的应用,研究地表气流的可视化方法。本文从视觉科学中的大脑初级视觉皮层对图案的感知特性展开理论研究,总结流向感知的理论原则,提出一种非对称的动态流线方法,用以表现气流的模式特征。文中比较了传统的箭头和风羽网格对可视化感知的误导性影响,论述了该流线方法在处理流线间距、地图缩放,以及与颜色通道、纹理通道共同作用下可能存在的问题和解决方案。
关键词: 计算机图形学 气象数据可视化 可视化感知 气流 流线
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Improved Method of Surface Airflow and Meteorological Data Visualization
Abstract:FY4-A, the new generation of geostationary orbit meteorological satellite, has successfully obtained the first images and data. This paper focuses on the application of its image data, researches visualization methods of surface airflow. In this paper, we study the perception of patterns of the primary visual cortex in vision science, summarizing the theoretical principles of flow perception, present an asymmetric dynamic streamline method to represent patterns of airflow. The misleading influence of the traditional grids of arrow and wind barbs on the visual perception is compared. Potential problems and solutions are discussed, when using streamline method in dealing with streamline spacing, map scale and combined with color channel and texture channel.
Keywords: Computer graphics meteorological data visualization visual perception airflow streamline
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