Visualization method of global climate vector field data based on VR and gesture interaction technology

Abstract

The invention discloses a global climate vector field data visualization method based on VR and a gesture interaction technology. The method comprises the steps that a 3D environment is set up, and a scene containing an earth and a cosmic background is designed; map data acquired from the Natural Earth is added to the designed earth, and then weather data is downloaded from a global forecasting system operated by the National Weather Service and is decoded; next, the data is subjected to wind direction quick reference and geostrophic wind approximate solving, vector wind is projected to the designed earth, and finite difference approximation is used for estimating distortion in an interpolation process; and last, interaction demands are designed, and various gestures are defined according to the demands. Through the method, global climate changes are simulated more realistically, the perceptibility and authenticity of a model and the data are enhanced, information details at a higher level are obtained, a user can truly feel a research object standing in front and can operate the research object through gestures, and therefore a visual spatial data visualization analysis environment is constructed.

Description

Technical field [0001] The invention relates to the technical field of computer graphics, in particular to a method for visualizing global climate vector field data based on VR and gesture interaction technology. Background technique [0002] The visualization method of global climate vector data provides another intuitive and clear expression for the display of traditional weather vector data, and provides a convenient tool for relevant personnel to analyze climate data. [0003] Climate data generally includes vector field data such as wind and ocean currents. For three-dimensional vector field data, traditional vector field visualization methods such as arrow diagrams, flow diagrams, and line integral convolutions are generally provided. Icon, geometric, and texture methods are commonly used. Wait. For forecasters, it is difficult to gain an understanding of the entire atmosphere through these complex graphics. Three-dimensional atmospheric data visualization methods, especial...

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Problems solved by technology

VR has a significant effect on further improving the readability of visualized data. A large number of visualization studies use VR. Irene Katsouri, Aimilia Tzanavari, Kyriakos Herakleous, and Charalambos Poullis. 2015. Visualizing and assessing hypotheses for marine archaeology in a VR CAVE environment. ACM J. Comput.Cult.Herit.8, 2, Article 10 (March 2015), 18pages developed an immersive 3D visualization application using VR CAVE, aiming to enable researchers to excavate the rich information provided by this ancient shipwreck, and also has a great impact on archeology. Research on data visualization in virtual reality environment, but little research on visualization of 3D atmospheric data in virtual reality environment

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