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Ocean scalar visualization method and system based on clustering algorithm under Cesium engine

A clustering algorithm and scalar technology, applied in the field of marine science, can solve problems such as uneven division, and achieve the effect of beautiful display and reasonable interval division.

Active Publication Date: 2021-07-23
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

[0003] In scalar field visualization, the formulation of the color scale largely determines the aesthetics of a picture. Due to the uneven distribution of data density, uneven division often occurs in manual equidistant division. Therefore, it is necessary to design a reasonable Division method, the present invention provides a kind of ocean scalar visualization method and system based on clustering algorithm under the Cesium engine

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  • Ocean scalar visualization method and system based on clustering algorithm under Cesium engine
  • Ocean scalar visualization method and system based on clustering algorithm under Cesium engine
  • Ocean scalar visualization method and system based on clustering algorithm under Cesium engine

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Embodiment Construction

[0033] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0034] In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; it can be directly connected or indirectly connected through an intermediary, it can be the internal communication of two elements or the interaction relationship between two elements. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

[0035] In the description of the present invention, it should be understood that the orientations or positional relationships indicated by the terms "left", "right", "front", "rear", "top", "bottom", etc. are based on the drawings. The orientation or posi...

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Abstract

The invention relates to the technical field of ocean science, in particular to an ocean scalar visualization method and system based on a clustering algorithm under a Cesium engine, and the method comprises the following steps: obtaining global ocean temperature, salinity and sea level data, and constructing an ocean data set through interpolation; performing clustering analysis on the constructed ocean scalar data by using a clustering algorithm, and determining a scalar interval according to a clustering center; dividing scalar coordinate data according to scalar intervals, and constructing triangular mesh arrays of different scalar intervals; determining the color values of different intervals, and carrying out the front-end drawing on the basis of a Geometric Instances construction method of a Cesium engine. By loading NetCDF data and carrying out structured processing on ocean data, dimensions and attributes of the ocean data can be extracted and reserved, and topological information of global unstructured grids can be reserved; a scalar center is further extracted by using a clustering algorithm, so that interval division is more reasonable, and the hierarchical effect of the ocean scalar is displayed more beautifully; the scalar data is visually displayed on a Cesium map engine, and decision making is assisted.

Description

technical field [0001] The invention relates to the field of marine science and technology, in particular to a method and system for visualizing marine scalar quantities based on a clustering algorithm under a Cesium engine. Background technique [0002] Scalar field visualization is one of the current scientific computing visualization researches. Cesium is a foreign map engine based on JavaScript and using WebGL. Cesium supports 3D, 2D, and 2.5D map display, can draw graphics, highlight areas, and provides good touch support, and supports most browsers and mobile terminals. FVCOM is an unstructured triangular grid architecture, finite volume, free surface, and three-dimensional primitive equation marine numerical model. This finite volume integral format can better ensure the mass, momentum, and salinity in the calculation of estuaries, bays, and oceans with complex geometric structures. , the conservation of temperature and heat, among which the advantage of unstructured...

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Application Information

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IPC IPC(8): G06F16/904G06F16/906
CPCG06F16/904G06F16/906Y02A90/10
Inventor 李忠伟宫凯旋
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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