Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition

Zhendong LIU; Haixing LIU; Tianyun SU; Zhen JIA; Xinfang LI; Lin ZHOU; Zhuanling SONG

doi:10.1007/s00343-019-8263-1

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Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition

Updated：2023-05-20

- Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition
- Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition
- 海洋湖沼学报（英文） 2019年37卷第6期页码：2025-2036
- Affiliations：
  
  1.First Institute of Oceanography (FIO), Ministry of Natural Resources (MNR), Qingdao 266061, China
  2.Laboratory for Regional Oceanography and Numerical Modelling, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
  3.National Engineering Laboratory for Integrated Aero-Space-Ground-Ocean Big Data Application Technology, Qingdao 266061, China
- Author bio：
  
  LIU Haixing, E-mail:liuhx@fio.org.cn
  SU Tianyun, E-mail:sutiany@fio.org.cn
- Funds：
  
  the National Key Research and Development Program of China(2016YFC1402000)
- DOI：10.1007/s00343-019-8263-1
  中图分类号：
- 收稿：2018-09-25，
  
  录用：2018-12-30，
  
  网络首发：2019-02-20，
  
  纸质出版：2019-11
- Accepted：
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Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition[J]. 海洋湖沼学报（英文）, 2019,37(6):2025-2036.

Zhendong LIU, Haixing LIU, Tianyun SU, et al. Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition[J]. Journal of Oceanology and Limnology, 2019, 37(6): 2025-2036.
Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition[J]. 海洋湖沼学报（英文）, 2019,37(6):2025-2036. DOI： 10.1007/s00343-019-8263-1.

Zhendong LIU, Haixing LIU, Tianyun SU, et al. Dynamic visual simulation of marine vector field based on LIC-a case study of surface wave field in typhoon condition[J]. Journal of Oceanology and Limnology, 2019, 37(6): 2025-2036. DOI： 10.1007/s00343-019-8263-1.

摘要

Abstract

Line integral convolution (LIC) is a useful visualization technique for a vector field. However

the output image produced by LIC has many problems in a marine vector field. We focus on the visual quality improvement when LIC is applied in the ocean steady and unsteady flow field in the following aspects. When a white noise is used as the input in a steady flow field

interpolation is used to turn the discrete white noise into continuous white noise to solve the problem of discontinuity. The "cross" high-pass filtering is used to enhance the textures of streamlines to be more concentrated and continuity strengthened for each streamline. When a sparse noise is used as the input in a steady flow field

we change the directions of background sparse noise according to the directions of vector field to make the streamlines clearer and brighter. In addition

we provide a random initial phase for every streamline to avoid the pulsation effect during animation. The velocities of vector field are encoded in the speed of the same length streamlines so that the running speed of streamlines can express flow rate. Meanwhile

to solve the problem of obvious boundaries when stitching image

we change the streamline tracking constraints. When a white noise is used as an input in an unsteady flow field

double value scattering is used to enhance the contrast of streamlines; moreover

the "cross" high-pass filtering is also adopt instead of two-dimensional high-pass filtering. Finally

we apply the above methods to a case of the surface wave field in typhoon condition. Our experimental results show that applying the methods can generate high-quality wave images and animations. Therefore

it is helpful to understand and study waves in typhoon condition to avoid the potential harm of the waves to people's lives and property.

关键词

Keywords

references

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