Authors A.Y. Demin, V.A. Sorokin, I.A. Anfyerov, A.A. Khamuhin
Month, Year 01, 2016 @en
Index UDC 004.92; 519.876.5
Abstract The paper reviews the issues related to the visualization of three-dimensional surface based on the height maps and Autonomous Underwater Vehicle (AUV) group simulation modeling in 3D space. In order to construct 3D models we propose to place the polygonal mesh of vertices with the given step over the height map, followed by the model being formed on the basis of obtained 3D array of points. 3D model is built upon using this array, as well as its automatic texturing by analyzing the height of the polygons to increase realism. To simulate the behaviour of AUV groups, a multi-agent approach is proposed and a set of agents’ characteristics, features of its environment and their interactions are developed. As the results in the designed application we describe the modeling process visualization based on Unity-technology. A 3D vector field that defines the undercurrents as well as some other states of the environment is used as the model of the environment. During the simulation, each agent being iterated interacts with the model of the environment, reaching the value of this field at the position of the underwater vehicle. Analyzing the obtained values we take into account the influence of the environment on the movement of the AUV. Besides the native AUVs, some other competing objects can move in the underwater environment in a similar way. It is the aim of AUVs to detect them. Such objects can be launched both from the surface and underwater vehicles, and go through the alignment of some AUVs at different angles and at different speeds. In this case, the purpose of the simulation is to collect statistics on whether it’s possible to detect foreign objects by AUV group in different types of alignment while implementing various missions of individual AUVs. To visualize a single AUV we created a high-polygonal animated 3D model of the underwater vehicle with the specified materials parameters. The 3D model of the underwater vehicle is designed with Blender, the tool for 3D modeling. Sutec designed by the Swedish company was taken as a basis. Mesh Collider and Rigidbody controllers were used to assure some physical properties like the possibility of collision with other objects and terrain, and the effects of gravity. The manual mode provides the ability to control the camera view from a third party, for which the parameter "range" is implemented using GlobalFog shader.

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Keywords Three-dimensional visualization; Autonomous Underwater Vehicle (AUV); underwater environment; texturization; multiagent simulation; Unity.
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