Automatic Optimization for Large-Scale Real-Time Coastal Water Simulation

Abstract

We introduce an automatic optimization approach for the simulation of large-scale coastal water. To solve the singular problem of water waves obtained with the traditional model, a hybrid deep-shallow-water model is estimated by using an automatic coupling algorithm. It can handle arbitrary water depth and different underwater terrain. As a certain feature of coastal terrain, coastline is detected with the collision detection technology. Then, unnecessary water grid cells are simplified by the automatic simplification algorithm according to the depth. Finally, the model is calculated on Central Processing Unit (CPU) and the simulation is implemented on Graphics Processing Unit (GPU). We show the effectiveness of our method with various results which achieve real-time rendering on consumer-level computer.

The Application of a Complex Composite Fractal Interpolation Algorithm in the Seabed Terrain Simulation

“…As is known, ( , ) is the real elevation value of each grid node and = −̂ (9) which was used to define = √ ∑ =1 2 (10) Take as the similar standard deviation of the value of grid node elevation in the region.…”

“…M. F. Barnsley, an American mathematician, proposed the fractal interpolation algorithm based on IFS. The terrain model established by this fractal interpolation algorithm solves the previous problem well [9]. However, the fractal interpolation algorithm based on IFS cannot directly process the discrete data; it can only build a terrain model based on regular grid data [9].…”

Flow Modeling and Rendering to Support 3D River Shipping Based on Cross-Sectional Observation Data

“…Particle tracking, streamline rendering, and contour surface rendering are most commonly used to present flow conditions [17][18][19][20][21]. Visual flow effects are used to simulate water surface changes using computer graphics technology, enhancing the sense of reality in a virtual geographic environment [22][23][24][25][26]. Dynamic texture mapping is commonly used to simulate the water surface.…”