The water effects of
            <i>Pirates of the Caribbean</i>

Hopper, Rob; Wolter, Kai

doi:10.1145/3084363.3085044

Cited by 3 publications

(5 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Thus the number of circular Gaussian kernels is 2N + 1, where N is an integer. We then have 3N + 2 parameters: weight w a and variance σ 2 a of the central kernel, N weights w i and variances σ 2 i of the symmetrical kernel pairs, and the distances d i from the center to each symmetrical kernel pair.…”

Section: Appendix C Elliptical Gaussian Approximationmentioning

confidence: 99%

See 1 more Smart Citation

Temporal and spatial anti-aliasing for rendering reflections on water waves

et al. 2021

View full text Add to dashboard Cite

The reflection of a bright light source on a dynamic surface such as water with waves can be difficult to render well in real time due to reflection aliasing and flickering. In this paper, we propose a solution to this problem by approximating the reflection direction distribution for the water surface as an elliptical Gaussian distribution. Then we analytically integrate the reflection contribution throughout the rendering interval time. Our method can render in real time an animation of the time integrated reflection of a spherical light source on highly dynamic waves with reduced aliasing and flickering.

show abstract

Section: Appendix C Elliptical Gaussian Approximationmentioning

confidence: 99%

“…Ocean simulation and rendering have been studied in the computer graphics field for 40 years. That research can simulate an ocean under various weather conditions [1], and interacting with solid objects in three dimensions in real time [2]. However many problems in real-time ocean rendering remain.…”

Section: Introductionmentioning

confidence: 99%

Temporal and spatial anti-aliasing for rendering reflections on water waves

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Tessendorf [1] proposed an ocean wave simulation framework using spectrum-based approach, which is still used as the main solution of ocean wave simulation in industry until now. Subsequently, according to different simulation scenarios, researchers introduced many different wave spectrums, such as Phillips spectrum [1], Pierson-Moskowitz (PM) spectrum [2], Joint North Sea Wave Observation Project (JONSWAP) spectrum [2,3], and Texel-Marsen-Arsloe (TMA) spectrum [4,5]. Spectrum-based approaches are characterized by their rapidity, and are applicable to real-time simulation of largescale ocean waves.…”

Section: Related Workmentioning

confidence: 99%

“…Equation 16is the SPH discrete form of the left side of (10). For the right side of (10), it can be directly discretized according to (5):…”

Section: ) Divergence-free Velocity Fieldmentioning

confidence: 99%

A Unified Anisotropic Particle-Based Ocean Wave Simulation Framework for Marine Simulator Visual System

Ren

Wang

et al. 2020

IEEE Access

View full text Add to dashboard Cite

It is urgent to improve the physical reality of ocean scenes in marine simulator for the maritime industry. In this paper, we propose a unified anisotropic particle-based ocean wave simulation framework for marine simulator. In the unified framework, a novel hybrid SPH method is applied to model the ocean waves, which combines a series of nonlinear density constraints and divergence-free velocity field constraints. By solving density constraints, the particle position distribution is directly adjusted to keep a constant density. Experiments show that the hybrid SPH method has advantages in compressibility and stability. Moreover, a novel stochastic fluctuating wind field model is integrated into the hybrid SPH method. The Perlin noise and a modified log wind profile are introduced to enrich the details of wind field. We also introduce a novel oil spill model for marine simulator based on number density, which can achieve a desired sharp density changes at interfaces between multiple fluids. For real-time surface reconstruction, we propose an improved anisotropic particle transformation method based on the distribution of the neighboring particles. The problem of particle deformation near the boundary is solved by our piecewise correction function, with the sharp features and anisotropy maintained. When calculating the covariance matrix and weighted position, the contribution of neighboring particles in other fluid phases is considered to eliminate gaps between multiple fluids in the oil spill scenes. The simulation results show that our unified anisotropic framework based on the SPH concept can easily integrate other models, has strong expansibility, and is very applicable to simulate complex ocean scenes. INDEX TERMS marine simulator, SPH, ocean wave, wind field, oil spill, anisotropic transformation.

show abstract

“…Wave spectrums can be divided into frequency spectrums S(ω) and directional spectrums S(ω,θ). Generally, the spectrums used for wave modeling includes Pierson-Moskowitz spectrum [2], Phillips spectrum [1,2], Joint North Sea Wave Observation Project (JONSWAP) spectrum [2,3], and Texel-Marsen-Arsloe (TMA) spectrum [4,5]. Directional spectrums are the extension of frequency spectrums.…”

mentioning

confidence: 99%

Physics-Based Simulation of Ocean Scenes in Marine Simulator Visual System

Ren

Qiu

et al. 2020

Water

View full text Add to dashboard Cite

The realistic simulation of ocean scenes is of great significance in many scientific fields. We propose an improved Smoothed Particle Hydrodynamics (SPH) framework to simulate the ocean scenes. The improved SPH combines nonlinear constant density constraints and divergence-free velocity field constraint. Density constraints adjust the particle distribution on position layer, so that the density is constrained to a constant state. The addition of the divergence-free velocity field constraint significantly accelerates the convergence of constant density constraint and further reduces the density change. The simulation results show that the improved SPH has high solution efficiency, large time steps, and strong stability. Then, we introduce a unified boundary handling model to simulate coupling scenes. The model samples the boundary geometry as particles by means of single layer nonuniform sampling. The contribution of the boundary particles is taken into account when the physical quantities of fluid particles are computed. The unified model can handle various types of complex geometry adaptively. When rendering the ocean, we propose an improved anisotropic screen space fluid method, which alleviates the discontinuity problem near the boundary and maintains the anisotropy of particles. The research provides a theoretical reference for the highly believable maritime scene simulation in marine simulators.

show abstract

The water effects of Pirates of the Caribbean

Cited by 3 publications

References 1 publication

Temporal and spatial anti-aliasing for rendering reflections on water waves

Temporal and spatial anti-aliasing for rendering reflections on water waves

A Unified Anisotropic Particle-Based Ocean Wave Simulation Framework for Marine Simulator Visual System

Physics-Based Simulation of Ocean Scenes in Marine Simulator Visual System

Contact Info

Product

Resources

About