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Data-driven BRDF models using real material measurements have become increasingly prevalent due to the development of novel gonioreflectometers, but efficient use of these models in many graphical applications remains challenging due to the few ...

This paper introduces a robust method for removing objectionable reflection interference in photographs captured through a piece of transparent medium. We exploit the fact that a group of image patches extracted from multiple correlated images ...

BRDF importance sampling, which generates sampled directions in a pattern that closely matches the BRDF, is a powerful tool for variance reduction in Monte Carlo rendering. Conventionally, it is challenging to design proper sampling patterns for ...

Realistic Rendering of thin transparent layers bounded by rough surfaces involves substantial expense of computation time to account for multiple internal reflections. Resorting to Monte Carlo rendering for such material is usually impractical since ...

We introduce an analytical BRDF model tailored to the realistic rendering of retroreflective materials. Though these specially-designed materials are frequently encountered in our daily life, such as high-visibility clothing and traffic signs, their ...

A taxi monitoring method is presented to detect anomalous driving behaviors.GPS big data makes it possible to obtain potential knowledge in urban commerce, etc.Smart city development could benefit from our method over GPS big data. As taxi service is ...

This paper presents an efficient approach to render refracting transmissive objects with multi-scale surface roughness, under distant illumination. To correctly capture both fine-scale surface details and large-scale appearances, and enable real-time ...

Web service recommendation plays an important role in building reliable service-oriented systems for both the service providers and the active users. However, with the proliferation of web services on the World Wide Web, traditional service ...

Detailed modeling of appearance affected by dust coverage is challenging because of the numerous physical and material factors on which it depends. The two principal roadblocks are the complexity of simulating dust particle deposition and the difficulty ...

We present a novel approach for real-time rendering of transparent objects with multi-scale rough refraction under all-frequency environmental lighting. In our rendering system, the normal distribution function (NDF) of the surface bumps is expressed ...

The illumination of rough refraction is challenging due to the complex integrations of scattered lights from multiple directions. Prefiltered environment map is able to eliminate the comprehensive integrations, but the precomputation stage protects it ...

Line segment sampling has recently been adopted in many rendering algorithms for better handling of a wide range of effects such as motion blur, defocus blur and scattering media. A question naturally raised is how to generate line segment samples with ...

In a multi-service distibuted virtual environment, objects can provide more services and become dynamic with greater effects in load balancing process, which is not considered in the previous work. Focused on the impact of dyanmic objects and their ...

Dynamic local area lights provide better realism compared with traditional artificial lights, which have been increasing in real-time graphic applications. This paper addresses the problem of real-time direct lighting under dynamic local area lighting ...

Complex natural lighting provides better realism compared to traditional artificial lights, which has been increasing in real-time graphic applications, such as video games and virtual reality. However, rendering with complex natural illumination proves ...

This paper presents a scalable, adaptive algorithm for direct illumination in scenes with many area light sources. Instead of presampling light sources into massive point lights like previous multilight algorithms, the algorithm builds a tree structure ...

Shadow map algorithms are commonly used in shadow generation due to their simplicity and independence of scene complexity. Three aspects are considered in constructing appropriate shadow maps: the number of shadow maps, parameterization of shadow maps ...

This paper proposes a novel adaptive deformation method based on a hierarchical progressive mesh structure. It hierarchically clusters faces to construct a binary tree of the original model and creates a progressive mesh for each node. Based on this ...

The system's scalability is an important problem in the research of distributed virtual environment. By combining XML technology with active leveled interest management, a new XML tree based leveled filtering method --- LevelFilter is presented in this ...

The essential problem of Distributed Virtual Environment (DVE) is to build scalable communication architecture, on which a large number of objects can communicate each other in a dynamical fashion. In this paper, a new XML-based scalable active interest ...