Combining spherical harmonics and point lights for real-time photorealistic rendering

2014 ◽  
Author(s):  
Inwoo Ha ◽  
Minsu Ahn ◽  
Hyungwook Lee ◽  
James D. K. Kim
Keyword(s):  
Real Time ◽  
Spherical Harmonics ◽  
Photorealistic Rendering

scholarly journals Real Time Shadow Mapping for Augmented Reality Photorealistic Rendering

2019 ◽  
Vol 9 (11) ◽  
pp. 2225 ◽  
Author(s):  
Francesco Osti ◽  
Gian Maria Santi ◽  
Gianni Caligiana
Keyword(s):  
Augmented Reality ◽  
Real Time ◽  
Real Life ◽  
Shadow Mapping ◽  
Photorealistic Rendering ◽  
Real Time Image ◽  
Image Capturing ◽  
Microsoft Hololens ◽  
The Right ◽  
Time Image

In this paper, we present a solution for the photorealistic ambient light render of holograms into dynamic real scenes, in augmented reality applications. Based on Microsoft HoloLens, we achieved this result with an Image Base Lighting (IBL) approach. The real-time image capturing that has been designed is able to automatically locate and position directional lights providing the right illumination to the holograms. We also implemented a negative “shadow drawing” shader that contributes to the final photorealistic and immersive effect of holograms in real life. The main focus of this research was to achieve a superior photorealism through the combination of real-time lights placement and negative “shadow drawing” shader. The solution was evaluated in various Augmented Reality case studies, from classical ones (using Vuforia Toolkit) to innovative applications (using HoloLens).

Real-Time Rendering for Multi-Layered Translucent Materials such as Human Skin under Dynamic Environment Lighting

2013 ◽  
Vol 274 ◽  
pp. 423-426 ◽  
Author(s):  
Meng Zhao Yang ◽  
Kuan Quan Wang
Keyword(s):  
Real Time ◽  
Human Skin ◽  
Spherical Harmonics ◽  
Specular Reflection ◽  
Dynamic Environment ◽  
Subsurface Scattering ◽  
Virtual Character ◽  
Environment Map ◽  
Real Scene ◽  
Translucent Material

Human skin is a highly scattering translucent material and is difficult to be scaled. In this paper, we combine approximation of specular reflection with subsurface scattering in the texture space and introduce the dynamic environment lighting to render the human skin to obtain a much more realistic expression. Considering lower computation and requirement for real-time, we use few spherical harmonics coefficients to represent the environment lighting approximated by the environment map. Further, by rotating the environment map, we obtain dynamic rendering effect of human skin appearance, which has a great practical value for creation of virtual character in real scene.

Spherical Harmonics Based HRTF Datasets: Implementation and Evaluation for Real-Time Auralization

2014 ◽  
Vol 100 (4) ◽  
pp. 667-675 ◽  
Author(s):  
Jan-Gerrit Richter ◽  
Martin Pollow ◽  
Frank Wefers ◽  
Janina Fels
Keyword(s):  
Real Time ◽  
Spherical Harmonics

RPR-SORS: Real-time photorealistic rendering of synthetic objects into real scenes

2012 ◽  
Vol 36 (2) ◽  
pp. 50-69 ◽  
Author(s):  
Saulo A. Pessoa ◽  
Guilherme de S. Moura ◽  
Joao Paulo S. do M. Lima ◽  
Veronica Teichrieb ◽  
Judith Kelner
Keyword(s):  
Real Time ◽  
Photorealistic Rendering

The Modeling and Rendering of the Waves

2013 ◽  
Vol 756-759 ◽  
pp. 1766-1768
Author(s):  
Ming Li
Keyword(s):  
Real Time ◽  
Texture Mapping ◽  
Physical Models ◽  
Mesh Model ◽  
Photorealistic Rendering ◽  
Spectrum Function ◽  
Mapping Techniques ◽  
The Waves

The article analyzes the mathematical and physical models of the waves. Base on the oceanography existing statistical observations and spectrum function formula. This article puts forward the method of making waves modeling, and using mesh model and texture mapping techniques to achieve a photorealistic rendering of the waves. The methods have achieved good results in realistic and real-time.

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