The realistic rendering of scenes defined by the cloud of points

Anatoly Lysykh; Aleksandr Anikeev; Andrey Zhdanov; Dmitry Zhdanov

doi:10.1117/12.2601632

9 October 2021 The realistic rendering of scenes defined by the cloud of points

Anatoly Lysykh, Aleksandr Anikeev, Andrey Zhdanov, Dmitry Zhdanov

Proceedings Volume 11897, Optoelectronic Imaging and Multimedia Technology VIII; 1189715 (2021) https://doi.org/10.1117/12.2601632
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Conference Poster

Abstract

The paper presents an effective method for calculating global illumination of scenes with a voxel representation of geometry, based on the Path Tracing method. The method is aimed to obtain a fast and reliable estimate of the luminance of global illumination in scenes obtained as a result of three-dimensional real-world scanning. To further increase the calculation efficiency, the method can be transferred to the GPU. The article discusses the main works on the visualization of volumetric geometry. The octree was chosen as the main representation of the geometry in memory, which allows accelerating ray tracing in the scene and reducing the amount of memory required. Optimizations of the ray tracing algorithm in octree and voxel matrix representations are described and applied. A method for estimating the calculation accuracy by evaluating the mean square error over the entire image is presented. Testing and comparison of the method results on two representations of geometry in memory: octree and three-dimensional matrix, as well as a comparison of the method with the original Path Tracing method, which revealed a twofold acceleration of the calculation, were carried out. Optimizations are proposed to further improve the efficiency of the method.

Citation Download Citation

Anatoly Lysykh, Aleksandr Anikeev, Andrey Zhdanov, and Dmitry Zhdanov "The realistic rendering of scenes defined by the cloud of points", Proc. SPIE 11897, Optoelectronic Imaging and Multimedia Technology VIII, 1189715 (9 October 2021); https://doi.org/10.1117/12.2601632

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available