caa a22 4500 605447209 CHVBK 20210128100131.0 cr unu---uuuuu 210128e20150701xx s 000 0 eng 10.1007/s11042-014-2132-x doi (NATIONALLICENCE)springer-10.1007/s11042-014-2132-x Diffuse global illumination in particle spaces [Elektronische Daten] [Byungjoon Chang, Sanghun Park, Insung Ihm] Despite substantial efforts in recent years to accelerate rendering methods, the traditional method, based on a combination of recursive ray tracing (RT), photon mapping (PM), and final gathering (FG), is still regarded as computationally intensive. In this paper, we propose a practical ray tracing model that can be readily implemented on a graphics processing unit (GPU) to provide high-speed generation of global illumination, whose quality is comparable to that generated through the traditional time-consuming RT/PM/FG rendering method. Our method employs two particle spaces to generate computationally intensive diffuse interreflection more efficiently. The complexity of light transport within a scene is simulated in one particle space by using indirect light scattering and gathering operations. The calculation that estimates the reflected radiance caused by diffuse interreflection is optimized by using a second particle space, where only the radiance required for final rendering can be rapidly approximated, based on the simulated light flux in the first particle space. We present several example scenes to demonstrate that our ray tracing scheme enables the use of a rendering pipeline that fully exploits the computing architecture of current manycore processors to reproduce effective high-quality global illumination. Springer Science+Business Media New York, 2014 Global illumination nationallicence Diffuse interreflection nationallicence Particle space nationallicence Ray tracing nationallicence Photon mapping and final gathering nationallicence Multiple bounces nationallicence Chang Byungjoon Graphics Laboratory, Digital Media and Communications R&D Center, Samsung Electronics, 443-742, Suwon, Republic of Korea aut Park Sanghun Department of Multimedia, Dongguk University, 100-715, Seoul, Republic of Korea aut Ihm Insung Department of Computer Science and Engineering, Sogang University, 121-742, Seoul, Republic of Korea aut Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/13(2015-07-01), 4987-5006 1380-7501 74:13<4987 2015 74 11042 https://doi.org/10.1007/s11042-014-2132-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s11042-014-2132-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chang Byungjoon Graphics Laboratory, Digital Media and Communications R&D Center, Samsung Electronics, 443-742, Suwon, Republic of Korea aut NATIONALLICENCE 700 1- Park Sanghun Department of Multimedia, Dongguk University, 100-715, Seoul, Republic of Korea aut NATIONALLICENCE 700 1- Ihm Insung Department of Computer Science and Engineering, Sogang University, 121-742, Seoul, Republic of Korea aut NATIONALLICENCE 773 0- Multimedia Tools and Applications Springer US; http://www.springer-ny.com 74/13(2015-07-01), 4987-5006 1380-7501 74:13<4987 2015 74 11042