caa a22 4500 605540187 CHVBK 20210128100910.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00371-013-0914-1 doi (NATIONALLICENCE)springer-10.1007/s00371-013-0914-1 Adaptive cluster rendering via regression analysis [Elektronische Daten] [Xiao Liu, Chang Zheng] Monte Carlo ray tracing suffers noise and aliasing because of low sampling rate. We show that sparse samples can be used to generate high quality images based on feature cluster and regression analysis. Our algorithm has two main stages: adaptive sampling and polynomial reconstruction. In sampling stage, rendering space are organized into clusters based on their features. A feature vector is used to distinguish the different features, which contains gradient, variance and position. Clusters are progressively modified by adaptive sampling. In reconstruction stage, we model each cluster by smooth polynomial functions using regression analysis. The final image is synthesized by integrating these functions. The experiments show that our algorithm generates higher quality images than the previous methods. Springer-Verlag Berlin Heidelberg, 2013 Cluster sampling nationallicence Adaptive rendering nationallicence Feature vector nationallicence Polynomial function nationallicence Liu Xiao Integrated Information System Technology Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing, China aut Zheng Chang Integrated Information System Technology Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing, China aut The Visual Computer Springer Berlin Heidelberg 31/1(2015-01-01), 105-114 0178-2789 31:1<105 2015 31 371 https://doi.org/10.1007/s00371-013-0914-1 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/s00371-013-0914-1 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Xiao Integrated Information System Technology Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 700 1- Zheng Chang Integrated Information System Technology Laboratory, Institute of Software, Chinese Academy of Sciences, Beijing, China aut NATIONALLICENCE 773 0- The Visual Computer Springer Berlin Heidelberg 31/1(2015-01-01), 105-114 0178-2789 31:1<105 2015 31 371