1. Gradient-domain path reusing
2. Philippe Bekaert , Mateu Sbert , and John Halton . 2002 . Accelerating Path Tracing by Re-Using Paths . In Proceedings of the 13th Eurographics Workshop on Rendering. Eurographics Association, 125–134 . Philippe Bekaert, Mateu Sbert, and John Halton. 2002. Accelerating Path Tracing by Re-Using Paths. In Proceedings of the 13th Eurographics Workshop on Rendering. Eurographics Association, 125–134.
3. Path graphs
4. Iliyan Georgiev , Jaroslav Křivánek , Tomáš Davidovič , and Philipp Slusallek . 2012. Light Transport Simulation with Vertex Connection and Merging. 31, 6 (Nov . 2012 ), 192:1–192:10. https://doi.org/10/gbb6q7 Iliyan Georgiev, Jaroslav Křivánek, Tomáš Davidovič, and Philipp Slusallek. 2012. Light Transport Simulation with Vertex Connection and Merging. 31, 6 (Nov. 2012), 192:1–192:10. https://doi.org/10/gbb6q7
5. Toshiya Hachisuka , Shinji Ogaki , and Henrik Wann Jensen . 2008. Progressive Photon Mapping. 27, 5 (Dec . 2008 ), 130:1–130:8. https://doi.org/10/cn8h39 Toshiya Hachisuka, Shinji Ogaki, and Henrik Wann Jensen. 2008. Progressive Photon Mapping. 27, 5 (Dec. 2008), 130:1–130:8. https://doi.org/10/cn8h39