@inproceedings{tobler97_hsdasr, title = "A Hierarchical Subdivision Algorithm for Stochastic Radiosity Methods", author = "Robert F. Tobler and Alexander Wilkie and Martin Feda and Werner Purgathofer", year = "1997", abstract = "The algorithm proposed in this paper uses a stochastic approach to incrementally calculate the illumination function over a surface. By tracking the illumination function at different levels of meshing resolution, it is possible to get a measure for the quality of the current representation, and to adoptively subdivide in places with inadequate accuracy. With this technique a hierarchical mesh that is based on the stochastic evaluation of global illumination is generated.", month = jun, publisher = "Springer Wien", organization = "Eurographics", address = "St. Etienne, France", editor = "Julie Dorsey and Philipp Slusallek", booktitle = "Eurographics Rendering Workshop 1997", pages = "193--204", keywords = "radiosity, monte carlo methods", URL = "https://www.cg.tuwien.ac.at/research/publications/1997/tobler97_hsdasr/", } @techreport{Tobler-1996-HSA, title = "A Hierarchical Subdivision Algorithm for Stochastic Radiosity Methods", author = "Robert F. Tobler and Martin Feda and Werner Purgathofer and Alexander Wilkie", year = "1996", abstract = "Stochastic radiosity methods have become a standard tool for generating global illumination solutions for very large scenes. Unfortunately, these methods need scene descriptions that are premeshed to a very fine resolution, in order to compute an adequate solution of the global illumination. The algorithm proposed in this paper uses a stochastic Galerkin approach to incrementally calculate the illumination function. By tracking the illumination function at different levels of resolution it is possible to get a measure for the quality of the representation, and thus adaptively subdivide in places with inadequate accuracy. With this technique a hierarchical mesh is generated, that is based on the stochastic evaluation of global illumination.", month = apr, number = "TR-186-2-96-14", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", keywords = "radiosity, stochastic, Monte Carlo, hierarchical, Galerkin, density estimation", URL = "https://www.cg.tuwien.ac.at/research/publications/1996/Tobler-1996-HSA/", } @incollection{neumann-1995-anew, title = "A New Stochastic Radiosity Method for Highly Complex Scenes", author = "L\'{a}szl\'{o} Neumann and Martin Feda and Manfred Kopp and Werner Purgathofer", year = "1995", month = aug, booktitle = "In Photorealistic Rendering Techniques", editor = "G. Sakas, P. Shirley, S. M\"{u}ller", isbn = "3540584757", publisher = "Springer", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/neumann-1995-anew/", } @inproceedings{feda-1995-red, title = "Reducing Shadow Leaks without Explicit Meshing", author = "Martin Feda and N. Kohlert", year = "1995", month = may, note = "TALK: M. Feda 30.5.1995", location = "Bratislava, Slovakia", booktitle = "Proceedings of the 11th Spring Conference on Computer Graphics", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-red/", } @inproceedings{feda-1995-visual, title = "Improving the Visual Quality of Intermediate Radiosity Images", author = "Martin Feda", year = "1995", month = may, note = "TALK: 30.5.1995", location = "Bratislava, Slovakia", booktitle = "Proceedings of the 11th Spring Conference on Computer Graphics", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-visual/", } @inproceedings{feda-1995-spee, title = "Speeding Up Progressive Radiosity by Overshooting", author = "Martin Feda", year = "1995", month = feb, note = "TALK: R. Tober", location = "Plzen, Czech Republic", booktitle = "Proceedings of the Winter School of Computer Graphics and Visualization (WSCG)", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-spee/", } @techreport{Neumann-1995-SRM, title = "The Stochastic Ray Method for Radiosity", author = "L\'{a}szl\'{o} Neumann and Werner Purgathofer and Robert F. Tobler and Attila Neumann and Pavol Elias and Martin Feda and Xavier Pueyo", year = "1995", abstract = "This paper solves the system of radiosity equations with a numerical approach rather than with a physical interpretation as most current algorithms do. Due to the high complexity of the problem for highly complex scenes, a stochastic variation of Jacobi iteration is developed which converges stochastically to the correct solution. The new method, called Stochastic Ray Method, is a significant improvement of Stochastic Radiosity. A large number of independent rays is chosen stochastically by importance sampling of the patches according to their power after the previous iteration step. They all carry an equal amount of power into random directions, thereby representing together the total energy interreflection of the entire environment in a stochastic manner. Assuming a correctly distributed initial solution, which can be reached easily, the iteration process converges quickly and reduces the error in the result faster than other stochastic radiosity approaches. The new algorithm can easily be extended to treat various phenomena which are normally rather costly to incorporate in radiosity environments: specular reflection and specular transmittance, non-diffuse emission and point light sources.", month = jan, number = "TR-186-2-95-3", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", keywords = "rendering, radiosity, stochastic, raytracing", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/Neumann-1995-SRM/", } @talk{feda-1995-car, title = "A Monte-Carlo Approach for Galerkin Radiosity", author = "Martin Feda", year = "1995", location = "University of Girona, Spain", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-car/", } @talk{feda-1995-monte, title = "Monte-Carlo Radiosity und Galerkin Radiosity zur Erzeugung photorealistischer Computerbilder", author = "Martin Feda", year = "1995", event = "Fachbereich Informatik", location = "University of Rostock, Deutschland", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-monte/", } @inproceedings{neumann-1995-the, title = "The Stochastic Ray Method for Radiosity", author = "L\'{a}szl\'{o} Neumann and Werner Purgathofer and Robert F. Tobler and Attila Neumann and Pavol Elias and Martin Feda and Xavier Pueyo", year = "1995", note = "TALK: M. Feda 13.5.1995", location = "Wien, Austria", editor = "P. Hanrahan, W. Purgathofer", booktitle = "Rendering Techniques", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/neumann-1995-the/", } @incollection{feda-1995-imp, title = "Improving Intermediate Radiosity Images Using Directional Light", author = "Martin Feda", year = "1995", booktitle = "Graphics Gems V", editor = "A. Paeth", publisher = "AP Professional", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-imp/", } @talk{feda-1995-real, title = "Realistic Image Rendering by Higher Order Radiosity", author = "Martin Feda", year = "1995", location = "University of Bristol, UK", URL = "https://www.cg.tuwien.ac.at/research/publications/1995/feda-1995-real/", } @techreport{Feda-1994-FPZ, title = "Fast Perspective Z-Buffer with Inverse Depths", author = "Martin Feda and Robert F. Tobler and L\'{a}szl\'{o} Neumann", year = "1994", abstract = "This paper presents a way to hold the depth information in Z-buffers, that allows fast incremental computation of Z-buffer depth values. The main idea is to store the inverse depth with each pixel value. The incremental depth computation can then be done with a single addition per pixel in a scanline.", month = nov, number = "TR-186-2-94-16", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", keywords = "z-buffer, optimization, rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/Feda-1994-FPZ/", } @techreport{Neumann-1994-SRM, title = "The Stochastic Ray Method for Radiosity", author = "L\'{a}szl\'{o} Neumann and Werner Purgathofer and Robert F. Tobler and Attila Neumann and Pavol Elias and Martin Feda and Xavier Pueyo", year = "1994", abstract = "THIS TECHNICAL REPORT IS OUTDATED AND HAS BEEN SUPERSEDED BY TR-186-2-95-3. This paper presents an efficient radiosity algorithm for highly complex scenes. The new iteration method, which is based on the Stochastic Shooting Method, uses ray tracing to implicitly calculate form factors. The variance in the solution is reduced by using a self-correcting, stochastically converging iteration formula. The new algorithm can be easily extended to simulate various phenomena normally not found in radiosity environments: transparency, specular reflection and point light-sources.", month = nov, number = "TR-186-2-94-17", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/Neumann-1994-SRM/", } @inproceedings{feda-1994-para, title = "Parallel Radiosity on Transputers with Low Communication Overhead", author = "Martin Feda", year = "1994", month = sep, organization = "Hungarian Academy of Science", location = "Budapest, Hungary", editor = "S. Ferenczi, P. Kacsuk", booktitle = "Proceedings of the 2nd Austro- Hungarian Workshop on Transputer Applications", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/feda-1994-para/", } @inproceedings{feda-1994-eff, title = "Efficient Realistic Image Synthesis by Parallel Monte Carlo Radiosity on Transputers", author = "Martin Feda and Werner Purgathofer", year = "1994", month = sep, publisher = "IOS Press", organization = "World Transputer Congress'94", location = "Cernobbio, Italy", booktitle = "Transputer Applications and Systems '94, Proceeding of the World Transputer Congress'94", pages = "--5.9.2005", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/feda-1994-eff/", } @article{feda-1994-med, title = "A Median Cut Algorithm for Efficient Sampling of Radiosity Functions", author = "Martin Feda and Werner Purgathofer", year = "1994", month = sep, journal = "Computer Graphics Forum, Proceedings of Eurographics '94", volume = "13", number = "3", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/feda-1994-med/", } @techreport{Purgathofer-1994-CPI, title = "A Collection of Papers of the Institute of Computer Graphics", author = "Werner Purgathofer and Martin Feda and Michael Gervautz and Robert Devide and Werner Petricek and Eduard Gr\"{o}ller and Helwig L\"{o}ffelmann and Michael Zeiller and A. Vesel", year = "1994", abstract = "This is the first technical report of the Institute of Computer Graphics at the Technical University of Vienna. It contains papers published by our research group between 1992 and 1993 providing an overview of our work during that time.", month = aug, number = "TR-186-2-94-1", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", institution = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", note = "human contact: technical-report@cg.tuwien.ac.at", keywords = "computer graphics, visualization, animation, radiosity, monte carlo, multi media, nonlinear ray tracing, coherence, collision detection", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/Purgathofer-1994-CPI/", } @inproceedings{neumann-1994-new, title = "A New Stochastic Radiosity Method for Highly Complex Scenes", author = "L\'{a}szl\'{o} Neumann and Martin Feda and Manfred Kopp and Werner Purgathofer", year = "1994", month = jun, organization = "Fifth Eurographics Workshop on Rendering", note = "TALK: W. Purgathofer 14.6.1994", booktitle = "Proceedings of Fifth Eurographics Workshop on Rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/neumann-1994-new/", } @inproceedings{purgathofer-1994-rad, title = "Radiosity for very Complex Scenes", author = "Werner Purgathofer and L\'{a}szl\'{o} Neumann and Martin Feda and Manfred Kopp", year = "1994", month = jun, organization = "International Conference on Computer Graphics ICCG", note = "TALK: W. Purgathofer 7.6.1994", location = "Comenius University of Bratislava, Slovakia", booktitle = "Proceedings of International Conference on Computer Graphics ICCG", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/purgathofer-1994-rad/", } @phdthesis{Feda-thesis, title = "Efficient Radiosity Algorithms", author = "Martin Feda", year = "1994", month = jun, address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", school = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/Feda-thesis/", } @inproceedings{feda-1994-tra, title = "Prallel Radiosity on Transputers with a Combined CSG-BRep Data Structure", author = "Martin Feda", year = "1994", month = mar, location = "Hagenberg, Austria", booktitle = "Workshop Proceedings Paragraph'94, RISC - Linz Report Series Nr. 94-17", pages = "--21.3.1994", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/feda-1994-tra/", } @article{elias-1994-mont, title = "Monte Carlo Radiosity using Piecewise Cubic Illumination Functions", author = "Pavol Elias and Martin Feda and Peter Ferschin and Werner Purgathofer", year = "1994", month = jan, journal = "Proceedings of the Winter School of Computer Graphics", note = "Plzen, Czech Republic", URL = "https://www.cg.tuwien.ac.at/research/publications/1994/elias-1994-mont/", } @inproceedings{vesel-1993-rad, title = "Radiosity Computation in Flatland using a Monte Carlo Approach with extended Rays", author = "A. Vesel and Martin Feda and Michael Gervautz and Werner Purgathofer", year = "1993", month = jun, location = "Budmerice, Slovakia", booktitle = "Proceedings of International Conference on Computer Graphics ICCG'93", pages = "181--194", URL = "https://www.cg.tuwien.ac.at/research/publications/1993/vesel-1993-rad/", } @inproceedings{feda-1993-prog, title = "Progressive Ray Refinement for Monte Carlo Radiosity", author = "Martin Feda and Werner Purgathofer", year = "1993", month = jun, publisher = "Consolidation Express Publishers", location = "Paris, Frankreich", editor = "F. Jansen, A. Chalmers, F. Sillion", booktitle = "Proceedings of the 4th Eurographics Workshop on Rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/1993/feda-1993-prog/", } @talk{feda-1993-fast, title = "Fast Radiosity by Parallelization and Algorithmic Improvements", author = "Martin Feda", year = "1993", location = "Technical University of Praha, Institute of Computer Science, Praha", URL = "https://www.cg.tuwien.ac.at/research/publications/1993/feda-1993-fast/", } @inproceedings{purgathofer-1992-schatt, title = "Schattierung von Innenr\"{a}umen mittels Computergraphik: Ein \"{U}berblick", author = "Werner Purgathofer and Martin Feda", year = "1992", month = oct, location = "Wien", booktitle = "Proceedings of the 2. \"{O}sterr. CAAD/CACD Forum 92, OCG- Schriftenreihe", URL = "https://www.cg.tuwien.ac.at/research/publications/1992/purgathofer-1992-schatt/", } @inproceedings{feda-1992-acce, title = "Accelerating Radiosity by Overshooting", author = "Martin Feda and Werner Purgathofer", year = "1992", month = may, location = "Bristol, UK", editor = "Alan Chalmers, Derek Paddon & Francois Sillion", booktitle = "Proceedings of the Third Euorgraphics Workshop on Rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/1992/feda-1992-acce/", } @inproceedings{feda-1991-eff, title = "Efficient Algorithms for Radiosity Computation", author = "Martin Feda", year = "1991", month = may, organization = "7th spring school on computer graphics", location = "Bratislava, Slovakia, CSFR", event = "7th Spring School on Computer Graphics", booktitle = "Proceedings of 7th spring school on computer graphics", URL = "https://www.cg.tuwien.ac.at/research/publications/1991/feda-1991-eff/", } @inproceedings{feda-1991-prog, title = "Progressive Refinement Radiosity on a Transputer Network", author = "Martin Feda and Werner Purgathofer", year = "1991", month = may, organization = "2nd Eurographics Workshop on Rendering", note = "TALK: M. Feda", location = "Barcelona, Spanien", event = "2nd Eurographics Workshop on Rendering", booktitle = "Proceedings of 2nd Eurographics Workshop on Rendering", URL = "https://www.cg.tuwien.ac.at/research/publications/1991/feda-1991-prog/", } @mastersthesis{feda-1989-obj, title = "Objekte-Orientiertes Ray- Tracing", author = "Martin Feda", year = "1989", month = may, note = "Diplomarbeit am Institut f\"{u}r Praktische Informatik, TU Wien", address = "Favoritenstrasse 9-11/E193-02, A-1040 Vienna, Austria", school = "Institute of Computer Graphics and Algorithms, Vienna University of Technology ", URL = "https://www.cg.tuwien.ac.at/research/publications/1989/feda-1989-obj/", }