versión On-line ISSN 1870-9044
Polibits no.44 México jul./dic. 2011
Optical Parameter Extraction using Differential Evolution Rendering in the Loop
Mauricio Olguin Carbajal1, Ricardo Barrón Fernández2, and José Luis Oropeza Rodríguez2
1 Postgraduate department, Centro de Innovacion y Desarrollo Tecnológico en Computo (CIDETEC), IPN, Mexico City, Mexico (email: email@example.com).
Manuscript received May 26, 2011.
Manuscript accepted for publication August 24, 2011.
Image synthesis is highly dependent on rendering algorithm and optical properties of scenario objects. The goal of this work is to develop a methodology to obtain some illumination parameters of a real scenario represented by an acquired image, and use these parameters for a virtual scenario rendering with the same objects as the original. The proposed methodology consists, first, in acquiring an image of the working scenario, and by using a DE (Differential Evolution) algorithm to render images that gradually approximate to the real acquired image, by some virtual scenario parameter modification based on the DE optimization. We call it "ED Rendering in the loop". Finally we use the obtained parameters to render an image to compare it with similar methods.
Key words: Differential evolution, rendering, images, loop, illumination, model.
 Y. Willems P. Dutre, F. Suykens, Optimized Monte Cario path generation using genetic algorithms, Report CW267, May 1998. [ Links ]
 Srinivasa G. Narasimhan, Mohit Gupta, Craig Donner, Ravi Ramamoorthi, Shree K. Nayar, HenrikWann Jensen, "Acquiring Scattering Properties of Participating Media by Dilution," ACM Transactions on Graphics (SIGGRAPH'2006), 2006. [ Links ]
 Wai Kit Addy Ngan, Acquisition and Modeling of Material Appearance, S.M., Massachusetts Institute of Technology, Phd. Thesis. 2004. [ Links ]
 E.G. Finsy, and J. Joosten, "Maximum entropy inversion of static light scattering data for the particle size distribution by number and volume," Advances in measurements and control of colloidal processes, ButterworthHeineman, Ch. 30, 1991. [ Links ]
 H. Jensen, S. Marschner, M. Levoy, and P. Hanrahan, "A practical model for subsurface light transport," in Proc. SIGGRAPH 01, 2001, pp. 511518. [ Links ]
 B. Sun, R. Ramamorthi, S.G. Narasimhan, and S.K. Nayar, "A practical analytic single scattering model for real time rendering," ACM Trans. on Graphics (SIGGRAPH) 24, 3, 10401049, 2005. [ Links ]
 Fuch E. and Jaffe J. S. "Thin laser light sheet microscope for microbial oceanography," OPTICS EXPRESS 10 (2), 145154, 2002. [ Links ]
 R. Furukawa, H. Kawasaki, K. Ikeuchi, and M. Sakauchi, "Appearance based object modeling using texture database: acquisition, compression and rendering," in Proceedings of the 13th Eurographics workshop on Rendering, Eurographics Association, 2002, pp. 257266. [ Links ]
 Gero Müller, Gerhard H. Bendels, Reinhard Klein, "Rapid Synchronous Acquisition of Geometry and Appearance of Cultural Heritage Artefacts," in 6th International Symposium on Virtual Reality, Archaeology and Cultural Heritage VAST, 2005. [ Links ]
 Wojciech Matusik, Hanspeter Pfister, Remo Ziegler, Addy Ngan, and Leonard McMillan, "Acquisition and Rendering of Transparent and Refractive Objects," in Thirteenth Eurographics Workshop on Rendering, 2002. [ Links ]
 G. Müller, J. Meseth, M. Sattler, R. Sarlette and R. Klein, Acquisition, Synthesis and Rendering of Bidirectional Texture Functions, EUROGRAPHICS 2004 State of The Art Report, 2004. [ Links ]
 James S. Painter, John K. Kawai, and Michael F. Cohen, Radioptimization goal based rendering, 1993. [ Links ]
 Jitendra Malik, Yizhou Yu, Paul Debevec and Tim Hawkins, Inverse global illumination, Recovering reflectance models of real scenes from photographs, 1999. [ Links ]
 Yizhou Yu. Modeling and editing real scenes with imagebased techniques, 2000. [ Links ]
 Isaac Rudomin Goldberg, Joaquin Elorza Tena, An interactive system for solving inverse illumination problems using genetic algorithms, 1997. [ Links ]
 Brian Smits, James Arvo, Chris Schoeneman, Julie Dorsey, and Donald Greenberg, "Painting with light," in SIGGRAPH '93 Proceedings of the 20th annual conference on Computer graphics and interactive techniques, July 1993. [ Links ]