Bergische Universität Wuppertal
Fachbereich Mathematik und Naturwissenschaften
Angewandte Mathematik - Numerische Analysis (AMNA)

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Matthias Ehrhardt

Der Bokeh-Effekt

Handys im Tiefenrausch

Leerraum

Materialien für Interessierte zum Vortrag am

Die Zielgruppe sind Schüler ab der 11. Klasse.

Leerraum


Das MATEMA-Logo (ein Luchs, copyright by Ulf Grenzer)


Beschreibung

Viele benutzen beim Fotografieren mit ihrem Smartphone den sog. Bokeh-Effekt. In diesem Vortrag werden die mathematischen Hintergründe dieses Bildfilters für den Unschärfebereich erläutert. Es ist ein weiteres Beispiel wie angewandte Mathematik (unbemerkt) in unserem Alltag steckt.

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Das MATEMA-Logo (ein Luchs, copyright by Ulf Grenzer)

Referenzen für den Vortrag

  1. S. Bae, F. Durand, Defocus magnification, Comput. Graph. Forum, 26(3) (2007), 571-579.
  2. M. Bertalmio, P. Fort, D. Sanchez-Crespo, Real-time, accurate depth of field using anisotropic diffusion and programmable graphics cards, in: 3D data processing, visualization and transmission (2004), 767-773.
  3. G. R. Bradski, Conputer vision face tracking for use in a perceptual user interface, Intel Technology Journal 1998.
  4. H. Badri, H. Yahia, D. Aboutajdine, Fast edge-aware processing via first order proximal approximation, IEEE T. Vis. Comput. Gr. 21(6) (2015), 743-755.
  5. R.L. Cook, Stochastic sampling in computer graphics, ACM T. Graphic., 5(1) (1986), 51-72.
  6. A. Elgammal, C. Muang, D. Hu, Skin detection, in: Encyclopedia of Biometrics, Springer, 2015, pp. 1407-1414.
  7. D. Eigen, C. Puhrsch, R. Fergus, Depth map prediction from a single image using a multi-scale deep network, Adv. Neur. In. 27 (2014), 2366-2374.
  8. N. Friedrich, O. Lobachev, M. Guthe, Faking It: Simulating Background Blur in Portrait Photography using a Coarse Depth Map Estimation from a Single Image, Conference: WSCG 2016, Pilsen, Czech Republic, Volume: CSRN 2602.
  9. J. Göransson, A. Karlsson, Practical post-process depth of field, GPU Gems 3 (2007), 583-606.
  10. Y. Li, J. Sun, C.-K. Tang, H.-Y. Shum. Lazy snapping, ACM T. Graphic. 23(3) (2004), 303-308.
  11. X. Liu, J. Rokne, Bokeh rendering with a physical lens, In PG'12 Short proc. EG, 2012.
  12. D. Lanman, R. Raskar, G. Taubin, Modeling and synthesis of aperture effects in cameras, In. In COMPAESTH '08. EG, 2008.
  13. T. McGraw. Fast bokeh effects using low-rank linear filters, Visual Comput. 31(5):601-611, 2014.
  14. J. Moersch, H.J. Hamilton, Variable- sized, circular bokeh depth of field effects, in: Graphics Interface '14. CIPS, 2014, pp. 103-107.
  15. L. McIntosh, B.E. Riecke, S. DiPaola, Efficiently simulating the bokeh of polygonal apertures in a post-process depth of field shader, Comput. Graph. Forum, 31(6) (2012), 1810-1822.
  16. H.H. Nasse, Depth of field and bokeh, Carl Zeiss camera lens division report, 2010.
  17. M. Potmesil, I. Chakravarty, A lens and aperture camera model for synthetic image generation, SIGGRAPH Comput. Graph. 15(3) (1981), 297-305.
  18. A. Saxena, S.H. Chung, A.Y. Ng, 3-D depth reconstruction from a single still image, Int. J. Comput. Vision 76(1) (2007), 53-69.
  19. V.P. Sivokon, M.D. Thorpe, Theory of bokeh image structure in camera lenses with an aspheric surface, Opt. Eng. 53(6) (2014), 065103.
  20. J. Wu, C. Zheng, X. Hu, F. Xu, Rendering realistic spectral bokeh due to lens stops and aberrations, Visual Comput., 29(1) (2012), 41-52.
  21. C.-Y. Yan, M.-C. Tien, J.-L. Wu, Interactive background blurring, in: MM '09. ACM, 2009, pp. 817-820.
  22. T.-T. Yu, Depth of field implementation with OpenGL, J. comput. sci. coll. 20(1) (2004), 136-146.
  23. W. Zhang, W.-K. Cham, Single-image refocusing and defocusing, IEEE T. Image Process. 21(2) (2012), 873-882.
  24. X. Zhu, S. Cohen, S. Schiller, P. Milanfar, Estimating spatially varying defocus blur from a single image, IEEE T. Image Process. 22(12) (2013), 4879-4891.


University of Wuppertal
Faculty of Mathematics and Natural Sciences
Department of Mathematics
Applied Mathematics & Numerical Analysis Group

Last modified: 06/16/2005 16:16:24   Disclaimer   ehrhardt@math.uni-wuppertal.de