Abstract
An interesting alternative to traditional geometry based rendering is Light Field Rendering [1,2]. A camera gantry is used to acquire authentic imagery and detailed novel views are synthetically generated from unknown viewpoints. The drawback is the significant data on disk.
Moving from static images, a walkthrough or a camera walk through the implied virtual world is often desirable but the repeated access of the large data makes the task increasingly difficult. We note that although potentially infinite walkthroughs are possible, for any given path, only a subset of the previously stored light field is required. Our prior work [3] exploited this and reduced the main memory requirement. However, considerable computational burden is encountered in processing even this reduced subset. This negatively impacts real-time rendering.
In this paper, we subdivide the image projection plane into “cells,” each of which gets all its radiance information from the cached portions of the light field at select “nodal points.” Once these cells are defined, the cache is visited systematically to find the radiance efficiently. The net result is real-time camera walks.
This is a preview of subscription content, log in via an institution.
Buying options
Tax calculation will be finalised at checkout
Purchases are for personal use only
Learn about institutional subscriptionsPreview
Unable to display preview. Download preview PDF.
References
Levoy, M., Hanrahan, P.: Light field rendering. In: SIGGRAPH 1996: Proceedings of the 23rd annual conference on Computer graphics and interactive techniques, pp. 31–42. ACM Press, New York (1996)
Gortler, S.J., Grzeszczuk, R., Szeliski, R., Cohen, M.F.: The lumigraph. In: SIGGRAPH 1996: Proceedings of the 23rd annual conference on Computer graphics and interactive techniques, pp. 43–54. ACM Press, New York (1996)
Pandey, A., Choudhury, B., Chandran, S.: Efficient lightfield based camera walk. In: Fourth Indian Conference on Computer Vision, Graphics and Image Processing ICVGIP, pp. 302–307 (2004)
Debevec, P., Gortler, S.: Image-based modeling and rendering. In: SIGGRAPH 1998 Course Notes. ACM SIGGRAPH, Addison Wesley, Reading (1998)
Shum, H.Y., Wang, L., Chai, J.X., Tong, X.: Rendering by Manifold Hopping. International Journal of Computer Vision 50, 185–201 (2002)
Chen, S.E.: Quicktime VR: an image-based approach to virtual environment navigation. In: SIGGRAPH 1995: Proceedings of the 22nd annual conference on Computer graphics and interactive techniques, pp. 29–38. ACM Press, New York (1995)
Unger, J., Wenger, A., Hawkins, T., Gardner, A., Debevec, P.: Capturing and rendering with incident light fields. In: EGRW 2003: Proceedings of the 14th Eurographics workshop on Rendering, Aire-la-Ville, Switzerland, Switzerland, Eurographics Association, pp. 141–149 (2003)
Shum, H.Y., He, L.W.: Rendering with concentric mosaics. In: SIGGRAPH 1999: Proceedings of the 26th annual conference on Computer graphics and interactive techniques, pp. 299–306. ACM Press, New York (1999)
Isaksen, A., McMillan, L., Gortler, S.J.: Dynamically reparameterized light fields. In: SIGGRAPH 2000: Proceedings of the 27th annual conference on Computer graphics and interactive techniques, pp. 297–306. ACM Press, New York (2000)
Buehler, C., Bosse, M., McMillan, L., Gortler, S.J., Cohen, M.F.: Unstructured lumigraph rendering. In: SIGGRAPH 2001: Proceedings of the 28th annual conference on Computer graphics and interactive techniques, pp. 425–432. ACM Press, New York (2001)
Adelson, E.H., Bergen, J.R.: The Plenoptic Function and the Elements of Early Vision. In: Computational Modeling of Vision Processing, MIT Press, Cambridge (1991)
Sloan, P.P., Cohen, M.F., Gortler, S.J.: Time critical lumigraph rendering. In: SI3D 1997: Proceedings of the 1997 symposium on Interactive 3D graphics, p. 17. ACM Press, New York (1997)
Sharma, P., Parashar, A., Banerjee, S., Kalra, P.: An Uncalibrated Lightfield Acquisition System. In: Third Indian Conference on Computer Vision, Graphics and Image Processing ICVGIP, pp. 25–30 (2002)
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2006 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Choudhury, B., Singla, D., Chandran, S. (2006). Real-Time Camera Walks Using Light Fields. In: Kalra, P.K., Peleg, S. (eds) Computer Vision, Graphics and Image Processing. Lecture Notes in Computer Science, vol 4338. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11949619_29
Download citation
DOI: https://doi.org/10.1007/11949619_29
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-68301-8
Online ISBN: 978-3-540-68302-5
eBook Packages: Computer ScienceComputer Science (R0)