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A system for editing sky images using an image database

Published: 12 December 2011 Publication History

Abstract

Synthetic images of outdoor scenes generated by computer graphics usually contain the sky as background. The appearance of the sky plays an important role in enhancing the reality of scenes. In this paper, we propose an intuitive and interactive system for synthesizing sky images that can reflect the user's intention. Our system consists of two steps. The first step is a sky generation step. The luminance distribution and colors of the sky are generated using our intuitive user interface. The second step is a cloud composition step. We have prepared a database of photographs of real clouds. Our system searches the database for cloud photographs that are suitable for the synthesized sky. The user selects the clouds in the search results and they are composited into the sky image. By using our system, the user can easily generate desired sky images.

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References

[1]
Dobashi, Y., Nishita, T., Kaneda, K., and Yamashita, H. 1994. A fast display method of sky color using basis functions. In Pacific Graphics'94, 194--208.
[2]
Levin, A., Lischinski, D., and Weiss, Y. 2004. Colorization using optimization. In Proceedings of SIGGRAPH 2004, 689--694.
[3]
Perez, R., Seals, R., and Michalsky, J. 1993. All-weather model for sky luminance distribution-preliminary configuration and validation. Solar Energy 50, 3, 235--245.
[4]
Perez, P., Gangnet, M., and Blake, A. 2003. Poisson image editing. In Proceedings of SIGGRAPH 2003, 313--318.
[5]
Tao, L., Yuan, L., and Sun, J. 2009. Attribute-based sky image search. In Proceedings of SIGGRAPH 2009, 1--5.

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    cover image ACM Conferences
    SA '11: SIGGRAPH Asia 2011 Sketches
    December 2011
    87 pages
    ISBN:9781450311380
    DOI:10.1145/2077378
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    New York, NY, United States

    Publication History

    Published: 12 December 2011

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    Author Tags

    1. cloud
    2. image processing
    3. sky

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    SA '11
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    SA '11: SIGGRAPH Asia 2011
    December 12 - 15, 2011
    Hong Kong, China

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    Overall Acceptance Rate 178 of 869 submissions, 20%

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