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Light source estimation using segmented HDR images

Published: 05 August 2007 Publication History

Abstract

To achieve seamless integration of the real scene with virtual objects, we need to obtain accurate illumination condition of the real scene. Using HDRI(High Dynamic Range Image) we can acquire and control real world illumination information. There are various intensity levels of light sources in a HDRI; some regions are very bright and others are not. Bright regions contain much more lighting information than the other regions. Thus in this paper we propose a light source estimation method by using the ratio of intensity of radiation from segmented HDR images which are divided by characteristics of histogram value. This paper describes three mains steps performed in the research. First, we segment an image efficiently; second, we analyze the distribution of intensity of radiation. Finally, we estimate light sources from segmented HDR images by using the ratio of intensity of radiation.

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References

[1]
Debevec, P. 2005. A median cut algorithm for light probe sampling. In Poster of SIGGRAPH 2005, ACM.
[2]
J. Klir, G., and Yuan, B. 2002. Fuzzy Sets and Fuzzy Logic Thory and Applications. Prentice Hall of India.

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  • (2011)Robust point matching in HDRI through estimation of illumination distributionProceedings of the 33rd international conference on Pattern recognition10.5555/2039976.2040003(226-235)Online publication date: 31-Aug-2011

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cover image ACM Conferences
SIGGRAPH '07: ACM SIGGRAPH 2007 posters
August 2007
197 pages
ISBN:9781450318280
DOI:10.1145/1280720
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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Association for Computing Machinery

New York, NY, United States

Publication History

Published: 05 August 2007

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  1. Fuzzy-C mean
  2. HDRI

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Cited By

View all
  • (2011)Robust point matching in HDRI through estimation of illumination distributionProceedings of the 33rd international conference on Pattern recognition10.5555/2039976.2040003(226-235)Online publication date: 31-Aug-2011

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