Efficient relighting of RBF-based illumination adjustable images

Tze Yiu Ho; Chi Sing Leung; Ping Man Lam; Tien-Tsin Wong

doi:10.1109/TNN.2009.2032765

Efficient relighting of RBF-based illumination adjustable images

Tze Yiu Ho, Chi Sing Leung, Ping Man Lam, Tien-Tsin Wong

Research output: Contribution to journal › Article › Research › peer-review

2 Citations (Scopus)

Abstract

An illumination adjustable image (IAI) contains a large number of prerecorded images under various light directions. Relighting a scene under complicated lighting conditions can be achieved from the IAI. Using the radial basis function (RBF) approach to represent an IAI is proven to be more efficient than using the spherical harmonic approach. However, to represent high-frequency lighting effects, we need to use many RBFs. Hence, the relighting speed could be very slow. This brief investigates a partial reconstruction scheme for relighting an IAI based on the locality of RBFs. Compared with the conventional RBF and spherical harmonics (SH) approaches, the proposed scheme has a much faster relighting speed under the similar distortion performance.

Original language	English
Article number	5282524
Pages (from-to)	1987-1993
Number of pages	7
Journal	IEEE Transactions on Neural Networks
Volume	20
Issue number	12
DOIs	https://doi.org/10.1109/TNN.2009.2032765
Publication status	Published - Dec 2009
Externally published	Yes

Keywords

Illumination adjustable image (IAI)
Lightmap
Plenoptic illumination function (PIF)
Radial basis function (RBF)

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10.1109/TNN.2009.2032765

Cite this

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abstract = "An illumination adjustable image (IAI) contains a large number of prerecorded images under various light directions. Relighting a scene under complicated lighting conditions can be achieved from the IAI. Using the radial basis function (RBF) approach to represent an IAI is proven to be more efficient than using the spherical harmonic approach. However, to represent high-frequency lighting effects, we need to use many RBFs. Hence, the relighting speed could be very slow. This brief investigates a partial reconstruction scheme for relighting an IAI based on the locality of RBFs. Compared with the conventional RBF and spherical harmonics (SH) approaches, the proposed scheme has a much faster relighting speed under the similar distortion performance.",

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AU - Leung, Chi Sing

AU - Lam, Ping Man

AU - Wong, Tien-Tsin

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AB - An illumination adjustable image (IAI) contains a large number of prerecorded images under various light directions. Relighting a scene under complicated lighting conditions can be achieved from the IAI. Using the radial basis function (RBF) approach to represent an IAI is proven to be more efficient than using the spherical harmonic approach. However, to represent high-frequency lighting effects, we need to use many RBFs. Hence, the relighting speed could be very slow. This brief investigates a partial reconstruction scheme for relighting an IAI based on the locality of RBFs. Compared with the conventional RBF and spherical harmonics (SH) approaches, the proposed scheme has a much faster relighting speed under the similar distortion performance.

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KW - Plenoptic illumination function (PIF)

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Efficient relighting of RBF-based illumination adjustable images

Abstract

Keywords

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