|
Illumination estimation via thin-plate spline interpolation |
JOSA A, Vol. 28, Issue 5, pp. 940-948 (2011)
http://dx.doi.org/10.1364/JOSAA.28.000940
Enhanced HTML 
Acrobat PDF (479 KB)
Abstract
Thin-plate spline interpolation is used to interpolate the chromaticity of the color of the incident scene illumination across a training set of images. Given the image of a scene under unknown illumination, the chromaticity of the scene illumination can be found from the interpolated function. The resulting illumination-estimation method can be used to provide color constancy under changing illumination conditions and automatic white balancing for digital cameras. A thin-plate spline interpolates over a nonuniformly sampled input space, which in this case is a training set of image thumbnails and associated illumination chromaticities. To reduce the size of the training set, incremental k medians are applied. Tests on real images demonstrate that the thin-plate spline method can estimate the color of the incident illumination quite accurately, and the proposed training set pruning significantly decreases the computation.
© 2011 Optical Society of America
OCIS Codes
(100.2000) Image processing : Digital image processing
(330.0330) Vision, color, and visual optics : Vision, color, and visual optics
(330.1690) Vision, color, and visual optics : Color
(330.1710) Vision, color, and visual optics : Color, measurement
(330.1720) Vision, color, and visual optics : Color vision
ToC Category:
Vision, Color, and Visual Optics
History
Original Manuscript: October 6, 2010
Revised Manuscript: January 29, 2011
Manuscript Accepted: March 16, 2011
Published: April 29, 2011
Virtual Issues
Vol. 6, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Lilong Shi, Weihua Xiong, and Brian Funt, "Illumination estimation via thin-plate spline interpolation," J. Opt. Soc. Am. A 28, 940-948 (2011)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-5-940
You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Log in to access OSA Member Subscription
Related Journal Articles 
- Relational color constancy in achromatic and isoluminant images (JOSAA)
- Invariant cone-excitation ratios may predict transparency (JOSAA)
- Estimating the scene illumination chromaticity by using a neural network (JOSAA)
- Colorimetry for CRT displays (JOSAA)
- Color appearance in the entire visual field: color zone map based on the unique hue component (JOSAA)
Related Conference Papers
- Correcting Color Images for Stray-Light Effects by Computationally Solving an Inverse Problem via Selected-Ordinate Image (SORI) Processing
- Fiber Optic Full Color Synthesizer
- Illumination sources based on multiple light-emitting diodes
- White Light Emissions from Complex Core-Shell Nanoparticles
- Neural Network for the Digital Cleaning of an Oil Painting
« Previous Article | Next Article »
OSA is a member of 