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http://hdl.handle.net/10397/6561
| Title: | Correcting cross-media instrument metamerism for reflectance estimation in multispectral imaging | Authors: | Shen, HL Weng, CW Wan, HJ Xin, JH |
Issue Date: | 1-Apr-2011 | Source: | Journal of the Optical Society of America. A, Optics, image science, and vision, 1 Apr. 2011, v. 28, no. 4, p. 511-516 | Abstract: | In multispectral imaging, the color accuracy of spectral reflectance estimation degrades significantly if the medium of test samples is different from that of calibration samples. This occurs mainly for two reasons, i.e., the different characteristics of spectral reflectances and the different measurement principles between an imaging system and a spectrophotometer. In this paper, this problem is referred to as cross-media instrument metamerism. We propose to correct it by using calibration samples from a standard color chart and a limited number of tuning samples with a target medium as a priori knowledge. The reflectance transform is computed by using both calibration and tuning samples, and the metamerism transform is calculated by modeling the correlation of camera responses between neighboring imaging channels. Experimental results show that the proposed method produces satisfactory spectral and colorimetric accuracy in reflectance estimation. The method could be deployed in practical applications when the available samples of certain media are inadequate for accurate reflectance estimation in a multispectral imaging system. | Keywords: | Calibration Color Estimation Imaging systems |
Publisher: | Optical Society of America | Journal: | Journal of the Optical Society of America. A, Optics, image science, and vision | ISSN: | 1084-7529 | EISSN: | 1520-8532 | DOI: | 10.1364/JOSAA.28.000511 | Rights: | © 2011 Optical Society of America. This paper was published in Journal of the Optical Society of America A and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-28-4-511. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. |
| Appears in Collections: | Journal/Magazine Article |
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| Shen_Cross-media_Instrument_Metamerism.pdf | 324.72 kB | Adobe PDF | View/Open |
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