Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23066
Title: Estimation of optoelectronic conversion functions of imaging devices without using gray samples
Authors: Shen, HL
Xin, JH 
Yang, DX
Lou, DW
Keywords: Color characterization
Color imaging
Color measurement
Input devices
Linear model
OECF
Issue Date: 2008
Publisher: John Wiley & Sons
Source: Color research & applications, 2008, v. 33, no. 2, p. 135-141 How to cite?
Journal: Color research & applications 
Abstract: In the colorimetric or spectral characterization of imaging devices such as digital cameras and scanners, the optoelectronic conversion functions (OECFs) are traditionally obtained from standard gray samples. However, these gray samples are sometimes unavailable when conducting color characterization. We propose an efficient method for recovering OECFs by using nongray samples, based on the finite-dimensional modeling of spectral reflectance and the second-order polynomial fitting of OECFs. Experimental results indicate that the accuracy of the estimated OECFs are close to those obtained from gray samples, with the correlation coefficients R2 larger than 0.995. The proposed method should be useful in colorimetric and spectral characterization of imaging devices by using custom-made color samples in textile or other industries, when standard gray samples are not available and not easily made.
URI: http://hdl.handle.net/10397/23066
ISSN: 0361-2317
DOI: 10.1002/col.20386
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