Figures of merit for color scanners

Author

Sharma, Gaurav ; Trussell, H. Joel

Author_Institution

Xerox Corp., Webster, NY, USA

Volume

6

Issue

7

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

990

Lastpage

1001

Abstract

In the design and evaluation of color scanners and cameras, it is useful to have a single figure of merit that closely agrees with perceived color accuracy. In the past, several measures of goodness for color scanning filters have been proposed to fulfil such a requirement. Most of the proposed measures have had shortcomings in that they are either based on error metrics in color spaces that are not perceptually uniform, or in that they do not take into account the effects of measurement noise. An extension of the most promising measure, based on linearized CIELAB space, is proposed to obtain a new figure of merit that has a high degree of perceptual relevance and also accounts for the varying noise performance of different filters. The paper also provides a common framework for the different figures of merit and a comprehensive comparison of their computational complexity and reliability

Keywords

cameras; colorimetry; computational complexity; error analysis; image colour analysis; image scanners; noise; optical filters; visual perception; color cameras; color scanners; color scanning filters; color spaces; computational complexity; error metrics; figures of merit; human visual system; linearized CIELAB space; measurement noise; noise performance; perceived color accuracy; reliability; visual perception; Cameras; Colored noise; Extraterrestrial measurements; Filters; Humans; Magneto electrical resistivity imaging technique; Noise figure; Noise measurement; Q factor; Visual system;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/83.597274

Filename

597274