Abstract

A new semigraphical method of integration which is peculiarly suited to the evaluation of certain integrals which appear with great frequency in color specification work is introduced and discussed. Previous integration methods either require the use of special equipment or are extremely laborious and time consuming especially if the thirty ordinate or 100 ordinate methods are used. The present method usually reduces the number of ordinates to 8 and allows the use of either 4, 2, or even one ordinate in certain calculations. For essentially linear reflectance curves the tristimulus values can be read from the spectrophotometric curve directly. The saving in time is marked: The accuracy is sufficient for most industrial purposes.

© 1946 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Spectrophotometric and Colorimetric Determination of the Colors of the TCCA Standard Color Cards

Genevieve Reimann, Deane B. Judd, and Harry J. Keegan
J. Opt. Soc. Am. 36(3) 128-159 (1946)

Universal, Digital Tristimulus Integrator*

W. E. White and D. L. MacAdam
J. Opt. Soc. Am. 47(7) 605-611 (1957)

A Device to Facilitate the Reading of Spectrophotometric Curves†

Genevieve Reimann and Earl J. Carmine
J. Opt. Soc. Am. 36(4) 235-236 (1946)

References

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
Login to access OSA Member Subscription

Cited By

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
Login to access OSA Member Subscription

Figures (3)

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
Login to access OSA Member Subscription

Tables (13)

You do not have subscription access to this journal. Article tables 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
Login to access OSA Member Subscription

Equations (18)

You do not have subscription access to this journal. Equations 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
Login to access OSA Member Subscription