Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

On the Information in a Microphotograph

Not Accessible

Your library or personal account may give you access

Abstract

The information concentration of a legible microphotograph made at a reduction ratio of 1200 is computed to be over 2 × 106 bits/mm2. Reasons are adduced for using a mosaic of squares having sides equal to the reciprocal of the resolving power, each being capable of assuming one of two density ranges, as a model of a high contrast material for the computation of information capacity. It follows that the information capacity is equal to the square of the resolving power. This relation gives values of information capacity in good accord with the values computed by the Jones theory. The information capacity of a Kodak High Resolution Plate is computed to be 3.25 × 106 bits/mm2. That the product of reduction ratio times quality index equals the product of resolving power times the height of the lower case e in type to be copied is verified at the high reduction ratio, and this relationship is considered useful for engineering computations involving the copying of commonly used styles of type. The use of literal charts designed on the basis of information theory is suggested for the evaluation of microcopying systems.

© 1965 Optical Society of America

Full Article  |  PDF Article
More Like This
Photooptical Storage and Processing of Information

Gilbert W. King
Appl. Opt. 4(4) 369-371 (1965)

Information Content of a Beam of Photons*

Ellen Hisdal
J. Opt. Soc. Am. 55(11) 1446-1454 (1965)

A Precision Camera for Microphotography

William M. Drumm
Appl. Opt. 4(4) 413-417 (1965)

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 Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (2)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (6)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved