ANSI AIIM TR26-2000 pdf download Resolution as it Relates to Photographic and Electronic Imaging
1.1 Scope Resolution became an important image quality factor centuries ago when optical systems were first used to look at the stars. It was used to measure an optical system’s ability to separate two closely spaced objects (e.g., stars). It was thought that if images of these objects were separated, then the information they conveyed to an observer would not be ambiguous. Since then, resolution has proven to be a useful tool for evaluating the image quality performance of imaging hardware and media. Electronic image management (EIM) applications have begun to refer to the term resolution as the sampling interval of a scanner or the addressable points on a display or printer.
Therefore, the EIM definition may be half or less than expected when using the definition for classical resolution.
1.2 Purpose The combined use of photographic and electronic technologies in today’s imaging systems has made the use and interpretation of the term resolution complex. In order for resolution to effectively maintain its past utility, a basic understanding of resolution and its various interpretations is required. This technical report helps clarify the difference in the use of the term resolution in photographic and digital systems.
2 References All standards, reports, and publications are subject to revision. When the following documents are superseded by an approved revision, that revision may apply.
ANSVAI I M MS23-1 998, Recommended pracfice – Producfion, inspecfion, and qualify assurance of firsfgenerafion, silver microforms of documenfs
ANSMSO 3334-1 991 (ANSVAIIM MS51 -1 991 ), Micrographics – IS0 resolufion fesf charí no. 2 – Descripfion and use
2.1 Referenced publications ANSVAIIM TR2-1 998, Technical reporí for informafion and image managemenf – Glossary of documenf fechnologies
2.2 Related publications
Alexander, George A. ”Digital halftones: Guide to improving quality”, The Seybolú Reporf on Deskfop Publishing 3( 1 O).
Ulichney, Robert. Digifal Halffoning. Cambridge, MA: MIT Press, 1 987.
Dainty, J.C. & Shaw, R. Image Science. London: Academic Press, 1 975.
3 Definitions
The following definitions apply to terms that appear in this technical report. Additional terms are defined in ANSVAIIM TR2.
3.1 American Standard Code for Information Interchange (ASCII): American National Standard Binary-coding scheme consisting of 1 28 eight-bit patterns (7-bits plus a parity check bit) for printable characters and control of equipment functions.