Repository logo
 

A CARTOGRAPHIC OPTICAL CHARACTER RECOGNITION SYSTEM

Date

1977-05

Journal Title

Journal ISSN

Volume Title

Publisher

ORCID

Type

Degree Level

Masters

Abstract

This thesis describes an Optical Character Recognition system for use in a cartographic application. The system is primarily intended to recog-nize and digitize both machine printed navigational chart sounding values and hand-printed field sheet sounding values. The system consists of a precision X-Y flatbed transport, a vidicon camera, a PDP 8/e minicomputer, an interactive display console and asso-ciated software and hardware. After investigating numerous recognition algorithms, three were finally chosen to be included in the system. The final recognition deci-sion was decided by a majority vote. An interactive sounding editing capa-bility was included so that 'unrecognized' soundings could be input manually by the program operator. The complexity of the problem necessitated the construction of sophis-ticated hardware for both the X-Y transport and the vidicon camera. As well, complete input and output software routines were included to make the system fully integrated. Experimental results are given for the system. This research was supported by the United States Naval Oceanographic Office.

Description

Keywords

Citation

Degree

Master of Science (M.Sc.)

Department

Electrical Engineering

Program

Advisor

Committee

Part Of

item.page.relation.ispartofseries

DOI

item.page.identifier.pmid

item.page.identifier.pmcid