Programmer's Manual for the CHAP Line-Drawing Processing Language (Revised).

Abstract

This report describes CHAP, a computer language for processing line drawings represented in terms of the 8-direction chain code. The language consists of a set of FORTRAN subroutines, most of which are machine independent. The subroutines may be called by a user program to accomplish specific line-drawing processing tasks. The chain data is stored in packed (machine-dependent) form and is unpacked for processing. The report lists all currently available CHAP subroutines and provides all necessary information for a CHAP programmer. Specific information for different machine implementations are given in the appendices. Implementations exist for IBM 360, UNIVAC 1108/1110, CDC 6600, and ADAGE AGT 30/130. Versions for other machines can be readily generated. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1977
Accession Number
ADA049710

Entities

People

  • H. Freeman
  • J. Paolicelli
  • M. Potmesil

Organizations

  • Rensselaer Polytechnic Institute

Tags

DTIC Thesaurus Topics

  • Air Force
  • Algorithms
  • Arrays
  • Assembly Languages
  • Autocorrelation
  • Computer Languages
  • Computers
  • Directional
  • Grids
  • Identification
  • Image Processing
  • Indicators
  • Information Processing
  • Information Science
  • Language
  • New York
  • Procedures (Computers)

Fields of Study

  • Computer science

Readers

  • Computer Science.