Accession Number:

ADA055743

Title:

CHAP User's Manual.

Descriptive Note:

Interim rept.,

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY N Y COMPUTER RESEARCH LAB

Personal Author(s):

• Loepere,Keith P.

Report Date:

1978-05-01

Pagination or Media Count:

59.0

Abstract:

A computer representation for line drawings that has been found particularly convenient and has become widely accepted is the chain code. This representation is compact and allows most common processing functions to be performed efficiently. CHAP is a collection of FORTRAN routines designed to process chain-encoded line drawings. Routines exist in CHAP to manipulate, synthesize, analyze, and do input and output upon chains. This report is intended to serve as a users manual for CHAP. It describes the use of the CHAP routines along with other information needed to write a program utilizing the routines. A programming example is included. Author

Descriptors:

• *PROGRAMMING MANUALS
• *COMPUTER GRAPHICS
• *MAPS
• IMAGE PROCESSING
• INPUT OUTPUT PROCESSING
• FORTRAN
• FORMATS
• PATTERN RECOGNITION
• SUBROUTINES
• DRAFTING

Subject Categories:

• Cartography and Aerial Photography
• Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE