Transmission rate reduction in monitoring two-dimensional moving images in factory automation

Author

Asada, Hideyuki ; Rabou, Nabil Abd ; Keda, Hiroaki I. ; Shimodaira, Yoshifumi ; Yoshida, Hirofumi

Author_Institution

Shizuoka Nippon Electr. Corp., Kakegawa, Japan

Volume

2

fYear

1997

fDate

5-9 Oct 1997

Firstpage

912

Abstract

This paper describes transmission rate reduction accomplished on the basis of the subjective evaluation of images in the NTSC system when two-dimensional moving images are being monitored in factory automation. A new transmission system has been proposed on the basis of the subjective evaluation, and the transmission rate has been reduced by processing a two-dimensional moving image using more simple and inexpensive digital NTSC picture encoding and decoding circuits than those for MPEG2. Utilizing the proposed transmission system, the viewer can watch and process digital image data on line in a location far from the camera built in a machine. In addition, the proposed system transmits camera shots at a reduced transmission rate utilizing both edge-emitting LEDs (ELEDs) and single-mode (SM) optical fibers of up to 10 km in length without any repeaters. As an application to factory automation, the proposed system could satisfactorily transmit a moving image of a cutting tool tip in the laser cutting machine cutting a metal plate

Keywords

cutting; factory automation; image coding; image processing; laser beam machining; light emitting diodes; monitoring; optical fibre communication; NTSC system; cutting tool tip; digital image data processing; edge-emitting LED; factory automation; laser cutting machine; metal plate cutting; picture decoding circuits; picture encoding; single-mode optical fibers; transmission rate reduction; transmission system; two-dimensional moving images monitoring; Circuits; Computerized monitoring; Decoding; Digital cameras; Digital images; Image coding; Light emitting diodes; Manufacturing automation; Samarium; Watches;

fLanguage

English

Publisher

ieee

Conference_Titel

Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE

Conference_Location

New Orleans, LA

ISSN

0197-2618

Print_ISBN

0-7803-4067-1

Type

conf

DOI

10.1109/IAS.1997.628970

Filename

628970