HDTV/TV compatible coding based on intrafield/interframe adaptive LOT and its characteristics

Hirohisa Jozawa, Hiroshi Watanabe, Hideo Hashimoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper describes an HDTV/TV compatible coding method based on lapped orthogonal transform (LOT). With this method, TV signals are obtained by performing N/2‐point inverse LOT to low‐order N/2 coefficients. It is shown that the LOT domain decimation reduces the aliasing noise in TV images more efficiently than the DCT‐based method. In addition, intrafield/inter‐frame adaptive LOT coding is examined. The experimental results show that the coding efficiency of intrafield/interframe adaptive LOT coding is higher than that of intrafield/interframe adaptive DCT coding. LOT coding improves the SNR by 1 dB in fixed bit rate HDTV coding at 130 Mb/s. By using LOT as a decimation filter as well as a bit rate reduction algorithm in compatible HDTV coding, the quality of the TV images and the coding efficiency are better than with the DCT‐based method.

Original languageEnglish
Pages (from-to)1-12
Number of pages12
JournalElectronics and Communications in Japan (Part I: Communications)
Volume76
Issue number4
DOIs
Publication statusPublished - 1993
Externally publishedYes

Fingerprint

High definition television

Keywords

  • compatibility
  • HDTV
  • lapped transforms
  • orthogonal transforms
  • Video coding

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

HDTV/TV compatible coding based on intrafield/interframe adaptive LOT and its characteristics. / Jozawa, Hirohisa; Watanabe, Hiroshi; Hashimoto, Hideo.

In: Electronics and Communications in Japan (Part I: Communications), Vol. 76, No. 4, 1993, p. 1-12.

Research output: Contribution to journalArticle

@article{417b8f895e6241c1bdfdb9c8fc0e6f4e,
title = "HDTV/TV compatible coding based on intrafield/interframe adaptive LOT and its characteristics",
abstract = "This paper describes an HDTV/TV compatible coding method based on lapped orthogonal transform (LOT). With this method, TV signals are obtained by performing N/2‐point inverse LOT to low‐order N/2 coefficients. It is shown that the LOT domain decimation reduces the aliasing noise in TV images more efficiently than the DCT‐based method. In addition, intrafield/inter‐frame adaptive LOT coding is examined. The experimental results show that the coding efficiency of intrafield/interframe adaptive LOT coding is higher than that of intrafield/interframe adaptive DCT coding. LOT coding improves the SNR by 1 dB in fixed bit rate HDTV coding at 130 Mb/s. By using LOT as a decimation filter as well as a bit rate reduction algorithm in compatible HDTV coding, the quality of the TV images and the coding efficiency are better than with the DCT‐based method.",
keywords = "compatibility, HDTV, lapped transforms, orthogonal transforms, Video coding",
author = "Hirohisa Jozawa and Hiroshi Watanabe and Hideo Hashimoto",
year = "1993",
doi = "10.1002/ecja.4410760401",
language = "English",
volume = "76",
pages = "1--12",
journal = "Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)",
issn = "8756-6621",
publisher = "John Wiley and Sons Inc.",
number = "4",

}

TY - JOUR

T1 - HDTV/TV compatible coding based on intrafield/interframe adaptive LOT and its characteristics

AU - Jozawa, Hirohisa

AU - Watanabe, Hiroshi

AU - Hashimoto, Hideo

PY - 1993

Y1 - 1993

N2 - This paper describes an HDTV/TV compatible coding method based on lapped orthogonal transform (LOT). With this method, TV signals are obtained by performing N/2‐point inverse LOT to low‐order N/2 coefficients. It is shown that the LOT domain decimation reduces the aliasing noise in TV images more efficiently than the DCT‐based method. In addition, intrafield/inter‐frame adaptive LOT coding is examined. The experimental results show that the coding efficiency of intrafield/interframe adaptive LOT coding is higher than that of intrafield/interframe adaptive DCT coding. LOT coding improves the SNR by 1 dB in fixed bit rate HDTV coding at 130 Mb/s. By using LOT as a decimation filter as well as a bit rate reduction algorithm in compatible HDTV coding, the quality of the TV images and the coding efficiency are better than with the DCT‐based method.

AB - This paper describes an HDTV/TV compatible coding method based on lapped orthogonal transform (LOT). With this method, TV signals are obtained by performing N/2‐point inverse LOT to low‐order N/2 coefficients. It is shown that the LOT domain decimation reduces the aliasing noise in TV images more efficiently than the DCT‐based method. In addition, intrafield/inter‐frame adaptive LOT coding is examined. The experimental results show that the coding efficiency of intrafield/interframe adaptive LOT coding is higher than that of intrafield/interframe adaptive DCT coding. LOT coding improves the SNR by 1 dB in fixed bit rate HDTV coding at 130 Mb/s. By using LOT as a decimation filter as well as a bit rate reduction algorithm in compatible HDTV coding, the quality of the TV images and the coding efficiency are better than with the DCT‐based method.

KW - compatibility

KW - HDTV

KW - lapped transforms

KW - orthogonal transforms

KW - Video coding

UR - http://www.scopus.com/inward/record.url?scp=84985772800&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84985772800&partnerID=8YFLogxK

U2 - 10.1002/ecja.4410760401

DO - 10.1002/ecja.4410760401

M3 - Article

AN - SCOPUS:84985772800

VL - 76

SP - 1

EP - 12

JO - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)

JF - Electronics and Communications in Japan, Part I: Communications (English translation of Denshi Tsushin Gakkai Ronbunshi)

SN - 8756-6621

IS - 4

ER -