Image coding using weighted cosine transform

Kwok Tung Lo; Wai kuen Cham

Image coding using weighted cosine transform

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

1 Citation (Scopus)

Abstract

A new orthogonal transform, called weighted cosine transform (WCT), is developed for digital image coding applications. The new transform is characterized. The transform matrix is the weighted version of that in the discrete cosine transform (DCT). Various commonly used criteria based on the one-dimensional and two-dimensional Markov models have shown that the performance of the order-8 and order-16 WCT is better than the DCT and the phase-shift cosine transform (PSCT), which is an improved version of the DCT. A fast computational algorithm for the WCT is also derived, which, however, requires more computational efforts than the DCT.

Original language	English
Title of host publication	90 IEEE Reg 10 Conf Comput Commun Syst IEEE TENCON 90
Publisher	Publ by IEEE
Pages	464-468
Number of pages	5
ISBN (Print)	0879425563
Publication status	Published - 1 Dec 1990
Externally published	Yes
Event	1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90 - , Hong Kong Duration: 24 Sept 1990 → 27 Sept 1990

Conference

Conference	1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90
Country/Territory	Hong Kong
Period	24/09/90 → 27/09/90

ASJC Scopus subject areas

Engineering(all)

Cite this

@inproceedings{1b016ef2c5d84c78947a4deb48816779,

title = "Image coding using weighted cosine transform",

abstract = "A new orthogonal transform, called weighted cosine transform (WCT), is developed for digital image coding applications. The new transform is characterized. The transform matrix is the weighted version of that in the discrete cosine transform (DCT). Various commonly used criteria based on the one-dimensional and two-dimensional Markov models have shown that the performance of the order-8 and order-16 WCT is better than the DCT and the phase-shift cosine transform (PSCT), which is an improved version of the DCT. A fast computational algorithm for the WCT is also derived, which, however, requires more computational efforts than the DCT.",

author = "Lo, {Kwok Tung} and Cham, {Wai kuen}",

year = "1990",

month = dec,

day = "1",

language = "English",

isbn = "0879425563",

pages = "464--468",

booktitle = "90 IEEE Reg 10 Conf Comput Commun Syst IEEE TENCON 90",

publisher = "Publ by IEEE",

note = "1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90 ; Conference date: 24-09-1990 Through 27-09-1990",

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TY - GEN

T1 - Image coding using weighted cosine transform

AU - Lo, Kwok Tung

AU - Cham, Wai kuen

PY - 1990/12/1

Y1 - 1990/12/1

N2 - A new orthogonal transform, called weighted cosine transform (WCT), is developed for digital image coding applications. The new transform is characterized. The transform matrix is the weighted version of that in the discrete cosine transform (DCT). Various commonly used criteria based on the one-dimensional and two-dimensional Markov models have shown that the performance of the order-8 and order-16 WCT is better than the DCT and the phase-shift cosine transform (PSCT), which is an improved version of the DCT. A fast computational algorithm for the WCT is also derived, which, however, requires more computational efforts than the DCT.

AB - A new orthogonal transform, called weighted cosine transform (WCT), is developed for digital image coding applications. The new transform is characterized. The transform matrix is the weighted version of that in the discrete cosine transform (DCT). Various commonly used criteria based on the one-dimensional and two-dimensional Markov models have shown that the performance of the order-8 and order-16 WCT is better than the DCT and the phase-shift cosine transform (PSCT), which is an improved version of the DCT. A fast computational algorithm for the WCT is also derived, which, however, requires more computational efforts than the DCT.

UR - http://www.scopus.com/inward/record.url?scp=0025533243&partnerID=8YFLogxK

M3 - Conference article published in proceeding or book

SN - 0879425563

SP - 464

EP - 468

BT - 90 IEEE Reg 10 Conf Comput Commun Syst IEEE TENCON 90

PB - Publ by IEEE

T2 - 1990 IEEE Region 10 Conference on Computer and Communication Systems - IEEE TENCON '90

Y2 - 24 September 1990 through 27 September 1990

ER -

Image coding using weighted cosine transform

Abstract

Conference

ASJC Scopus subject areas

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