Adaptive transform coding of images using approximate trigonometric expansions

Qurban A. Memon; Takis Kasparis

doi:10.1117/12.263396

17 January 1997 Adaptive transform coding of images using approximate trigonometric expansions

Qurban A. Memon, Takis Kasparis

Proceedings Volume 2915, Video Techniques and Software for Full-Service Networks; (1997) https://doi.org/10.1117/12.263396
Event: Photonics East '96, 1996, Boston, MA, United States

Abstract

The objective behind transform coding is to transform a data array into a statistically uncorrelated set. The uneven distribution of energy in transform coefficients is exploited for compression purposes, with significant energies considered for further processing. Block transforms, particularly the discrete cosine transform, have been used in image-video coding. An approximate Fourier expansion (AFE) of non-periodic signals with theoretically uncorrelated coefficients has been previously proposed. Furthermore, the capabilities of an approximate cosine expansion (ACE) have been explored for purposes of image coding. In this paper, we apply an approximate trigonometric expansion to images and investigate the potential of adaptive coding using blocks of images. The variable length basis functions computed by varying a user-defined parameter of the expansion will be used for adaptive transform coding of images. For comparison purposes, the results are compared with discrete cosine transform (DCT). Computer simulation results also are presented.

Citation Download Citation

Qurban A. Memon and Takis Kasparis "Adaptive transform coding of images using approximate trigonometric expansions", Proc. SPIE 2915, Video Techniques and Software for Full-Service Networks, (17 January 1997); https://doi.org/10.1117/12.263396

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
10 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Image compression

Bandpass filters

Signal processing

Visualization

Computer programming

Computer simulations

Image information entropy

Show All Keywords

Keywords/Phrases

Search In:

Publication Years