Post-Filtering Of Transforms-Coded Irnagest

Kou-Hu Tzou

doi:10.1117/12.948449

16 December 1988 Post-Filtering Of Transforms-Coded Images

Kou-Hu Tzou

Proceedings Volume 0974, Applications of Digital Image Processing XI; (1988) https://doi.org/10.1117/12.948449
Event: 32nd Annual International Technical Symposium on Optical and Optoelectronic Applied Science and Engineering, 1988, San Diego, CA, United States

Abstract

An effective filtering technique has been introduced to reduce the blocking effect in transform-coded images. The proposed approach, employs circular-asymmetric two-dimensional (anisotropic) filters adapted to the characteristics of the blocking noise. By adaptively pointing the major axis of the anisotropic filters to the direction perpendicular to the orientation of the block boundary, the anisotropic filter can effectively reduce the block appearance while preserving the sharpness of the transform-coded pictures. Computer simulation of this new method shows significant improvement in image quality subjectively as well as objectively.

Citation Download Citation

Kou-Hu Tzou "Post-Filtering Of Transforms-Coded Images", Proc. SPIE 0974, Applications of Digital Image Processing XI, (16 December 1988); https://doi.org/10.1117/12.948449

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