Edge-enhanced image zooming

Stefan Thurnhofer; Sanjit K. Mitra

doi:10.1117/1.600619

1 July 1996 Edge-enhanced image zooming

Stefan Thurnhofer, Sanjit K. Mitra

Optical Engineering, Vol. 35, Issue 7, (July 1996). https://doi.org/10.1117/1.600619

A new adaptive algorithm for image interpolation with perceptual edge enhancement is proposed. Here, perceptual means that edges are enhanced and interpolated in a visually pleasing way. Each pixel neighborhood is classified into one of three categories (constant, oriented, or irregular). In each case, an optimal interpolation technique finds the missing pixels without generating unpleasant artifacts such as aliasing or ringing effects. Furthermore, a quadratic Volterra filter is employed to extract perceptually important details from the original image, which are then used to improve the overall sharpness and contrast. Both qualitative and quantitative simulation results clearly show the superiority of our method over standard low-pass interpolation algorithms such as bilinear, diamond-filter, or B-spline interpolation.

Citation Download Citation

Stefan Thurnhofer and Sanjit K. Mitra "Edge-enhanced image zooming," Optical Engineering 35(7), (1 July 1996). https://doi.org/10.1117/1.600619

Published: 1 July 1996

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