An Edge-Preserving Filter Modeled After Structures In The Visual Cortex

Urs E. Ruttimann; Richard L. Webber

doi:10.1117/12.953250

25 May 1989 An Edge-Preserving Filter Modeled After Structures In The Visual Cortex

Urs E. Ruttimann, Richard L. Webber

Proceedings Volume 1092, Medical Imaging III: Image Processing; (1989) https://doi.org/10.1117/12.953250
Event: Medical Imaging III, 1989, Newport Beach, CA, United States

Abstract

A novel filter was designed that preserves signal edges better than a linear or a median filter when matched to attain the same amount of noise smoothing. This filter was modeled after well-known properties of neurons in the visual cortex that are only sensitive to visual stimuli of lines tilted in specific directions. Using a similar directional sensitivity, the presence of signal edges in the filter window can be detected and the smoothing applied only in directions that do not cross edges. In the presence of white, Gaussian noise, the minimum SNR must be at least 1/2 to attain superiority in terms of edge preservation of this new directional filter, for lower SNR values its performance may deteriorate ungracefully and a linear filter is the clear choice.

Citation Download Citation

Urs E. Ruttimann and Richard L. Webber "An Edge-Preserving Filter Modeled After Structures In The Visual Cortex", Proc. SPIE 1092, Medical Imaging III: Image Processing, (25 May 1989); https://doi.org/10.1117/12.953250

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