Unsharp masking and its inverse processing integrated in a compression/decompression scheme: application to cardiac angiograms

Patricia V. Beretta; Remy Prost

doi:10.1117/12.207618

27 April 1995 Unsharp masking and its inverse processing integrated in a compression/decompression scheme: application to cardiac angiograms

Patricia V. Beretta, Remy Prost

Author Affiliations +

Proceedings Volume 2431, Medical Imaging 1995: Image Display; (1995) https://doi.org/10.1117/12.207618
Event: Medical Imaging 1995, 1995, San Diego, CA, United States

Abstract

Image data compression can be useful for storage or transmission of cardiac angiograms. In clinical systems, images are recorded in a `raw' format, and are usually processed with an edge enhancement filter to improve the visibility of medical information. The raw images are needed for other processing including quantitative measurements, and their enhanced version is used for display. We report on a compression scheme based on full-frame DCT which allows the integration of enhancement in the codec. We investigated whether the raw or the enhanced image should be compressed. We studied an inverse filter and integrated it in the decompression process, so that a non-enhanced image can be derived after enhancement and compression. The de-enhancement filter acts as a low pass filter for the quantization noise. We proposed to improve the inverse filter using a regularized signal restoration technique.

Citation Download Citation

Patricia V. Beretta and Remy Prost "Unsharp masking and its inverse processing integrated in a compression/decompression scheme: application to cardiac angiograms", Proc. SPIE 2431, Medical Imaging 1995: Image Display, (27 April 1995); https://doi.org/10.1117/12.207618

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