EBLAST: efficient high-compression image transformation: I. Background and theory

Mark S. Schmalz; Gerhard X. Ritter; Frank M. Caimi

doi:10.1117/12.372743

16 December 1999 EBLAST: efficient high-compression image transformation: I. Background and theory

Mark S. Schmalz, Gerhard X. Ritter, Frank M. Caimi

Proceedings Volume 3814, Mathematics of Data/Image Coding, Compression, and Encryption II; (1999) https://doi.org/10.1117/12.372743
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

In this paper, the first of a two-part series, a high- compression image transformation (called EBLAST for Enhanced Blurring, Local Averaging, and Thresholding) is presented that facilitates image transmission along low-bandwidth channels such as acoustic modems, and exhibits low mean- squared error with spatially uniform reconstruction error. Although initially applied to tactical communication problems, this innovative transform Blurring, Local Averaging, and Thresholding), can be used in commercial applications such as videotelephony. EBLAST's compression ratio (CR), which usually ranges from 100:1 to as high as 250:1 on underwater imagery, can in some cases be increased by follow-on Huffman encoding to yield CR approximating 300:1 with no additional information loss. Additionally, in previous work the authors showed that restriction of the source image to typical targets of interest, followed by compression, could increase CR to 20,000:1 or greater. In such cases, background information is characterized, then discarded prior to compression. In the decompression step, the background is approximately reconstructed from statistical parameters, which can provide verisimilitude for human target cueing applications.

Citation Download Citation

Mark S. Schmalz, Gerhard X. Ritter, and Frank M. Caimi "EBLAST: efficient high-compression image transformation: I. Background and theory", Proc. SPIE 3814, Mathematics of Data/Image Coding, Compression, and Encryption II, (16 December 1999); https://doi.org/10.1117/12.372743

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