Efficient fax transmission of halftone image sequences

Kevin J. Parker; Hei Tao Fung

doi:10.1117/12.61061

1 October 1992 Efficient fax transmission of halftone image sequences

Kevin J. Parker, Hei Tao Fung

Author Affiliations +

Journal of Electronic Imaging, Vol. 1, Issue 4, (October 1992). https://doi.org/10.1117/12.61061

Abstract

We propose an algorithm in which a sequence of digital halftone images is efficiently transmitted using encoding compatible with conventional facsimile devices. To enhance the CCITT standardized coding schemes for Group 3 and Group 4 facsimile apparatus, pre-encoding is done on each image in the sequence: The image is either pre-encoded as a combination of bit representation of block means and an "error" image, according to the ToneFac algorithm, or it is pre-encoded as an "interimage" in which interframe redundancy is converted into spatial redundancy, and the least "busy" of the above images is encoded and transmitted. The approach is referred to as the ToneSec algorithm.

Citation Download Citation

Kevin J. Parker and Hei Tao Fung "Efficient fax transmission of halftone image sequences," Journal of Electronic Imaging 1(4), (1 October 1992). https://doi.org/10.1117/12.61061

Published: 1 October 1992

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