Message-Id: <mailto:199412311724.LAA06208@library.wustl.edu> Date: Sat, 31 Dec 1994 11:29:16 -0600 From: Kurt Foss <mailto:kfoss@DOIT.WISC.EDU> Subject: Re: progressive transmission To: Multiple recipients of list IMAGELIB
You may wanna look into the new image compression/display technology called "Online Art" from Johnson Grace (in Newport Beach, CA) , which America Online recently has licensed. They claim it works three times as fast as other methods for packing and unpacking image files. Their method uses fuzzy logic to speed up compression ... and it decodes the images in waves that successively draw the image on the screen.The other way this can be accomplished today is via a system like Kodak's Picture Exchange or Picture Network International's Seymour -- both based on Photo CD -- that allow the user to do fast on-line searches by modem and get previews of sub-sampled, low-res images; one can then acquire any of the higher levels of resolution according to the speed of the connection and/or the application. While others here occasionally have expressed concern over Photo CD as an archival scan-and-store solution -- mainly on the basis of its compression technique, as I recall -- many sites have adopted PCD as a key ingredient in the development of digital photo databases. It offers the sort of flexibility you appear to be seeking.
Regards ~ Kurt
>---
At 10:31 AM 12/30/94, mailto:troncale@NYPLGATE.NYPL.ORG wrote: >I am interested in corresponding with anyone researching the "progressive
>transmission" technique. This involves the gradual increase of image detail
>and sharpness as long as the image stays on the screen. Thus, one may browse
>images at an initial low resolution and, if desired, wait for (pay for?)
>better resolution to emerge in front of their eyes? Sounds like a great idea
>but how is it physically possible to transmit images in this way? Would
>digital video (of a still image) be the answer? Any suggested readings on the
>matter would be most appreciated.
>
>Anthony Troncale
>Photography Collection
>The New York Public Library
>
mailto:>mailto:troncale@nyplgate.nypl.org~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Kurt Foss * U_Wisconsin-Madison Div. of Info. Technology 608/262-1738 * FAX 608/262-4679 * mailto:kfoss@doit.wisc.edu ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~