Thomas Kunz
Dept. of Systems and Computer Engineering
5
Research Goals and Related Work
nResearch Goals
–identify
promising image transcoding operations, based on image classification
–predict
achievable bandwidth reductions
–good
adaptive algorithms that meet user constraints, take device limitations and link characteristics into account
nadaptive over what timescale, how fast, interactions
with link layer
nRelated Work
–image
transcoding: GloMop, InfoPyramid, Mowser, Mowgli
nall introduce notion of a proxy
nrange of transcoding operations limited/not dynamically
selected
–multiple
versions provided by server:
nWAP: use markup language and protocol stack specific to
cellphones, completely new infrastructure
nRFC 2295/2296: transparent content negotiation and
variant selection, leaves it to server to
provide range of formats suited for huge number of clients