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wires - web
image retrieval and expoitation system
WIRES™ optimizes usage
of limited transmission bandwidth to support rapid, interactive,
remote exploitation of extremely large images via the Web.
Techniques and features include:
1. User-driven selective transmission.
Imagery is available in a tiled, multi-resolution format.
Only the tiles of interest, at the spatial resolution of interest,
are downloaded, resulting in significant transmission savings.
The areas of interest are automatically determined as the
user interactively zooms and roams from the initial overview
“thumbnail” image.
2. User controlled quality/speed tradeoff.
At connection establishment, the client probes the server
to measure the latency and throughput of the communications
link and selects an appropriate initial set of compression
parameters. The user can then adjust these parameters as needed,
typically using low quality to navigate to a region of interest
(ROI) and then increasing the quality as desired for each
ROI encountered.
3. Ability to revisit and modify quality/speed tradeoff
for ROIs. WIRES™ allows the user to interactively
adjust compression parameters to tune the quality/speed tradeoff.
Moreover, the WIRES™
client provides a “Gallery Viewer” that allows
the user to view a gallery of image thumbnails before selecting
an image to download. This avoids the frustration of downloading
an image only to subsequently find that it is of insufficient
quality (e.g., has too much cloud cover) to be useful.
For more information on WIRES™,
contact us at
info (at) nextcentury (dot) com.
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