Future trends in imagery SSI ASIBA WALIS Imagery Workshop 28 th November 2005 Stuart Nixon, Founder.
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Transcript of Future trends in imagery SSI ASIBA WALIS Imagery Workshop 28 th November 2005 Stuart Nixon, Founder.
Future trends in imagery
SSI ASIBA WALIS Imagery Workshop28th November 2005
Stuart Nixon, Founder
Scope
Please refer to my SSC 2005 keynote for a discussion on imagery value
This talk looks at requirements that are driving future trends
Working back from needs Most people don’t know what imagery
can do for them because they can’t get access to imagery in the first place
This makes it difficult to look at future trends and their impact
So instead, look at future needs Working back from these needs will
show us what future trends and changes are required
Needs – public use of imagery Public use and need is often overlooked Examples:
Classified gravity maps of little use to unless you are planning to launch ICBM nuclear weapons
Classified high resolution imagery are of little use to disaster victims
Imagery locked up in government departments is of little public use
Public use and availability is the key!
What we need for Public Use
5cm resolution over cities 25cm resolution everywhere else Repeated at least once per month Free use Easy distribution Easy online access These are minimum requirements
What will meet Public Use?
Most demand will be met by airphotos
First address the 80% need (high resolution and high repeat imagery)
Imagery public use requires a value chain of many stages…
Acquisition Processing Storage Use enablement Web delivery Web serving Integration
Thanks to AEROmetrex for this 3.5cm resolution imagery
Future trends on each stage
Where are we today? What is missing? What future trends will help us?
Acquisition
This is what we have today
Solutions exist today for 5cm imagery that can be flown monthly
Digital acquisition solves many problems
Thanks to AEROmetrex for use of this 3.5cm resolution imagery
Processing A big challenge Today: 1TB/week We need: 1TB/hour Future trend will be towards grid
computing solutions for geolocation, mosaicking, colour balancing and compression
An area that deserves active R&D
12,000 airphotos (1TB): - Geocode - Reproject - Colourbalance - Mosaic - Compress
Processing trends We are choking on data volumes Grid computing the way to go (and a
nice technical fit, too) Multi-core CPUs will help a lot A lot of software development
needed A Government+Private “imagery
grid computing” initiative would be interesting and very valuable
Storage 3TB per year is required to image
an entire city 12 times a year at 5cm using 10:1 compression
This is not a lot of storage This year a press release proudly
announced Telstra’s NAS storage costs dropped to $100,000/TB from $1million/TB
This is a joke
Storage trends 500GB drives today; 2TB drives soon Government agencies need to take a
hard look at their IT storage approach Today $10K buys a 5TB RAID NAS
capable box with grid computing ability Future approach to backup imagery is:
Cheap delivery solutions (multi-location) Off-site hard disk replication
Use enablement
Can I use my imageryin common applications?
Use enablement prettymuch solved (Google Earth, ECW, etc)
Use trends Mainstream (Google, Microsoft et al) going
to drive new imagery use – a nasty shock to GIS vendors used to holding the whip
GIS vendors will have to start paying more than lip service to open standards
Would be nice if companies stopped inventing new image formats for each new satellite or imagery solution
We must encourage initiatives like GDAL
Web delivery
Peer to peer delivery proven to share TB’s of imagery to lots of users
35% of all Internet traffic today is peer to peer
GeoTorrent.org demonstrates value Keep it simple!
Web serving
Pretty much solved today Big challenges:
Increasing integration Adding value (location based ads, etc) Availability of imagery
Integration trends
Going to be driven by main stream Advertising revenue probably the
main lead requirement New uses will open up we never
thought of Our industry’s internal politics and
squabbles largely irrelevant
Speculative musings Negative refractive optics – if possible – will
allow sub-centimeter imagery Holographic storage in 2006 will offer
300GB DVD-style disks. Petabyte storage a real long term possibility
Commercial cameras from Canon etc will offer 32+Mega pixel multi-visible spectral solutions at < $15,000/camera soon
High resolution micro-satellite imagery in the future once digital airphotos show the way?
Conclusions
Perhaps surprisingly, most of what we need is here today
Other than for processing, few technical hurdles remain
Big challenges are in other areas – licensing of imagery remains a problem
Airphotos are going to be the driver