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Aircraft over the City: Night Time Activity Patterns using Image Stacking

By Image Stacking, london, Timelapse

The image below is our first take at using a technique known as ‘image stacking’ to capture activities in the skies above London at night.


Comprised of 1700 photographs taken 10 seconds apart it is possible to identify City Airport (on the left) and the flightpath to Heathrow. Its not going to win any photography awards but by simply using a low cost webcam mounted inside a waterproof torch it is possible to get some interesting views of the city and the skyline.

The timelapse below strings together the single images used:


Air Traffic Timelapse over London from digitalurban on Vimeo.

Of course during the day the webcam can be used for regular timelapses, as the movie below illustrates:


London Summers Day from digitalurban on Vimeo.

Music by Ghostlight via mp3unsigned.com

The movie above was captured with a frame every five seconds, making for a smooth timelapse, towards the end you can begin to note the aircraft above the skyline.

When we get back up on the roof we will take a photograph of the setup and provide details on how to make your own timelapses and stacked images.

Aircraft over the City: Night Time Activity Patterns using Image Stacking

By Image Stacking, london, Timelapse

The image below is our first take at using a technique known as ‘image stacking’ to capture activities in the skies above London at night.


Comprised of 1700 photographs taken 10 seconds apart it is possible to identify City Airport (on the left) and the flightpath to Heathrow. Its not going to win any photography awards but by simply using a low cost webcam mounted inside a waterproof torch it is possible to get some interesting views of the city and the skyline.

The timelapse below strings together the single images used:


Air Traffic Timelapse over London from digitalurban on Vimeo.

Of course during the day the webcam can be used for regular timelapses, as the movie below illustrates:


London Summers Day from digitalurban on Vimeo.

Music by Ghostlight via mp3unsigned.com

The movie above was captured with a frame every five seconds, making for a smooth timelapse, towards the end you can begin to note the aircraft above the skyline.

When we get back up on the roof we will take a photograph of the setup and provide details on how to make your own timelapses and stacked images.

AAG Final Call: Neogeography

By Posts

Our session on Neogeography at next years AAG has proved popular, to such an extent that we are looking to split it into two sections. As such we have places left for papers, all we require is an abstract and your pin.

Session titles is ‘Concepts, Tools and Applications: The Rise of Neogeography’, final closing date is

ForDigital Urban in association with Dr Andrew Crooks from GIS Agents are organising a session at the 2009 AAG entitled “Concepts, Tools and Applications: The Rise of Neogeography”. Full details are below along with details on how to submit and abstract – note the closing date is 8th October 2008.

Below is an extended abstract for the session:

The world of Geographic Information (GI) Science has changed. It has experienced expeditious growth over the last few years leading to fundamental changes to the field. Web 2.0, specifically The Cloud, GeoWeb and Crowd Sourcing are revolutionising the way in which we gather, present, share and analyse geographic data. This renaissance in the importance of geography in the Web 2.0 world is becoming known as ‘Neogeography’.

Neogeography is geography for the general public using Web 2.0 techniques to create and overlay their own locational and related information on and into systems that mirror the real world. Location and space now represents a key part of the Web 2.0 revolution. Tagging not only the type of information but where such information is produced, who uses it and at what time, is fast becoming the killer application that roots information about interactivity generated across the web to systems that users can easily access and use in their own communication with others.

The aim of this session is twofold; first to bring together practitioners to discuss concepts and challenges that the field of Neogeography faces. Secondly, to provide an opportunity for researchers and developers to present recent tools and applications for collecting, sharing and communicating spatial data for the Neogeographer. We are actively seeking topics ranging across the entire spectrum of Neogeography, from Crowdsourcing, Digital Earths, Neogeography, Web Mashups, Volunteered Geographic Information, Virtual Worlds (e.g. Second Life) and associated Web 2.0 technologies.

Anyone who wishes to presents a paper must first register for the annual meeting, submit an abstract (no more than 250 words that describes the presentation’s purpose, methods, and conclusions). Once this has been done, you need to contact us with your program identification number (PIN), which we will use to add you to the session.

We look forward to hearing from you

Andy and Andrew

Further details on the paper requirements and cost of registration for the AAG meeting can be found at http://www.aag.org/annualmeetings/2009/index.htm

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