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  • Tom Goskar 9:18 pm on 23 February, 2010 Permalink | Reply
    Tags: analysis, , illumination dome, imaging, PTM, RTI, surface detail   

    Polynomial Texture Mapping for Archaeologists 

    This month sees the publication of an article written by myself and Dr Graeme Earl from the University of Southampton’s Archaeological Computing Research Group entitled “Polynomial Texture Mapping for Archaeologists” in the March/April edition of British Archaeology magazine.

    Polynomial Texture Mapping (PTM) is a technique that uses ordinary digital photography equipment alongside directional lighting. It produces images that can be lit from any direction, as if you had the real object in front of you. It is an excellent technique for analysing fine details on surfaces, something that has particular utility in archaeology.

    Setting up the camera

    The full text will be available online after the next edition of BA comes out.

    The photo above is of the PTM illumination dome which I designed and built at Wessex Archaeology. You can see more details about the dome in my building a PTM illumination dome Flickr set. I have much more to say about PTM, so stay tuned.

    Find out more about the Wessex Archaeology PTM rig and see interactive examples.

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  • Tom Goskar 2:55 pm on 22 April, 2009 Permalink | Reply
    Tags: , archaeopix, , photographs,   

    Archaeopix: a Creative Commons archaeology photo search tool 

    Alun Salt and I have been working on a new website to help simplify the process of finding archaeology and heritage-related photos that have a Creative Commons license attached to them.

    Without further ado, introducing… Archaeopix!

    Archaeopix homepage

    The homepage features a photo of the day, which we hope to update daily. Clicking “Search” on the navigation bar takes you to the tool where you can look for CC licensed images which have been posted to a hand-picked series of groups and accounts on Flickr:

    Archaeopix search results

    This is what Alun has to say about the search tool:

    The clever bit is the search page.

    Searching Flickr can be hit ‘n’ miss. Generally if you want to use a photo for a blog or educational handout and you need it quickly, it needs to be licensed under a creative commons licence. You can search on Flickr for cc-licensed photos, but a search for “Rome” will bring up everything with Rome in it. Groups are handy because they’re themed. So you could search the Archaeology group for Rome. The problem then is that you’ll find a lot of ©opyright photos. You really need a group which is all cc-licensed. Chiron is a good example of that. However Chiron’s strength is that it focuses on the classical world, which means you won’t find prehistoric Europe in it, or anything Mayan. This is where Archaeopix search comes in.

    Head over to Alun’s Archaeoastronomy blog to read more about Archaeopix.

    Link: Archaeopix

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  • Tom Goskar 10:33 am on 29 January, 2009 Permalink | Reply
    Tags: , CBA, events, festival   

    Festival of British Archaeology 2009 

    Formerly “National Archaeology Week”, the newly named “Festival of British Archaeology 2009″ will take place between Saturday 18th July and Sunday 2nd August at venues and sites across the UK.

    The Festival of British Archaeology (formerly National Archaeology Week) is your unique chance to discover and explore the archaeological heritage of the United Kingdom. During this two-week archaeological extravaganza, which will run from Saturday 18th July to Sunday 2nd August, you can take part in excavation open days, hands-on activities, family fun days, guided tours, exhibitions, lectures, ancient art and craft workshops and much, much more.

    The aim of this annual event is to encourage everyone, including young people and their families to visit sites of archaeological/historical interest or museums, heritage and resource centres, to see archaeology in action and to take part in activities on-site.

    The Festival is a celebration of both British archaeology and of the presentation of archaeology from around the world in Britain. Events take place annually all over the UK.

    The Festival of British Archaeology is the new name for National Archaeology Week (which has been taking place since 2005, as an expansion of National Archaeology Days, which were established in 1990). The Festival retains the general format of National Archaeology Week but gives everyone even more opportunity to participate in a wide range of archaeology related activities and events across the UK, by spreading the events over a fortnight.

    More details can be found at the Festival of British Archaeology website.

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  • Tom Goskar 8:34 am on 10 October, 2008 Permalink | Reply
    Tags: , Amesbury Archer, , ,   


    Lasers and Light from Wessex Archaeology on Vimeo.

    This is an animation that I put together at Wessex Archaeology for the Society of AntiquariesMaking History exhibition at Salisbury and South Wiltshire Museum.

    I posted some more information about the animation over at the Wessex Archaeology Computing Blog, so I won’t repeat myself here!

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    • Elena 8:23 am on 11 November, 2008 Permalink

      Wow, a really intresting animation! I have too look more closely at it when I get to my own computer at home…

    • Stu Eve 10:14 am on 27 May, 2009 Permalink

      Tom, this looks really great – I love the LiDAR. How did you put the animation together? What software did you use?

    • Tom Goskar 1:07 pm on 27 May, 2009 Permalink

      Hi Stu,

      I used GlobalMapper, ArcGIS, and Vue 6 Infinite to produce it. I had to do some cunning things to make Vue accept the full (<1m) resolution DEM – involving a fractal-based terrain. I wanted to avoid interpolation/smoothing as much as possible. I also had to introduce primitives into the scene to mark out the key features in the landscape to aid the animation, but tell the camera not to render them. This is because the OpenGL system in Vue (and my video card) can’t display the whole scene in the viewport – only a simplified version (way too many polys). There was a bit of trial and error, but overall I’m pleased with the results. Had I more time, I’d make a far more impressive version using the filtered LiDAR dataset, and generating trees in the right places…

      Cheers,

      Tom

  • Tom Goskar 10:39 am on 17 July, 2008 Permalink | Reply
    Tags: , Articles, British Archaeology, Making People Believe   

    Making People Believe text now online 

    Back in April, I blogged about a new article on archaeological computing written by myself and two colleagues. It is entitled “Making People Believe” and appeared in the 100th edition of the Council for British Archaeology’s British Archaeology magazine.

    I am happy to announce that the full text of Making People Believe is now online (without images due to restrictive copyright agreements).

    Feel free to discuss the article in a comment below.

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  • Tom Goskar 11:18 am on 29 May, 2008 Permalink | Reply
    Tags: , creativecommons, , Stansted   

    More Creative Commons Archaeology Data 

    Framework Archaeology (a joint venture between Wessex Archaeology and Oxford Archaeology) have just released data from the excavations at Stansted Airport from between 1999 and 2004.

    The data is released under an Attribution Non-Commercial Creative Commons license. This is good news for archaeologists and other interested parties to be able to reuse and share the data, and another step forward towards opening up data about our past.

    Framework Archaeology also distribute a (Windows-based) free data viewer, which provides basic GIS functionality for viewing the Stansted and Heathrow Terminal 5 data. The installation process is simple – download the Free Viewer (as it is called) and run the installer. Then download the dataset, run the dataset installer, launch the software, and explore away…

    For those that just want the raw Stansted data, the formats for download include csv, xml, gml, shp, data dictionary, photos (jpg), and sections (jpg).

    The excavation data for Heathrow Terminal 5 was released by Framework Archaeology in a similar way last August.

    Making data from such an important archaeological excavation is a great philosophical move, and I do hope that more organisations follow suit. The key will be to see what (if anything) people do with this data…

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    • Mia 3:04 pm on 30 May, 2008 Permalink

      Nice one! I’d love to hear more about how it’s used as people discover it.

  • Tom Goskar 5:44 pm on 14 April, 2008 Permalink | Reply  

    Making People Believe – Article in British Archaeology Magazine 

    British Archaeology Magazine 100The 100th edition of British Archaeology magazine contains a feature article co-written by myself, Leif Isaksen, and Paul Cripps. I am lucky (or unlucky?!) to grace the front cover (that’s me, bottom left next to the giant flint).

    The article, entitled “Making People Believe” is about the state of archaeological computing today, where it has come from, and where we believe it is going. The official blurb is as follows:

    When computers were new, the buzz was about science and sums. Now digital technology is commonplace, say Leif Isaksen, Tom Goskar and Paul Cripps, the impact on archaeology is to assist open participation and intuitive analysis. They show just a few of the ways this might happen.

    I came up with the idea of writing the article after a discussion about the dwindling numbers of people studying archaeological computing at universities. Many people are still surprised when I explain what I do – the connection between archaeologists and computers isn’t one that is very often made.

    We perhaps are responsible for remaining too “back stage” with our work. I felt that it was time that we did something positive for our profile, beginning with an article in an archaeology publication that people could actually buy in shops for not much money. Most archaeologists prefer to publish in relatively (relative to interested people outside the profession) obscure peer-reviewed journals that only large university libraries can afford to buy. We publish to ourselves an awful lot.

    In a few months time, the text of Making People Believe will be available for free online on the British Archaeology website. It doesn’t get much more open and accessible than that (other than printing it and posting it through letterboxes).

    A quick word about the title. We (the authors) had a working title, the rather unimpressive but descriptive “Archaeology in the Digital Age”, but the editor decided to choose something else for the final cut. Personally speaking, it’s not a title I particularly like, but hopefully the words of the feature itself will speak for themselves.

    So if you’d like to learn how archaeologists use computers, and how silicon has become more ubiquitous than steel, as well as a raft of other excellent features, head down to your local newsagents (well, Borders and WH Smith at least) and for £4.25 the most excellent 100th edition of British Archaeology can be yours.

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  • Tom Goskar 9:32 am on 14 March, 2008 Permalink | Reply  

    Past Horizons online archaeology magazine 

    David Connolly and Maggie Struckmeier of British Archaeological Jobs Resource (BAJR) fame, also run a website called Past Horizons. It highlights opportunities for amateur or professional archaeologists to participate in projects around the globe. It’s a great website, with project listings, forums for those who want to talk to others about their experiences abroad, a blog (where David and Maggie make themselves very approachable if you have a question), and now, an online magazine.

    You can read Past Horizons either on Scribd or via the rather fancy full-screen digipage version, which even curls the page as you turn it, complete with playable videos. It’s well worth checking out.

    Past Horizons

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    • David Connolly 6:44 pm on 14 March, 2008 Permalink

      Big thanks for that… wessex is an inspiration to us … pushing the boundaries of what is possible…

      thanks

    • Tom Goskar 6:49 pm on 14 March, 2008 Permalink

      Thanks David!

      This is mine and Tehmina’s blog though, not Wessex’s! But there are days when it all starts to blur together somewhat… ;-)

      This year you will hopefully see some more innovations though. The rest of 2008 is going to be interesting and fun!

    • Michael Cheung 12:54 am on 15 March, 2008 Permalink

      You can find out all the features of our system at http://www.digital-publishing.co.uk.
      Here you will find live client samples and all the workings and features of the system.

      Digital Publishing International
      turning print publications into reality
      —————————————
      http://www.digital-publishing.co.uk
      info@digital-publishing.co.uk
      0845 838 6888

    • Tehmina Goskar 8:09 pm on 15 March, 2008 Permalink

      I’m really pleased to see good-quality magazines publish themselves creatively online. One of the greatest barriers to favouring online publication of journals is readability – people do not like reading large quantities of text from a screen (much of this down to the resolution our eyes feel comfortable with).

      I like the idea of the digipage version though am a little disappointed that the resolution lets it down – any plans on improving this?

    • Michael Cheung 1:11 am on 16 March, 2008 Permalink

      The clarity of the publication is down to the original document itself.
      For our publication which we produce, we ask our clients to send across hi-resolution print ready files.

      This allows good quality on normal view at 100% but when you click to zoom in even at 400% the chrispness and sharpness is maintain and you can see the finest of details.

      You can see some of our better hi-quality produced publications at http://www.digital-publishing.co.uk/digital-publications.html

      Digital Publishing International
      turning print publications into reality
      —————————————
      http://www.digital-publishing.co.uk
      info@digital-publishing.co.uk
      0845 838 6888

    • Maggie 2:32 pm on 15 May, 2008 Permalink

      Just to let you know the second edition of Past Horizons Magazine is now online.

      The contents include The Battle of Culloden, Saveock Animal Pits and Israeli Settler group using archaeology for their own ends, and lots more…

      http://www.pasthorizons.com/magazine

      Thanks
      Maggie

  • Tom Goskar 11:14 am on 25 January, 2008 Permalink | Reply  

    Wiltshire SMR goes online 

    If you’re interested in the archaeology of the county of Wiltshire, you can now access the Wiltshire Sites and Monuments Record (SMR) online, complete with a map interface.

    Wiltshire SMR map interface showing Old Sarum

    It takes a bit of getting used to the interface, but to have this information publicly available is a step in the right direction.

    Tip: find the area you are interested on the map. Click the pushpin on or near a feature that you are interested in. Then click the “In the area” tab. Select “Sites and Monuments Record” on the left. You will then see features nearest the pin. Click the name of the feature you’re interested in, and a new window with details pops up. From the details page you can view the feature exactly on a map, or on Google Maps. It will open endless new windows, but that’s a small price to pay for having this information freely available.

    This is of course a boon for all the Stonehenge buffs out there, as you’ll be able to explore the surrounding landscape and get a better appreciation for what’s below the soil as well as above it.

    Link: Wiltshire SMR, LocalView map interface

    [Update] The map doesn’t seem to work in Firefox or any other Mozilla-based browser (such as Flock). It does work in Internet Explorer on a PC, and Safari on a Mac, however.

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    • Andy Burnham 12:17 pm on 28 February, 2008 Permalink

      BOOO – how can a new publicly funded site going live in 2008 possibly justify not working properly across browser platforms. Wiltshire should be ashamed of themselves.

  • Tom Goskar 2:17 pm on 16 January, 2008 Permalink | Reply  

    Opening up a Roman Coffin 

    It’s not every day that you get a phone call from an excited colleague saying “we’ve found a Roman sarcophagus – can you grab your video camera and come out?”.

    This short film (hosted by the fabulous Vimeo) shows just how exciting archaeology can be!


    Opening a Roman Coffin from Wessex Archaeology on Vimeo.

    There is a shortened (10 minute) version on YouTube for the masses. But Vimeo wins hands down for video quality.

    For the more technically inclined reader, the film was made with a Sony DCR-TRV50E MiniDV camcorder without a tripod (the tripod head went walkies), and was edited in iMovie ‘08 on a Mac.

    More information about the burial can be found at Wessex Archaeology.

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