Recreating Tower Of London Graffiti Using Photogrammetry

http://www.youtube.com/watch?v=8dW4L9KaQxI Last weekend I visited the Tower of London, which gave me a great opportunity to try out some of the Photogrammetry ideas I have had in the past few weeks. Apart from testing 123D Catch out on large monuments and entire palace façades, I decided (thanks to the suggestion of Helene Murphy) to try …

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Emphasising Inscriptions Using 123D Catch

One of the most interesting projects I have been working on over the past few months has been trying to emphasise inscriptions on artefacts using Photogrammetry. The theory is that if the model is accurate enough it should be possible for a program to determine the different bumps in a surface and exaggerate them in …

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Textures in Photogrammetry: How They Can Deceive Us

One of the advantages I find in Photogrammetry is that unlike other methods such as laser scanning and regular 3D recording, the results are photorealistic. The models seem natural and precise due to the textures that are associated with the points, and aesthetically it is much more pleasing. In addition to this it is amazing …

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Viewing Photogrammetric Models on iPhone/iPad

Since very recent I used to look at the iPhone and the iPad with a pinch of scepticism, as I believed it to be simply a less powerful laptop, mainly used for games and the occasional note taking. I've always been a Windows user, but last month I was given an old iPhone and I'm …

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Program Overview: Meshlab

When writing my third year dissertation a few months ago I analysed a basic method of creating photogrammetric models using 123D Catch, and when it came to discussing the later editing of the models the program I turned to was Meshlab. I'd originally come across this program when looking at the Ducke, Scores and Reeves …

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8 Reason Why We Should Be Using Photogrammetry in Archaeology

If you are an archaeologist you should be using Photogrammetry because:It is easy to use: Unless you are dealing with something extremely large or extremely complex, Photogrammetry has an extremely high success rate. When it was still based on camera calibration, complex calculations and precise measuring was necessary, but with more modern programs often all …

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Accuracy of 123D Catch

I always go on about how Photogrammetry should be used to record everything from small finds to entire sites, but just how accurate are these models? Are they good enough only for recording the objects as nice images or can they actually be used to gain more archaeological information? In essence, is it technology for …

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Potential Method to Emphasise Inscriptions with 123D Catch?

Although this requires much more work and more tests with different objects, it could be a somewhat interesting method to better distinguish inscriptions present on coins or small object. The picture above is of a Medieval lead stopper or weight found at the site of Caerau, Cardiff, which has been made into a 3D model …

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