Thursday, 1 December 2016

QGIS Time Manager, for archaeological drawing on RTI-like raster series

Hi all,
I go on today writing about the Time Manager plugin of QGIS we saw in our last post
This time I will focus the attention on one of the alternative (and unconventional) use we can do of this tool for archaeological aims: an archaeological vector drawing based on RTI-like raster series.
Of course, when I speak about archaeological vector drawing, I mean a GIS based technique (like the one described in this old post). We already developed a little bit further this methodology in order to use it in a semi-automatic way for archaeological finds (related post 1 and 2; bibliography here), so that this post can be seen as an integration of that work-flow. For the concept of RTI, I suggest you to read +Rupert Gietl 's post about a large scale case of study for such an application and my post about the open source tool developed by Giampaolo Palma (Visual Computing Lab of the CNR-ISTI).
The concept of RTI-like raster series is pretty simple: if in a common archaeological excavation is planned an RTI documentation (e.g. to further analyse particular artefacts such as small pottery fragments, coins, inscriptions in stone, etc...), than it is also possible to use some of the original pictures (with different light conditions) to simulate an RTI viewer within any GIS software. Once one of this picture has been rectified (and georeferenced, when needed), the related worldfile can be used also for all the other images (considering that they have all the same size), so that in QGIS it is pretty simple to create a raster series through the Time Manager plugin.
The video below shows the result of this operation on a pottery fragment from the excavation of Khovle Gora, an archaeological mission in Georgia which we supported for the University of Innsbruck (Institut für Alte Geschichte und Altorientalistik).




I hope this post will be useful, have a nice evening!

Tuesday, 22 November 2016

QGIS Time Manager, for archaeological time series

Hi all,
I am back from the CHNT conference, which was held, like every year, in Vienna. There I had many feedbacks and the possibility to speak with colleagues regarding common problems in our profession (soon I hope to report some feedbacks from the session I was attending). 
Today I would like to write a fast post about time visualization in GIS for archaeological aims, because I was asked by our friend +Undine Lieberwirth  if we ever faced with this topic and especially if we ever used TGRASS. The answer is yes and this reminded me that we never wrote something about it, so I would like to start here a series of post dedicated to chronological GIS visualization with open source GIS in general (and in particular about some non conventional and alternative use of it), considering also the 4D visualization tasks.
By the way, today I will start with something simple, just showing an interesting tool of +QGIS : the  Time Manager plugin.
The video below is just a fast demonstration of this tool, with some data coming from an excavation we performed between 2009 and 2011 in the church of S. Giovanni at Massimeno. The raster time series regards the different architectural phases of the structure (from XI to XXI century) we recognized during the excavation.



That's all for now. Have a nice day!

Friday, 18 November 2016

Homo naledi

As time goes by we noticed that the post we should write are always more and more, while our free is decreasing. Today I have a little bit of extra-time, as I am travelling on the train, so I decided to publish some other data referred to the open source exhibition "Facce", we organized in Padua in 2015 (from an idea of the curator of the Anthropological Museum of the University Nicola Carrara). 
As maybe you know, the exhibition was based on the topic of human faces and one section ("Guardiamo in faccia la diversità umana") was dedicated to human evolution. This section has been presented this year also in Genoa (in the Doge's Palace) at the Science Festival 2016. We already published some of the 20 facial reconstructions of hominini, performed with the technique we developed (Coherent Anatomical Deformation). 
Here I would like to present the new entry of the Genoa's exhibition: The Homo naledi:

Facial reconstruction of Homo naledi
As always, the Facial Recosntruction has been performed by Cicero Moraes (Arc-Team), while the scientific validation has bees done by Telmo Pievani and Nicola Carrara (University of Padua). On the contrary of what happened for most of the other paeoartistic reconstructions, this time it has not been necessary to scan the cast of specimen, but we could use directly the composite skull of Homo naledi (based on DH1 and DH3), constructed by Prof. Peter Schmid in September 2015, as a Courtesy of the University of the Witwatersrand and the Dinaledi project. The files were downloaded from www.MorphoSource.org, Duke University.

Thursday, 17 November 2016

Torre dei Sicconi - Chapter 9 - Rebirth

After surveying, digging and historical research and virtual reconstruction, here is the final result:

Watch in the last chapter of Arc-Team's "Torre dei Sicconi" series our idea of how the castle looked like in the Middel Ages.

Enjoy!

Torre dei Sicconi - Chapter 9 - Rebirth


Wednesday, 9 November 2016

Torre dei Sicconi - Chapter 8 - Reconstruction

After surveying, digging and historical research, we have started to think about, how the castle was looking like in the Middle Ages. 
Photos from the beginning of the 20. century, archaeological finds, 3D models, the comparison with similar, preserved castles: This are the bases for the virtual reconstruction made by Cicero Moraes.
Watch in the next chapter of Arc-Team's "Torre dei Sicconi" series the single steps of 3D reconstruction with Blender

Enjoy!

Torre dei Sicconi - Chapter 8 - Virtual Reconstruction

Monday, 7 November 2016

ArcheoFOSS 2016 Book of Abstracts

Hi all,
here is another quick post, this time just to notify that, thanks to the effort of Antonio Manacorda, +Stefano Campus  and +anna maria marras, the Book of Abstracts of ArcheoFOSS and GFOSS 2016 is already online.
If you are interested, you can find it here.

Poster of the ArcheoFOSS and GFOSS conference 2016

And here you can read the abstract of our three contribution, regarding the development of ArcheoROV, geTTexture and the Red Lake Project

Have a nice day!

Thursday, 3 November 2016

Blender Magazine Italia is back!

Hi all,
this quick post is just to report the news that Blender Magazine Italia is back! 
This year, in November, Blender Italia community will celebrate the 14th year of activity, so that the official website was renovated in February with a brand new look, a forum and new sessions. If you want to join it, just visit this link: https://www.blender.it/
Moreover, today is online the 18th number of Blender Magazine Italia, which can be read directly online here, or downloaded as a pdf here. In this number is included also an article about the Open Source exhibition "Facce. I molti volti della storia umana", which has been realized with just Free/Libre and Open Source Software and in particular with Blender.
I hope you will enjoy reading!

The article about the exhibition "Facce"


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