Friday, 15 November 2019

Speleoarchaeological exploration of the "Bus de la Spia"

Hi all,
this short post is a fast report of our speleoarchaeological exploration of the natural cave known as "Bus de la Spia" (EN "Spy's whole") near Sporminore (TN - Italy). The mission was organized, thanks to the mayor of the town Mr. Giovanni Formolo, within a larger project regarding the Cultural Landscaper of Non Valley, promoted by the local APT (Tourist Office).
The mission was filmed by two different crew, composed by the technicians of Big River Film Co. (U.S.A.) and Damiano Clauser LandShot (Italy).
This exploration achieved positive results, certifying the presence some historical "graffiti" dating back to World War I and collecting a fragment of a wooden board. Despite its excellent conservation, this sample is probably connected with the first explorations of the cave at the beginning of XVIII century. In fact the wood has been preliminary analyzed by Dr. Mauro Bernabei of CNR-IVALSA (the institute of the Italian National Research Council specialized in wood sciences). It is a made from an European sprud (Picea abies) and it is composed by 41 rings (probably dating from 1680 to 1721). During the mission was also observed a particular speleothem (a coumn), probably broken during an historical earthquake (maybe the 1976 Friuli earthquake), very interesting for archaeological study of these phenomena.
For more details about this speleoarchaeological exploration, here is the direct link to the technical report (by now in Italian only). 
Have a nice day!

The broken column inside the Bus de la Spia cave

Tuesday, 15 October 2019

Forensic Facial Reconstruciotn of St. Catherine of Genua (technical report)

Hi all,
this year we worked on several Forensic Facial Reconstruction (FFR) with our expert Cicero Moraes. One of these projects regards St. Catherine of Genua, whos mortal remains are preserved in the church of the "Santissima Annunziata di Portoria", in Genua, and are considered by the Roman Catholic Church, among the so-called "incorrupted bodies".
The FFR project has been very interesting, since it needed some extraordinary procedures, due to three factors: the exceptional conditions of preservation of the body, the particular structure of the sarcophagus and the history of the different necroscopic reconnaissances of the relics of the Saint.
In order to perform the final FFR, we had to adapt our protocol to this particular situation. The solution came from a 3D model produced with SfM-MVS techniques, without opening the sarcophagus, and from some reverse engineering techniques related with the "Coherent Anatomical Deformation", developed in 2014.
Thanks to the kindness of padre Vittorio Casalino, we can now share not only the final result of our study (image below), but also the scientific report (by now, unfortunately, only in Italian), which you can read on ResearchGate, Academia or simply on the Arc-Team Digital Archive.

The final model of St. Catherine of Genua developed by Arc-Team (FFR by Cicero Moraes, 3D data acquisition by Alessandro Bezzi, historical research by Luca Bezzi)

I will try to translate the text in English ASAP (any help is greatly appreciated), but in the meantime I hope this version will be useful, also to go on with the scientific discussion about FFR (which is pretty animated in the last year).
Have a nice day!

Friday, 11 October 2019

I made my own surgical guide using OrtogOnBlender!

Those who follow my work know that I develop an addon called OrtogOnBlender, a learning tool for surgical planning.

I have had the honor of using it to teach many people and also develop surgical guides for the fields of human and veterinary health.

The fact is that these past few weeks, for the first time, I have been using this technology in my own body.

It all started when my dentist asked me to do a CT-scan of an injury that insisted on not completely healing.

Coincidentally, I was teaching a computer graphics course in my city, and my students included radiology and endodontic surgery specialists.

In commenting on my need, I was instructed to take the exam and took the opportunity to proceed with a broad approach. In addition to the tomography of the teeth, they also digitized them in 3D (intraoral digitization). I am very grateful to the staff of the Santa Izabel Clinic, especially Dr. Carlos Augusto Abascal Shiguihara and Dr. Gabriela Zorron Cavalcanti, since I was extremely well attended there.

The first thing we did when we received the CT-scan was to isolate the lesion and reconstruct it in 3D using the Slicer 3D semi-automatic segmentation option. It is evident that the work was followed from the beginning by the surgeon, Dr. Roosevelt Macedo of Statto Clinic, also located in the city I currently live, Sinop-MT, more or less in central Brazil.

Once the lesion was isolated and positioned in a 3D space, I was then able to reconstruct the tomography directly by OrtogOnBlender and import the lesion (in red).

To improve the fit of the future surgical guide, I aligned the teeth from intraoral scanning with those of tomography.

Now we had the teeth, root and lesion very well positioned.

Using OrtogOnBlender's guide creation tools, we designed a structure that fit the teeth while maintaining a safe distance from the gums.

The purpose of the guide was to inform the surgeon of the exact projection of the lesion so that he could access it laterally when drilling the bone.

Here we have a bottom view of the model where we see the tentacular aspect of the guide.

We exported the model as STL and it was printed in high resolution 3D on the premises of Santa Izabel Clinic.

Fine print, but would the model fit properly?

I went to Dr. Roosevelt Macedo's clinic for a test and the model fit perfectly!

We arranged the day of surgery and prepared myself for it.

Snap test at surgery.

Lateral perforation. The image has been edited with grayscale and jagged to avoid shocking readers.

As expected the guide worked very well and allowed the surgeon to find and remove the injury.

I greatly thank the staff of Statto Clinic for the excellent treatment offered.

More than thank the doctors and health experts, I also thank my friend and project partner, Adriano Barreto, who organized the course that kicked off this event.

I hope this is the beginning of a history of using 3D technology more effectively and presently, not only in major cities, but also in more inland cities like mine. It is a great honor and joy to participate in all this, and of course, thanks to you who have read this far.

If OrtogOnBlender interests you, be sure to read the official documentation and download the system that runs on Windows, Mac OS X and Linux:

A big hug!

Monday, 9 September 2019

ImageMagick: images to pdf

Hi all,
the time to write new post in ATOR is always less and less. This year we were very busy on the field with several projects that I hope I will be able to report in this blog soon (no idea when...).

This short post is my personal attempt to reactivate the project ATOR (as well as the project ArcheOS), also writing very short texts like this one, inspired by the work we are doing everyday. In this sense I will go on writing also very simple tutorial, since I would like ATOR to remain a source also for newbies.

Today I start with a very simple operation, which can be useful when we have to study old (unpublished) historical sources from archives and libraries. As an example, in these days I am working for the official presentation of the Forensic Facial Reconstruction of St. Caterina Fieschi Adorno from Genua, a project we accomplished thanks to our forensic expert Cicero Moraes. To prepare this reconstruction I had to study some historical sources from the "Archivio Storico dei Cappuccini di Genova" (EN "Historical Archive of the Capuchins of Genoa") and, thanks to the kind help of Dr. Simonetta Otta and fr. Vittorio Casalino I had access to the original scans of old technical reports, written by several specialists who studied the preserved body of St. Caterina during the years. These scans were, obviously, a series of raster images and, in order to simplify their consultation, I composed them into a pdf. To perform this operation I simply used one of ATOR open software: ImageMagick

In short, I simply start the terminal, browsed the image folder (cd PATH_TO_IMAGES) and give this command: covert *.IMAGES_EXTANSION OUTPUT_NAME.

This short videoturial is showing this simple process. I hope it will useful to someone. Have a nice day!

Monday, 1 April 2019

CHNT 22, 2017. Proceedings online

Hi everyone.
Since 2017 we are with Marco Block Berlitz and Moritz Mennenga  to organize a session about underwater archaeology during the annual conference Cultural Heritage and Newt Technologie (CHNT), held in Vienna.
This short post is to report that, thanks to the effort of Susanne Uhlirz and Wolfgang Börner, the proceedings of the 22nd conference are now online. This is the direct link to proceedings, while, if you are interested in our contribution ("Documentation and sampling strategies in underwater archaeology. General criteria and specific solutions"), you can read here.

The first slide of Arc-Team's presentation at CHNT 2017
 Have a nice day!

Wednesday, 20 February 2019

ArcheoFOSS 2019

Hi everyone,
this fast communication is to inform you that the 13th edition of ArcheoFOSS (the conference about archaeology and FLOSS) will be held tomorrow (February 21, 2019) in Padua, together with the meeting FOSS4G (the annual meeting of the "Italian Association for Free Geographic Information").
As you probably know, if you are a regular reader of ATOR, we have a kind of emotional connection with this event and, for this reason, we always try to follow the conference, possibly showing something new, related with our research in Open Archaeology.

The flyer of FOSS4G 2019

This year we will participate with three presentations:

  1. " Free and open source Remote Piloting Aircraft System", with Luca Delucchi (Fondazione Edmund Mach)
  2. "Participative models in archeology: Wiki e open access platforms", with Lucia Marsicano and Marco Montanari (Open History Map)
  3. "Archeology and 3D in real-time, from the first applications to the SLAM algorithms. The state of the art in the open source world."
If someone of you will join the meeting, we can meet there :).
Have a nice day!

Tuesday, 19 February 2019

4D reconstruction of Fort "Rocchetta"

Hi everyone,
it's been a long time since I've written a post. Like always the problem is the lack of time :).
I will try to be more present on ATOR and reactivate our blog, since recently some people wrote me that it has been a good resource for free research in archaeology during the last years. I think that, with the help of readers and authors, the blog can start again to share interesting information about Open Research in our discipline.
Today I will start writing about the result of a study we did in 2018, for an exhibition on the World War I in Non Valley. We were asked to work on the archaeological session of the exhibition, which was held in the town of Livo. If someone is interested in this project, here is the article (in Italian), about our session: it is basically an introduction to Modern Conflict Archaeology, with focuses on the several sub-disciplines which are used in this kind of research (Aerial Archaeology, Glacial Archaeology, High Mountain Archaeology, Underwater Archaeology and Speleoarchaeology).
Working on this project, we tried, like always, to keep an Open Research approach, so that, after the good experience of the Open Source exhibition "Imago Animi", we also organized an editathon for Wikipedia, thanks to the help of the wiki community of our region. I will write in another post about this experience. Today I will share one of the main result: the 4D reconstruction of Fort "Rocchetta", which is one of the main structure of the valley, involved in WW1.

One of the view of the reconstruction of Fort "Rocchetta"

The 4D reconstruction has been performed by our 3D specialist Cicero Moraes in Blender. Technically speaking it is a synchronic 4D, since we reconstructed the building at the moment of its construction (around 1860), but we planned a future development into a diachronic 4D (with all the historical steps that modified the structure), after a more accurate research. We speak about 4D, because this kind of archaeological reconstructions are done to recover the three spatial coordinates (x,y,z, better, n,e,z) and the fourth temporal coordinate (t).

Another view of the reconstruction of Fort "Rocchetta"

Currently the fort is in the state of ruins, so that to perform the reconstruction we started with an archaeological survey on the field, integrated with an historical (archival) research, studying the documents of the Archivio di Stato di Trento and of the Österreichisches Staatsarchiv of Wien. Thanks to this research we were able to find some old pictures, and a map, showing the fort from enough different viewpoints to try a SVR (Single View Reconstruction), based on perspective rules.
If you need to use a similar technique for your work, there are several Free/Libre and Open Source Software to perform this kind of 4D reconstruction. One of the first software of this kind was jSVR, but nowadays I would suggest to use the specific Blender addon BLAM, recently evolved into the project fSpy. BTW Cicero preferred to work directly in Blender, without the use of addons.
Here below is the final video we produce, released with an open license (CC-BY).

I hope this post was useful, have a nice day!
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