Efficient three-dimensional survey techniques and their comparison in open software in the archaeological test site of "Ninfeo maggiore" and "Ninfeo minore" of Formia (latina, Italy)
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Number of Parts | 351 | |
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License | CC Attribution 3.0 Unported: You are free to use, adapt and copy, distribute and transmit the work or content in adapted or unchanged form for any legal purpose as long as the work is attributed to the author in the manner specified by the author or licensor. | |
Identifiers | 10.5446/68940 (DOI) | |
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Production Year | 2022 |
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FOSS4G Firenze 2022302 / 351
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00:00
Form (programming)Software testingGoodness of fitComputer animation
00:07
Entire functionArchaeological field surveyOpticsIntegrated development environmentInequality (mathematics)Complex (psychology)Simultaneous localization and mappingLatent heatPersonal digital assistantSound effectMereologyAreaSoftware testingCASE <Informatik>Complex (psychology)Different (Kate Ryan album)Archaeological field surveyAuthorizationSource codeXML
00:52
AreaUniform resource locatorMereologyAreaRight angleArchaeological field survey
01:17
OpticsArchaeological field surveyDifferent (Kate Ryan album)
01:21
Pairwise comparisonInequality (mathematics)OpticsError messageBuildingRotationHorizonArchaeological field surveyOpen setSoftwareAbsolute valueDistanceSimultaneous localization and mappingEndliche ModelltheorieComputer-generated imageryProcess (computing)AreaMereologyFitness functionSpline (mathematics)Error messageResultantShape (magazine)Sound effectSimultaneous localization and mappingArchaeological field surveyOpticsMatrix (mathematics)Point cloudLaser scanningPairwise comparisonSoftwareDifferent (Kate Ryan album)2 (number)CASE <Informatik>Real numberGame controllerHypothesisComputer animation
Transcript: English(auto-generated)
00:01
Good morning, I am Valerio Bayock and I am here to present you our work. In some countries, like in Italy, there is sometimes the need for effective and very fast solving methods for the acquisition of some archaeological areas in which there
00:25
is remains that are on a wide part of the area. In this paper, we will illustrate some tests on a real case, the survey of Capo Selle Villa complex in Gaeta,
00:42
attributed by some authors to Cicero. We will test different technologies for the survey of the external part and the internal part. Here, on the left, you can see the location of Gaeta that is in the center of Italy, on the Turanian Sea. On the right, all the area that was surveyed that you can see is on the sea.
01:05
The villa that was surveyed is partly buried, but in a part there is also some indoor areas to be surveyed. Here we can see the two drones used.
01:22
Here we can see the difference between the LIDAR cloud and the optical cloud by MATRIX, where we can see that the worst differences are on these two canopies that we can see here. Here we can see the differences between the two clouds, one made with MATRIX drone and the other with the phantom drone.
01:46
The first example is with the two clouds not calibrated one over the other, and in the second case with calibration. We can see that with calibration, the fit increases. This, we think, may be due to an error in the height of the antenna of the RT-CAPA GPS in the drone.
02:09
Here are the two instruments that were compared from the indoor survey. Here we can see on the left the results of the comparison of the two point clouds
02:23
without calibrating one over the other, and on the right calibrating one over the other. We can see that this visible worsening of the results, we thought that this is because probably the shape of the cloud by SLAM is different from the real shape.
02:45
This may be an effect of drift along the survey with SLAM. To verify our hypothesis, we calibrated the two clouds on a smaller area, and we can see that the fit increased significantly.
03:04
Our conclusion for the outdoor part of our survey is that RTK GPS is very useful and very interesting, but it is very important to calibrate correctly the height of the antenna inside the RTK drone,
03:22
otherwise it can lead to a systematic error. For the indoor part of the survey, we observed that surely the SLAM is more fast because it acquired the same area in minutes while with the classical NOS scanning we need hours,
03:42
but it showed something like a drift along the survey, so it is important to have a ground control point network that anyway is needed also with laser scanning.