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at Hippos of the Decapolis (Sussita)
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Research Phase/ Sabbatical

Finalizing the model

Mark Schuler (administrator) August 13, 2021

After several weeks of writing, I have this week focused on moving the lidar-based model into a final form. The first finalized iteration includes the entire point cloud and show the northeast insulae in the context of surrounding features.

NIP in context
NIP with basilica to the west.

I then spent several days cropping and cleaning up the point cloud to show only the northeast insulae.

northeast insulae
Northeast insulae

One can orbit and zoom in the model to get at details of the excavation.

Northeast Church
Northeast Church

Even fine details are viewable.

South wall and niche from the diakonikon.

There are two ways of building 3D models that we use on the excavation. These examples are made using the lidar methodology. Lidar, which stands for Light Detection and Ranging, is a remote-sensing method that uses light in the form of a pulsed laser to measure ranges (variable distances) to an object. These light pulses generate precise, three-dimensional information about the object.

The second method is photogrammetry. Photogrammetry is the science and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring and interpreting photographic images. It extracts three-dimensional measurements from two-dimensional data (i.e. images); for example, the distance between two points that lie on a plane parallel to the photographic image plane can be determined by measuring their distance on the image.

Here are two examples of each, the first produced with lidar and the second produced with photogrammetry.

Libar model of the House of Tyche
Lidar of the House of Tyche
Photogrammetry of the House of Tyche

The lidar model moves more easily into CAD applications

141 scan worlds are used to create the lidar model.

Scan worlds

The registration report attests to the reliability of the end products.

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‹ History of the Excavation › Lidar-based model

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