format obj – Geospatial Modeling & Visualization

Rapidform: Basic Digitizing of archaeological features from scan data; Annotated 3D models

Rachel — Tue, 25 Oct 2011 17:33:07 +0000

[wptabs style=”wpui-alma” mode=”vertical”] [wptabtitle] GENERAL CONSIDERATIONS[/wptabtitle] [wptabcontent]

Before beginning a digitizing project in Rapidform consider what final products are required. Archaeological projects might require…

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[wptabtitle] A 2D TECHNICAL ELEVATION OR PLAN[/wptabtitle] [wptabcontent]A 2D technical elevation or plan.

Technical elevations and plans utilize standardized conventions to represent 3D objects in 2D and include both metrical information and annotations. The multi-phase plan familiar from excavation is a classic example of technical drawing in archaeology.

Fig. 1: A 2D site plan (Image credit: Dobie and Evans 2010, p. 59, fig. 86)[/wptabcontent]

[wptabtitle] AN INTERPRETIVE DRAWING[/wptabtitle] [wptabcontent]An interpretive drawing.

An interpretive drawing is a representation of what the object, feature or structure looks like, emphasizing the salient aspects of the object which make it recognizable rather than metrics.

Fig. 2: An interpretive drawing of an inscription (top) and a vessel (bottom) from Gabii, Italy. (Image Credit: Katie Huntley, Gabii Project)[/wptabcontent]

[wptabtitle] AN ANNOTATED 3D MODEL[/wptabtitle] [wptabcontent]An annotated 3D model.

Rather than creating a simplified vectorized model of 3D scan data, annotations and measurements are placed directly onto the scan data. The scan data is cleaned but remains undifferentiated in either a point cloud or mesh format.

Fig. 3: 3d model of vessel from scan data, with user annotations added. (Image Credit: CAST, Virtual Hampson Museum, http://hampson.cast.uark.edu/)

Annotations on scan data can indicate interpretations, like the presence of abrasions, or measurements, or vector overlays on salient features.[/wptabcontent]

[wptabtitle] AN ANNOTATED 3D INTERPRETIVE MODEL[/wptabtitle] [wptabcontent]An annotated 3D interpretive model.

An interpretive 3D model is analogous to the 2D technical plan. It uses breaklines and solids to represent the form of the object and can include annotations and metrical information. Normally it will not include the original scan or mesh data.

Fig. 4: A solid model generated from scan data with individual features such as planks rendered as discrete objects. (Image credit: Traditional boats of Ireland Project, http://tradboats.ie/project/)[/wptabcontent]

[wptabtitle] THE DIGITIZING WORKFLOW[/wptabtitle] [wptabcontent]The digitizing workflow for each of these final products will be slightly different. This workflow covers the steps for the creation of an annotated 3D model.
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[wptabtitle] CONTINUE TO…[/wptabtitle] [wptabcontent]Continue to step one of a digitizing project.[/wptabcontent] [/wptabs]

Virtual Hampson Museum, Arkansas USA – Artifact BR_1503

caitlin — Thu, 09 Jun 2011 17:43:54 +0000

This data were collected as part of the Virtual Hampson Museum Project. The Virtual Hampson Museum contains nearly 450 3D digital artifacts from the collections located at Hampson Archeological Museum State Park in Wilson, AR. These artifacts were scanned in full color with the Konica Minolta VIVID 9i laser scanner and were processed in the Polyworks and Rapidform processing suites. To see more data, be sure and visit the Virtual Hampson Museum.

Data are available for five object in
1) an original high resolution mesh (OBJ format)
2) a decimated low resolution mesh (3D PDF).

Download high resolution OBJ file for BR_1503

Download lower resolution PDF file for BR_1503

Please note. This data is distributed under a Creative Commons 3.0 License (seehttp://creativecommons.org/licenses/by-nc/3.0/ for the full license). You are free to share and remix these data under the condition that you include attribution as provided here. You may not use the data or products in a commercial purpose without additional approvals. Please attach the following credit to all data and products developed there from:

Credit:

Arkansas Natural and Cultural Resources Council, Hampson Museum Staff, Arkansas Department of Parks and Tourism, Arkansas Archeological Survey, Center for Advanced Spatial Technologies, University of Arkansas

Longer version:

The Hampson Virtual Museum was made possible by two granta from the Arkansas Natural and Cultural Resources Council in June 2007and 2008. Assistance provided by Randy Dennis – ANCRC Program Manager. Additional assistance was provided by Arkansas Department of Parks and Tourism and the staff of the Hampson Museum including: Marlon Mowdy – Park Superintendent, Hampson Archaeological Museum State Park; Richard Davies – Executive Director; Greg Butts – State Parks Director. The following staff of the Arkansas Archeological Survey provided invaluable assistance: Robert Mainfort – Artifact descriptions, 3D Nodena visualization advice; Tom Green – Director. The Center for Advance Spatial Technologies Virtual Hampson Museum Development Team was made up of: Angie Payne – Project Director, 3D Artist of Upper Nodena Village; Snow Winters-Sasser – 3D Artist of Upper Nodena Village; Keenan Cole – Flash website and database development; Katie Simon – Artifact scanning, processing, and Access database developer; Stephanie Sullivan – Artifact processing; Scott Smallwood – Artifact scanning and processing; Christopher Goodmaster – Artifact scanning and processing; Caitlin Stevens – Artifact processing; Duncan McKinnon – Artifact scanning; Fred Limp – CAST Director and Principal Investigator, Author of Nodena 3D Visualization FAQ Section