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Section 4 Case Study: Virtual Hampson Museum#
One of the digital artifacts, Ark_HM_Headpot, has been selected to show an example project metadata set below.
4.3.1 Acquisitional Metadata
The project level metadata below would be completed once for the entire project.
Project Level Metadata | Sample Entry |
Project Name | Virtual Hampson Museum Project |
Name of monument, survey area, or object | Ark_HM_Headpot |
Monument/Object Number | NA |
Survey Location | Hampson Archeological Museum State Park; Wilson, AR |
Survey Date(s) of survey (Month/day/year) | 6-APR-2008 |
Survey Conditions | Indoors |
Scanner Details | Konica Minolta VIVID 9i; mm |
Company/Operator Name | Center for Advanced Spatial Technologies, Christopher Goodmaster |
Control data collected? | N |
Turntable used? | Y |
RGB Data Capture | Y. The VIVID 9i uses internal RGB capture. A three point lighting system was used to illuminate the object from the top and from both sides; this minimized shadows on the object. Each light in the system had 1-3 white light (5000k) flicker free fluorescent bulbs. The number of bulbs that were used to illuminate each artifact varied depending on ambient light conditions and object color. |
Estimated Data Resolution | 0.35mm |
Total Number of Scans in Project | 18 |
Archived Datasets | Original scans, registered dataset, premesh dataset, Mesh dataset, Decimated mesh dataset |
Planimetric map of scan coverage areas | N |
Additional project notes | NA |
Images from survey | Y. Ark_HM_Headpot_001.jpg, Ark_HM_Headpot_003, Ark_HM_Headpot_004.jpg, Arka_HM_006.jpg, Ark_HM_Headpot_009.jpg, Ark_HM_headpot_010.jpg |
The information in the scan level metadata table below would be completed for every scan in the project. This information could easily be created in a spreadsheet using the metadata elements as column headings and a row per scan.
Scan Level Metadata | Sample Entry |
Scan Filename | Ark_HM_Headpot_scan1.txt |
Scan Transformation Matrix | Ark_HM_Headpot_scan1_matrix.txt |
Name of monument/object area | Ark_HM_Headpot |
Survey Date | 6-APR-2008 |
Scan Number | 1 of 18 |
Number of Points in Scan | 160909 |
Additional Scan Notes | NA |
Scanner Technology | Triangulation |
Data resolution | 0.37 |
Lense or FOV Details | Tele lense |
Registration Metadata | Sample Entry |
Name of Registered Dataset | Ark_HM_Headpot_GR.txt |
Total number of scans used in Registration/Total number acquired | 18 of 18 |
Global Registration Error in units (2 units precision) | 0.06 |
Total number of points in final registration | 3156822 |
Pre-Mesh Metadata | Sample Entry |
Name of Pre-Mesh Dataset | Ark_HM_Headpot_GRE.txt |
Number of points in file | 995742 |
Point Deletion Summary | Overlap reduction was computed in Polyworks software. Following overlap reduction, floating data points were also deleted. Data remnants from overlap reduction were also deleted. |
Overlap Reduction (Y/N) (optional) | Y |
Smoothing (Y/N) (optional) | N |
Subsampling (Y/N) (optional) | N |
Color Editions (Y/N) (optional) | N |
Mesh Creation and Editing Metadata | Sample Entry |
Name of Mesh Dataset | Ark_HM_Headpot.obj |
Estimated mesh spacing | .8 |
Holes Filled (Y/N) | Y |
Smoothing (Y/N) | Y |
Color Editions (Y/N) (optional) | N |
Healing/despiking (Y/N) (optional) | Y |
Total Triangle count (post editing) | 647169 |
RGB Color Included (Y/N) | Y |
Data Reduction (Y/N) | N |
Coordinate System Adjustment (Y/N) | N |
Additional processing notes | NA |
Decimated Mesh Metadata | Sample Entry |
Name of decimated mesh dataset | Ark_HM_Headpot_25k.obj |
Total Original Triangle Count | 647169 |
Decimated Triangle Count | 25000 |
RGB Color preserved from original dataset | Y |
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