Media 000449821: Complete Body
Open Download
Type Mesh
Modality Photogrammetry
Media represents biological specimen
Managed by

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GENERAL DETAILS Field Definitions

Media ID
000449821
Media type
Mesh
Object element or part
complete body
Object represented
Object taxonomy
Lytta sp.
Side
NotApplicable
Orientation
--
Short description
retopologized mesh
Full description
This "retopologized mesh" is a simplified model with quadrangular faces and no explicit texture file. It can be used in combination with its parent "agisoft" model to create high quality, lightweight models for web viewing.
Creator
Ge, Tianyu
Date created
July 27, 2021
Date uploaded
July 11, 2022

FILE OBJECT DETAILS Field Definitions

File name
Retope_VTEC000004847.zip
File format(s)
ZIP archive, OBJ
File size
69.8 KB
Points
1668
Polygons
1666
Map type
--
UV coordinates
True
Vertex color
False
Bounding box dimensions
0.725, 0.552, 0.768
Centroid coordinates
0.002, -0.063, -0.020
Units of point coordinates
--

IMAGE ACQUISITION AND PROCESSING AT A GLANCE Field Definitions

Number of parent media
2
Number of processing events
3 (9 steps)
Modality
Photogrammetry
Device
Nikon D850, VPI University Library (Virginia Polytechnic Institute and State University)

OWNERSHIP AND PERMISSIONS Field Definitions

Data managed by
Data uploaded by
Publication status
Open Download
Download reviewer
IP holder
--
Copyright statement
--
Creative Commons license
--
Morphosource use agreement type
Standard
Permits commercial use
Commercial Use Not Permitted
Permits 3D use
3D Printing Limited
Required archival of published derivatives
On MorphoSource
Funding attribution
Council on Library and Information Resources 697
Publisher
Virginia Polytechnic Institute and State University. University Libraries
Cite as
--
Media preview mode
Interactive/Embeddable
Additional usage agreement
None

IDENTIFIERS AND EXTERNAL LINKS Field Definitions

MorphoSource ARK
MorphoSource DOI
Not assigned
External identifier
--
External media URL
--

IMAGE ACQUISITION AND PROCESSING IN DETAIL

STEP 1: IMAGE ACQUISITION

Physical object VPI:VTEC:VTEC000004847 was imaged to create undeposited raw media.

IMAGING DETAILS Field Definitions

Modality
Photogrammetry
Device facility
VPI University Library (Virginia Polytechnic Institute and State University)
Creator
Saverot, Maureen
Event date
March 10, 2021
Software
--
Description
--
Description attachment
None
Reference attachment
None
Lens
Nikkor Nikon Micro-Nikkor 60mm F/2.8
Other details
Variable focal length / Static light / N/A

STEP 2: IMAGE PROCESSING

Raw media (undeposited) was processed with 1 activity to create derived Media 000449603: Complete Body [PhotogrammetryImageSeries] [Photogram].

Processing Details Field Definitions

Creator
Saverot, Maureen
Event date
March 10, 2021
Software
Camera Raw
Description
Camera with turntable setup with four complete rotations at four different heights, for a total of about 365 images per specimen. First and last images of each rotation height being identical.
Description attachment
None

Processing Activity 1: Crop

Software
Camera Raw
Description
Camera Raw to crop down each rotation (73 images) so that the object comfortably fits in the frame; not so tightly such that the edge of the image touches the object but enough to eliminate extraneous information from the image.

Media produced by this event on MorphoSource

STEP 3: IMAGE PROCESSING

Processing Details Field Definitions

Creator
Ge, Tianyu
Event date
June 20, 2021
Software
Camera Raw
Description
Agisoft Mesh and texture for Lytta sp.
Description attachment
None

Processing Activity 1: Background Removal and/or Masking

Software
Agisoft Metashape
Description

Processing Activity 2: Photos to Sparse Mesh and Depth Map

Software
Description
Agisoft Metashape

Processing Activity 3: Smoothing/Noise Reduction

Software
Description
Agisoft Metashape

Processing Activity 4: Sparse Point Cloud and Depth Map to Dense Point Cloud

Software
Description
Agisoft Metashape

Processing Activity 5: Point Cloud to Mesh

Software
Agisoft Metashape
Description

Processing Activity 6: Smoothing/Noise Reduction

Software
Agisoft Metashape
Description

Processing Activity 7: Mesh and/or Point Cloud Texturing

Software
Agisoft Metashape
Description

Media produced by this event on MorphoSource

STEP 4: IMAGE PROCESSING

Derived Media 000449706: Complete Body [Mesh] [Photogram] was processed with 1 activity to create derived Media 000449821: Complete Body [Mesh] [Photogram] (this media).

Processing Details Field Definitions

Creator
Ge, Tianyu
Event date
July 27, 2021
Software
Camera Raw
Description
Retope mesh is a model without texture with lesser vertices retopologized from the Agisoft mesh
Description attachment
None

Processing Activity 1: Simplification

Software
Autodesk Maya
Description
In Maya, a manual process is used to "drape" a low reolution, quandrangular mesh over the parent "agisoft model". This low resolution, quandrangular mesh then becomes the retopologized mesh.

Media produced by this event on MorphoSource

Media 000449821: Complete Body [Mesh] [Photogram] (this media)