3D-Render.nl 3D-Render.nl
  • About / Contact
  • Assets

Blackbird Eggshell 3D Scan

By Sebastiaan on June 25, 2023
  • Blackbird Eggshell - 3D Model

Item details

File Size: 232.1 MiB
Face Count: 252.1K
License: CC0
Download from Blenderkit
Support my Work

Blackbird Eggshell 3D Scan

As I was exploring the forest in the spring, I came across a broken blackbird eggshell that had been left behind by a blackbird hatchling. It was a beautiful sight, with delicate patterns and colors that contrasted with the greenery around it. Naturally as a nature loving guy, I wanted to preserve its intricate shape and colors.

To do so, I used photogrammetry along with the Dark Void Technique. This technique requires taking a series of photos of an object from various angles in a dark setting along with cross polarization. As a result, the eggshell on the photos will look like it is floating in a dark void, with (most) shadows and reflections removed. This way the photogrammetry software cannot get confused by background elements or reflections. Thus it outputs a higher resolution model and textures.

To make this model, I took 175 photos of the blackbird eggshell using a tripod and a remote shutter. I also used a polarizing filter on my camera lens and a polarizing film on my flash to achieve cross polarization. However, I had to be careful with the eggshell as it was quite fragile. If the eggshell broke or slightly cracked, the entire dataset was useless.

To get a good model, I made sure to cover every angle and detail of the eggshell, rotating it carefully on a small turntable. Then I used Agisoft Metashape to have it create a 3D model of the eggshell along with 8K textures.

The model is simply decimated from 2 million faces to about 250K faces. Any missing textures were eye balled with Affinity Photo and Blender. As a bonus, this model is free to use!

License

CC0

  • Free to use for Commercial and Personal Projects.
  • You do not need to give credit or attribution when using them (although it is appreciated).
  • You can redistribute them, share them around, include them when sharing your own work, or even in a product you sell.
NaturePhotogrammetry
Posted in Free Assets.
Share
PreviousForest Lane with Beech Trees in the Netherlands
NextOvercast Forest Clearing in the Netherlands

Leave a Reply Cancel reply

Your email address will not be published. Required fields are marked *

Related Posts

  • Spring Forest HDRI in the Netherlands
    May 31, 2023

    Spring Forest HDRI in the Netherlands

    Enjoy a free 10K Forest HDRI of a green forest in spring. Enhance your 3D scenes with natural beauty and realism.

  • Flashlight Texture - Light Cookie
    October 22, 2022

    Free (Flashlight) Light Cookies

    You can use (Flashlight) Light cookies to create interesting light effects in your scene. This can really influence the mood in your scene. So it’s a simple, yet powerful tool.

  • Silver Birch - High Resolution 3D Scan
    January 15, 2023

    Free Silver Birch 3D Scan

    I made this high quality Silver Birch model, for free. The model is retopologized and has 8K (baked) textures to create a good looking asset.

  • Oak Tree Bark 3D Scan - Quercus Robur
    July 18, 2023

    Free 3D Scan of Oak Tree Bark (Quercus Robur)

    Download a realistic and detailed 3D scan of oak tree bark with 12K textures and different LODs. Free to use under CC0 license.

  • Privacy Policy
  • Instagram
  • Twitter
  • LinkedIn
© 2025 3D-Render.nl - All Rights Reserved
  • About / Contact
  • Assets
Manage Cookie Consent
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes. The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Manage options Manage services Manage {vendor_count} vendors Read more about these purposes
View preferences
{title} {title} {title}