3D forensic reconstruction has evolved from a support tool into a central piece in complex cases. On this occasion, the modeling team has worked on an unusual scenario: a nest. The goal is not only to show the physical space, but to understand the dynamics of the events from a geometric and temporal perspective. Every branch, every texture, and every shadow become data that investigators can analyze without altering the original scene. Precision here is not a luxury; it is a procedural necessity.
From scanner to mesh: the technical workflow 🛠️
The process begins with a high-resolution photogrammetric scan, capturing more than 2,000 images from complementary angles. This data generates a point cloud that, after noise filtering, becomes a polygon mesh optimized for use in animation software. Lighting is reproduced with HDRi captured on site, and textures are projected using automatic UV mapping with manual review of critical areas. The result is exported in Alembic format to maintain consistency between physical simulation layers and organic elements, such as feathers or dried mud present in the original material.
The perfect nest, but without chicks to back it up 🐣
After weeks of rendering, the team achieved a virtual nest so realistic that even the branches seem to have their own opinions. Too bad the birds did not cooperate with the recreation: they left no witnesses or DNA traces. Now the experts debate whether the tilt of a twig is a sign of a struggle or simply the result of an annoying breeze from that afternoon. Meanwhile, the 3D model rotates in a loop before a jury that only asks if they can zoom in to see if there are eggs. The answer is no, but that does not stop their curiosity.