Preface 

Five hundred million years ago, an arthropod occupied the whole ocean and became the overlord of a generation. It was not completely extinct until the Mesozoic era. It was trilobite. In ancient times, it became swallow stone, also known as bat stone. Trilobite body shape is flat and wide, the back is raised in the middle, and both sides are flat. There are two longitudinal grooves on the back, which divide the body into three leaves, so it is named. They have a variety of shapes and sizes, with the longest of 75 cm and the smallest of less than 1 cm. The body is divided into three parts: head, chest and tail. The surface is smooth. The head is wearing semi-circular armor with a compound eye on both sides of the armor. The mouth is born in the center of the ventral surface of the head. Each part of the body is composed of uncertain somites. Each integral segment has a pair of appendages. The first appendage of the head becomes long tentacles and has sensory function.

Fossils are rare treasures that have evolved over thousands and hundreds of millions of years. They are scientific specimens of great significance in the history of biological and human evolution and precious scientific and cultural heritage in the world. Huaguang three-dimensional laser scanning technology has also contributed to the inheritance and development of this historical treasure, and provided tools for fossil data collection and display.

Physical map of trilobite fossil

Practical problem

1. The middle part of the back shell of trilobite fossils is called the axis or central axis, and the left and right sides are called rib leaves or ribs. There are many fine textures on the surface and the position of compound eye is more prominent. It is difficult to obtain complete three-dimensional data with a general three-dimensional scanner.

2. Customers have high requirements for accuracy. They need to establish a database of three-dimensional data of trilobite fossils, which will be used as a 3D printing display of trilobite fossils in the later stage, so that more people can feel the charm of trilobites and the magic of nature.

Physical map of trilobite fossil

Co3d solution

According to the needs of customers and combined with the actual situation, Hualang technical engineers adopt the scheme of Huaguang 3D Holon B71 handheld laser 3D scanning, which not only solves the problems of customers, meets the requirements of customers, but also contributes to the research of historical treasures.

The Holon B71 handheld laser three-dimensional scanner is used to quickly scan the whole in the standard mode, with a speed of 1.35 million times / s and an accuracy of 0.02 mm. The fine mode is used to scan the fine texture, which can quickly obtain the surface three-dimensional data without contacting the object, and realize the complete display of three-dimensional modeling, local details and texture features, Restore the primordial and authenticity of trilobite fossils to the greatest extent.

STL data of trilobite fossils

Trilobite fossils with obvious texture features were scanned with Huaguang 3D handheld blue laser scanner

With the help of desktop and auxiliary objects, there is no need to paste points on the surface of cultural relics;

Pure blue light technology, efficient scanning and accurate data;

STL data of trilobite fossils