- Laser 3D Scanning
- Photogrammetry
- Structured Light Scanning
- Computerized Tomography (CT)
Introduction:
3D scanning services refer to the process of creating an image of a physical object in order to accurately represent its geometry on a digital medium. The subject can be anything: a person or an environment.
A 3D model of an object can be created nearly from scrape using 3D modeling software or 3D scanning. 3D scanning generally captures millions of data points from physical objects.
What is 3D Scanning?
3D scanning is the process of exploring the real world, gathering all the data, and shaping it digitally. There are numerous types of 3D scanning, but moment we will concentrate on three of them 3D laser scanning, photogrammetry and structured light scanning. The choice of 3D scanning technology depends on your design or environment.
How Does 3D Scanning Work?
When measurements are collected, information is recorded for a series of data points (point cloud or raster display) in a three-axis global coordinate system.
The data can be processed using various programs to generate results for polygon models, CAD, CAE, CFD, FEA, and parametric reverse engineering. Although there are many ways to acquire 3D data, there are four popular types of 3D scanning:
These 3D scanners are capable of microscopic measurements and can freely generate high-resolution point clouds.
This digital technology is ideal for measuring and simulating complex geometry. 3D scanning services enable measurements and data collection where traditional methods are impractical!
The device aims a laser point or line at the object, and the sensor measures the distance from the surface of the object. Plotting allows you to convert this data into a triangular grid and then into a CAD model.
Photogrammetry typically uses standard and highly customized cameras and specialized algorithms to create 3D models from 2D images. By capturing images from different angles, the software detects common landmarks in the images, often using a scale to combine all the images into a 3D point cloud.
It converts multiple images into a detailed 3D design. You won't get the most accurate results, but if you use the right photogrammetry software, you'll get great results!
The advantages of photogrammetry are recording speed and the ability to record data about the color of the photographed point. It is best for shooting large subjects and scenes.
The disadvantage of this method is that it is entirely dependent on the size and light quality of the images used to reconstruct the 3D image, and dark areas often result in loss of information in the point cloud.
This synthetic light scanning method replaces the single camera position in previous scanning methods with a projector that projects different light patterns onto the subject. Because these patterns are stored, three-dimensional scanning is possible.
Facial or environmental recognition technology uses a combined light scanning process. These types of 3D scanning produce intense point clouds with many sharp edges thanks to the resolution of traditional built-in cameras. Depending on the projection technology used in the system, ambient light levels can sometimes pose a challenge to structural lighting.
A CT scan also begins as a 2D X-ray of different parts of the body. When all these 2D components are combined, the pixels or voxels form a 3D object. A voxel object contains external geometry and internal components and is usually exported as a.stl or other type of 3D mesh for further use.
CT scanning is widely used in industrial settings where field-of-view systems require highly accurate measurements of objects that are not or cannot be seen. CT has many advantages for any normal part, but the disadvantage is that it is generally not applicable to larger and more complex parts or some mixtures.
How to Use 3D Scanning?
If you just want to replicate something that already exists, 3D scanning services can be a simple and easy way to 3D print to create 3D models. Once you have a 3D model, you can add your own changes, which can be an excellent foundation for starting a project. In this process, the object becomes a 3D model, which serves as the base for the 3D work you are creating, as well as for reconstructing, analyzing or sketching ideas.
What is the purpose of these 3D models? This monitoring technology is useful for physicians. It can also help patients create custom prostheses based on 3D scans. It is ideal to use 3D scanning and 3D printing to avoid disrupting the mold and the entire process of manufacturing these molds.
3D scanning has many advantages. This is also a solution to store data that we will need later. 3D scanning has great potential.
Conclusion
Here you can know what is 3D scanning in detail. Manufacturers can use these data points in many ways, including additive manufacturing, digital twins, reverse engineering, dimensional analysis, 3D inspection, and customization for a specific person or tool.
Read More: Where to Find Reliable Bim Scanning Services