Three-dimensional scanner classification and function
1. Three-dimensional scanner classification
Broadly divided into contact three-dimensional scanner and non-contact three-dimensional scanner. Non-contact three-dimensional scanner is divided into raster three-dimensional scanner (also known as photographic three-dimensional scanner) and laser scanner. And raster three-dimensional scanning and white light scanning or blue light scanning, laser scanner and point laser, line laser, surface laser difference.
2. 3D scanner function
① 3D scanner is used to create a point cloud of the geometric surface of the object (pointcloud), these points can be used to interpolate into the surface shape of the object, the more dense the point cloud can be created to create a more accurate model (a process known as 3D reconstruction). If the scanner is able to obtain the surface color, it can further paste a texture map, known as texturemapping, onto the reconstructed surface.
②The 3D scanner can be simulated as a camera, their field of view are reflected in the cone shape, the collection of information are limited to a certain range. The difference between the two is that the camera captures color information, while the 3D scanner measures distance.
Three-dimensional scanner operation note
Three-dimensional scanner operation process should pay attention to (general common operation)
1. Avoid vibration, scanning the environment of the light should not be too strong, the dark room operation will be better;
2. Smooth reflective objects is best to spray the developer;
3. For easy deformation of the object, do not move as much as possible! Objects, you can consider moving the device for scanning;
4. Overlapping parts to minimize the number of scans;
5. Make up the defective places, some of which do not have to go to the full selection;
6. Flexible according to the situation with the help of appropriate auxiliary tools, such as thin objects, can be used to scan with a small object, and finally cut off the small object part;
7. The distance between the measured object and the lens should be adjusted appropriately.
How to buy a 3D scanner
1. Clearly the nature of the work
One scanner can not complete all the scanning work, the manufacturer of the scanner is divided into a variety of specifications for the scanner model, in order to cope with a variety of different scanning tasks. If you buy a large scanner to scan small toys, or buy a small one to scan the whole car, etc., either simply can not do the job, or can not get good results, will cause a huge waste. So before you buy a machine, you must be clear about the content of the scanning work, including the nature of the object to be scanned, the size, accuracy, material and the specific requirements of the output file and so on. The main parameters include: scanning mode, scanning range, measurement accuracy requirements and scanning resolution.
2. Choose the right model
After the purpose is clear, you can go to the manufacturer to consult the specific model of the scanner. It is best to bring 1 or 2 samples to the manufacturer to scan, the scene to see the scanning process and data quality. The contents of the inspection mainly include:
1) the accuracy of the scanning equipment ② the quality of the scanned surface ③ the time needed for the scanning process ④ whether the operation is convenient ⑤ whether the scanned data is complete and so on.
3. Follow-up processing software capability and compatibility
What is the point cloud data obtained from scanning used for? Is it reverse engineering or machining? Is the point cloud data obtained compatible with CAD/CAM software for reverse engineering or machining? Does the scanning software provide function modules such as stitching, manual repair, comparison with CAD model and edge detection? Often these software modules are available for a fee.
4. Whether the corresponding success stories
The purchase of a 3D scanner customers need a complete solution to complete a specific 3D scanning digitization and other tasks. So when choosing equipment, it is important to see whether the manufacturer has similar success stories, preferably with end-user reports on the use of the situation. At present, the need for three-dimensional scanning of the industry and the collar more and more, each field has its own characteristics and requirements, the corresponding success cases reflect the adaptability of the equipment and the manufacturer's R & D capabilities. Finally look at a number of cases and similar industry applications, equipment manufacturers sell more equipment, the longer the time, the more experience accumulated. Such as: Germany's ATOS three-dimensional scanner, fine easy to Xun PTS series three-dimensional scanner.
5. Delivery and training
After the arrival of the scanner, generally by the technicians at home to open the box inspection, such as intact, and then against the contract with a random instruction manual inventory of the machine configuration with a random accessory. And by the technicians on the machine
Installation and commissioning. Installation is complete, with the factory to provide a test object on the machine scanning test, such as the correct completion of the scanning test, the delivery acceptance is complete. Training is mainly to enable the operator to master the scanning method for different scanning objects and scanning techniques.
6. Pre-sale and after-sale service
Perfect and professional pre-sale and after-sale technical support is the key to the key. Purchase of three-dimensional scanner are to be used, generally speaking, are to operate for a long time to run, to ensure that the use of three-dimensional scanner efficiency and life, to create more value for the customer, is the most important purpose of our purchase of equipment. Then the role of after-sales service is the most important, and after-sales more need is a long-term service work. This requires a site visit to confirm the strength of the enterprise, the enterprise's R & D, the enterprise's sense of responsibility is particularly important.