Kind of digital technology
That is, scanning the kind of regional planning and ensure accuracy, study the impact of measurement accuracy when scanning the various factors to ensure the accuracy and the method used and measures to check and verify the accuracy of methods in how to scan the region is zoned comprehensive consider scanning accuracy , Scanning efficiency and surface fitting reconstruction of the fitting precision, surface-of-stitching; parts benchmark guarantee the accuracy of measurement problems. The new FlexME of Drake Technology Co., Ltd represents a new generation of reverse engineering (RE) and Computer Aided Inspection (CAI) system has been has begun to enter China. Different from the traditional FlexME system not only has high accuracy, speed, flexibility, and Range, lightweight and easy to move, without the use of special environmental requirements, can be used for the reverse engineering machinery, mold-made computer-aided detection, product processing and assembly-line or off-line detection.

Survey data preprocessing
That is the cloud data-processing technology: high-density, high-capacity point cloud data processing technologies, including multiple scan point cloud the issue of Mosaic, scanning point cloud data to simplify the problem, cloud-like feature extraction of data and so on.

Surface reconstruction
Do research on how to choose a suitable method of mathematics, fitting modified algorithms, control parameters and surface reconstruction methods to get high-quality, high-precision surface model. Based on neural network technology in more recent report, Jiang has built such as using a neural network model and the corresponding rapid learning algorithm used in surface reconstruction. The model can be effectively removed approaching surface and enter data points in the "bad" points. Zhang Wei made based on neural network, such as the triangular grid method can be effective in maintaining the original data points of the topology at the same time achieving the desired characteristics of the scale and precision of the triangular grid post-reverse engineering of key technologies and research.

The evaluation and testing of reconstruction surface
On the surface of the evaluation index, testing methods and tools that. In SURFACER and CAD software, use NURBS to express surface. It can be very complicated shape that the surface, but the surface, that can not operate very intuitive way, it is difficult to evaluate the surface, testing and modification. Use of graphics center of mass and inertia minimum spindle positioning as a benchmark, measured free surface can be realized with the standard CAD model of the automatic alignment, known CAD model for the realization of the free on-line detection of surface provides a theoretical basis. However, this method of online testing free surface need to overcome a number of factors, such as CMM actual speed measurement system, the actual measurement accuracy of the path of conversion as well as its own part in the work piece at a high field of view outside the region at the center to the location and The impact of measurement accuracy.