Surface segmentation and reconstruction in reverse engineering

Abstract

Reverse Engineering (RE) is the process by which the geometry of a physical part is recreated digitally by digitizing and data modification. RE main difficulty is surface reconstruction. This difficulty increases by increasing part complexity. In this research, a developed reverse engineering approach has been adopted to create a 3D CAD model for power stern. The approach begins from the existing and goes through three main steps (scanning, data pre-processing, and part segmentation and surface reconstruction) and finalize to a readable CAD model. A mathematical representation for the NURB curve has been created to formalize the edges of segments then reconstructing plan and tabulated surfaces according to the segment geometry. Algorithms and computer programs using MATLAB programs have been built to implement the proposed approach and save the data.

Research on circuits detection system based on reverse simulation

“…More and more industries have developed and innovated by using this technology, and there are many researches and applications in automobile manufacturing, aerospace medicine and cultural relic restoration, etc. [1][2][3][4][5][6][7][8][9][10] . However, there is no temperature detection, analog acquisition test and analog output test analysis.…”

Gear Mapping Technology Based on Differential Envelope Principle

“…e measuring link in the network collaborative closed loop manufacturing is no longer a simple error detection procedure, but the process of obtaining reverse of the machining parameters and the calculated quantitative inversion parameter [1,2]. It includes three steps: linear surface data acquisition, data processing, and reconstruction [3]. At present, in addition to the contact scanning method, the common way of data acquisition also includes the noncontact optical scanning and the contact coordinate measurement by the trigger head [4][5][6].…”