3D Model Reconstruction from Two Orthographic Views using Fuzzy Surface Analysis

Sadegh Sadeghi,Hamid Haghshenas Gorgani,Alireza Jahantigh Pak

doi:10.29333/ejosdr/5726

Abstract

The need for revision, the difficulty of visualization, and the impossibility of using 2D drawings as the input of manufacturing machines make us attempt to acquire a 3D model from 2D engineering drawings. However, the main problem in this process is that we encounter many potential uncertainties. In this paper, to overcome this problem, we used the fuzzy logic as a mathematical tool based on knowledge of an expert. One of the most outstanding advantages of using the fuzzy logic is that uncertainty in related equivalent elements in different orthographic views is reduced. Another important feature of this method is that only two orthographic views are used to reconstruct the 3D model, while in previous methods, three orthographic views were used. Reducing the limitations of reconstruction of 3D models will result lower cost because of simulation of production processes on a 3D model and direct connection to CAD/CAM Systems, conservation of natural resources and more security for documents by maintaining drawings in computer memory, improved education quality and increased health level as a result of better visualization using 3D Object which will ultimately lead to sustainable development.

Highlights

Since the 18th century, when the projection theory and the descriptive geometry were introduced and used to solve engineering problems, 2D drawings were established in engineering design processes (Jeon et al, 2016; Lee and Han, 2005)
It leads to sustainable development that is essential for the modern economy (Elnashaie et al, 2018)
Most contemporary products are described using 2D drawings (Wang and Grinstein, 1993), since revising older product designs is a necessity, there are some unavoidable limitations to this type of drawing, some of which are as follows: Gorgani et al / 3D Model Reconstruction from Two Orthographic Views

Summary

INTRODUCTION

Since the 18th century, when the projection theory and the descriptive geometry were introduced and used to solve engineering problems, 2D drawings were established in engineering design processes (Jeon et al, 2016; Lee and Han, 2005). Another difference with the other method is that here we do not perform the reverse process for the line as the first element and the polygon as the equivalent and MMMMMMMMMMMMMMMMMMMMMM is, not calculated. As we know from expert knowledge, against each corner of the polygon, there should be an intersection point over the equivalent line If such a point exists for corner number i, there is a zero in column i of matrix DDDDDDDDDDDD.

VH L M

CONCLUSION