ANALYSIS OF THE MAIN METHODS OF DRAWINGS RECOGNITION AND THE POSSIBILITIES OF TRANSFORMATION 2D IN 3D

Abstract

The article presents an analysis of the main methods for recognizing drawings and the possibilities of transforming two-dimensional models (2D) into three-dimensional models (3D). Despite the rapid development of IT, the question of accuracy and speed of transformation of two-dimensional models into three-dimensional ones remains open. As machine design technologies and corresponding automated decision-making systems (CAD) develop, the number of methods and models that can potentially be used in the task of drawing recognition and 2D to 3D transformation is rapidly increasing. Today, there are quite a large number of methods for recognizing drawings and converting them into a three-dimensional model, but each of them has a certain number of shortcomings. Therefore, there is a need to carry out a comprehensive analysis of these methods, which can potentially be applied in the context of solving problems of drawing recognition and 2D to 3D transformation. It should be noted that there is a contradiction between the traditional procedure for preparing drawing documentation on paper media until the 80s and 90s of the 20th century and the new methods of 3D modelling that have been developed since the mid-90s. This gives designers truly unlimited opportunities to prepare design and technical documentation, without focusing on the problem of preparing design and drawing documentation and the features of entering input data. Application software significantly facilitates this process. Note that most 3D systems (for example, software products Autodesk TinkerCAD, DesignSpark Mechanical, FreeCAD, Autodesk AutoCAD, ZBrush, Blender, etc.) use approaches that allow synthesizing a frame or boundary representation of an object modelled in space. Professional systems (for example Autodesk 3ds Max, Autodesk Maya) use generalized models of spatial objects. This idea assumes that the designers have appropriate information arrays, which a priori should correspond to all projections of the object in the three main planes.