Handling sectional views in volume-based approach to automatically construct 3D solid from 2D views

Dimri, J.; Gurumoorthy, B.

doi:10.1109/gmap.2004.1290048

Cited by 6 publications

(26 citation statements)

References 13 publications

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“…In the proposed method an existing volume based approach [8] [3] has been used and extended for obtaining candidate blocks from the 2D views of an assembly. Conditions are defined for grouping/combining these candidate blocks into different 3D parts of the assembly.…”

Section: Present Workmentioning

confidence: 99%

Volume Based Approach to Extract 3-D Parts from 2D Assembly Drawing

Bhushan¹,

Gurumoorthy²

2006

Computer-Aided Design and Applications

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This paper extends an earlier volume-based approach to automatically reconstruct 3D parts from the 2D orthographic views of an assembly drawing. Most of the work in automatic reconstruction of 3D solids using volume-based approach from 2D orthographic views has been done only for single component drawings. The proposed method identifies elementary solids called candidate blocks from the orthographic views and then combines these solids to obtain different parts in the assembly. The candidate blocks are combined on the basis of some conditions defined based on the validity of solids and characteristics of an assembly. Earlier efforts towards addressing multi-part assembly drawing either require additional inputs in the form of labeling of parts in the drawing, additional special cross-sectional views or are restricted to assemblies with standard parts. Results have been achieved for some typical engineering assembly drawings. Future work will address extension of this algorithm to assembly drawings with sectional views.Keywords: assembly drawings, 3D parts, orthographic views, volume-based INTRODUCTIONConventionally an engineering drawing has been a means to store information about complex 3D parts in 2D form. The drawing contains all the required information about the 3D object in an accurate, concise and systematic way. In industries, there is huge legacy of data and product information available in the form of engineering drawings (either in the hard copy form of blue prints of drawings or in the digital/soft form generated by available computer-aided drafting tools), which are continuously used in new product development. This form of shape representation continues to increase due to its familiarity for users and consequent ease in manipulation. Understanding engineering drawing requires a thorough knowledge of the rules and conventions of engineering drawing and industry/organization specific protocols. As the complexity of the drawing increases (sectional views, auxiliary views), the skills required for interpretation also increases. A 3D solid model is becoming essential for other design tasks such as CFD/FEM analysis, rapid prototyping, and simulation. Automatic construction of 3D solid model from 2D drawing is of great importance given the penetration of 3D models in product development tasks and the specialized skill required to manually interpret the drawing. Automatic conversion of 2D views of engineering drawings into 3D model has been a challenging and popular problem in CAD area. Since 1980, many methods for reconstruction of solid model from orthographic views have been proposed and implemented. The approach for automatic reconstruction of a solid model from a 2D engineering drawing can be broadly classified as:

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Section: Present Workmentioning

confidence: 99%

Volume Based Approach to Extract 3-D Parts from 2D Assembly Drawing

Bhushan¹,

Gurumoorthy²

2006

Computer-Aided Design and Applications

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“…Chen [16] √ √ √ * Shum [18] √ √ √ * Soni [19] √ √ [20] √ √ √ * Lee [22] √ √ 出连续的几何信息,对于曲面,不能明确定义点与形体之间的关系 [5] ;另一方面,投影过程中损失了形体的深度信息,仅仅利用视图中的二维元素生成的线框模型,必然包含大量的假元 [1] .因此,面向线框的重建算法处理复杂拓扑结构的曲面体,需要应用穷举式或启发式搜索,花费大量的处理时间,且无法保证结果的有效性. …”

Section: 研究现状分析unclassified

Research on Solid Reconstruction from Engineering Drawings

Gong¹

2008

Journal of Software

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Solid reconstruction from engineering drawings is one of the efficient technologies to product solid models, which has become one of the important research topics in both computer graphics and artificial intelligence.The problem of solid reconstruction from engineering drawings is introduced. The taxonomy for solid reconstruction techniques is presented with the typical algorithms reviewed. After comparing the application areas of the algorithms, the open research issues are analyzed. Finally, future work in the research field is also pointed out.

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“…Otherwise, for the drawings with sectional views, the cutting planes corresponding to sections are established according to the sectional relations among the folded views. Folded sections can be accordingly imported to the reconstruction process, and the object can be retrieved by the approaches that considers sectional views, such as [4].…”

Section: Overviewmentioning

confidence: 99%

“…Nevertheless, their method can not directly handle a sectional view without the regular view in the same view direction, which excludes most of actual drawings. More recently, Dimri et al [4] described a CSG oriented method to explicitly handle sectional views. They presented an algorithm to identify additional ontoformations from sectional views considering the changes in terms of edges and loops in sectional views as compared to regular views.…”

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confidence: 99%

Identification of sections from engineering drawings based on evidence theory

Gong

Zhang

Jiang

et al. 2010

Computer-Aided Design

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View identification is the basal process for solid reconstruction from engineering drawings. A new method is presented to label various views from a section-involved drawing and identify geometric planes through the object at which the sections are to be located. In the approach, a graph representation is developed for describing multiple relationships among various views in the 2D drawing space, and a reasoning technique based on evidence theory is implemented to validate view relations that are used to fold views and sections in the 3D object space. This is the first automated approach which can handle multiple sections in diverse arrangements, especially accommodating the aligned section for the first time. Experimental results are given to show that the proposed solution makes a breakthrough in the field and builds a promising basis for further expansibility, although it is not a complete one.

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Handling sectional views in volume-based approach to automatically construct 3D solid from 2D views

Abstract: Abstract

Cited by 6 publications

References 13 publications

Volume Based Approach to Extract 3-D Parts from 2D Assembly Drawing

Volume Based Approach to Extract 3-D Parts from 2D Assembly Drawing

Research on Solid Reconstruction from Engineering Drawings

Identification of sections from engineering drawings based on evidence theory

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