Dov Dori
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Cross Ref
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Index Terms
- Dimensioning analysis: toward automatic understanding of engineering drawings
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Reviews
Adina Raclariu
The interpretation of multiview line drawings has been investigated intensively. This paper presents a preprocessing step that should precede the application of any three-dimensional reconstruction algorithm from a set of views provided by a manually or automatically prepared engineering machine drawing. The previously known algorithms overlook the presence of annotation entities, such as dimensions, tolerances, production specifications, and administrative instructions in practically all engineering drawings. Thus, it is important to be able to distinguish between the two types of entities and to use the annotation entities to enhance the information expressed by the geometric entities before removing them. This research discovers the necessary conditions to properly dimension a view of an object. On the basis of the graph theory developed, Dori describes a procedure for verifying that the dimension set is correct. The criteria for determining if the dimensioning is misidentified or misdetected are clearly established. This paper presents a useful technique for automatically dimensioning and detecting the dimension set of an engineering drawing. It has great theoretical and practical importance.
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