Recognition of dimensioning text in engineering drawings is an essential part of the drawing understanding process, as this text provides the exact dimensions and tolerances of the object described in the drawing. We consider engineering drawings produced according to either ISO or ANSI drafting standards. Text segmentation and recognition are preceded by orthogonal zig-zag vectorization, arc s...

According to the shortcoming of traditional artificial management mine-maps, the solutions of dynamic management digital mine-maps were proposed. Analyzing of the main tasks and characteristics in lifecycle stages of mining engineering maps, based on the idea and meaning of lifecycle, first we divided mine-maps lifecycle into seven stages, such as design drawing task assignation, design drawing...

Interpretation of paper drawings has received a good deal of attention over the last decade. Progress has also been made in related areas such as direct interpretation of human drawings (HCI), search and indexing of graphics databases, and knowledge representation in the domain of graphics and drawing understanding. One of the most interesting applications in this domain is the analysis of sema...

Abst rac t . Functional parts i.e. mechanical parts with intrinsic functionality such as screws, hinges and gears, are appealing high level entities to be used in line drawing understanding systems. This is because their functionality can be used by a reasoning agent to infer surrounding objects and because they are usually drawn following standards making them easier to be detected. In this ch...

Polymer fiber drawing creates fibers with enhanced thermal conductivity and strength compared to bulk polymer because drawing aligns the molecular chains. I optimize the polymer fiber drawing method in order to achieve polymer fibers that are drawn to lengths exceeding 1cm and develop a method to cut and store them for future experimental purposes. With lengths exceeding 1cm, starting with leng...

This paper describes the way knowledge is organized and used in our CELESSTIN document interpretation system, which is a blackboard-based, multi-expert prototype system for extracting functional CAD information from scanned engineering drawings. After a general overview of the way CELESSTIN is implemented, we describe in detail several of the specialists cooperating to perform the high-level dr...

This article presents a 3-D multiplicative finite strain model for cold drawing (necking) in engineering thermoplastics. Amorphous as well as semi-crystalline polymers are considered. The notion of intermediate (local) stress-free configuration, that is associated with the multiplicative decomposition of the deformation gradient, is shown to provide an appropriate framework for the modeling and...

This study investigates the effectiveness of computer-mediated Engineering Drawing instruction in improving spatial ability namely spatial visualisation and mental rotation. A multi factorial quasi experimental design study was employed involving a cohort of 138, 20 year old average undergraduates. Three interventional treatments were administered, namely Interactive Engineering Drawing Trainer...

When the data is processed from the digitized drawThis paper presents how the recently presented Randomized IIough Transform (RHT) method can be used as a part of an engineering drawing vectorization system. The RHT algorithm is capable of recognizing and fitting straight line segments, circles, arcs and conic curve segments, in preprocessed images (eg. after noise removal, void filling). The t...

This paper reports on the results of a survey conducted within the Department of Design and Technology, Loughborough University, UK, in response to increasing concern over the quality and effective use of 2D modelling by design undergraduates at all levels. A survey, in the form of a questionnaire supported by ongoing tutorials, was conducted in an attempt to establish the underlying reasons wh...