Analysis of Engineering Drawings and Raster Map Images by Thomas C. Henderson

By Thomas C. Henderson

This booklet covers updated tools and algorithms for the automatic research of engineering drawings and electronic cartographic maps. The Non-Deterministic Agent method (NDAS) deals a parallel computational method of such picture research. The e-book describes thoughts appropriate for continual and specific wisdom illustration for engineering drawings and electronic maps. It additionally highlights extra particular options, e.g., utilising robotic navigation and mapping tips on how to this challenge. additionally incorporated are extra exact bills of using unsupervised segmentation algorithms to map photographs. ultimately, a lot of these threads are woven jointly in comparable platforms: NDAS and AMAM (Automatic Map research Module).

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Extra resources for Analysis of Engineering Drawings and Raster Map Images

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37) dimension angle rays in: text and inward pointer rays of angle description. (38) dimension angle rays out: text and outward pointer rays of angle description. (39) dimension angle: either of (37) or (38). (40) dimension set: a dimension enclosed by a symmetric line pair or an angle dimension enclosed by an asymmetric line pair. (41) angle set: pair of connected line segments with angle arrow between them. (42) pointer ray extn: a pointer ray extended by a line segment. (43) pointer line extn: a pointer line extended by a line segment.

The first task is to determine which types of drawings exist in the dataset and their formats. Sometimes, other types of information are provided; for example, in a study we performed, files like that shown in Fig. 1 were included; these are best interpreted using standard commercial off-the-shelf OCR software. More typical is the detail drawing shown in Fig. 2. , the specific layout of lines and text structure of the key), and this, in turn, is based on the extraction of text and straight lines in specific areas of the drawing.

9) graphic: set of image segments grouped together and classified as graphic elements. • (10 – 20) unused. Terminal structures are discovered by specific analysis agents which examine both the image and outputs from other agents. 1 shows a labeled instance of each terminal structure. 2 Higher-Level Structures Higher-level structures correspond to the nonterminal symbols in a shape grammar, and can be described by rewrite rules which define sub-structures which comprise the new structure, and the relations that must exist between the sub-structures.

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