Introduction 1. History 2. Modelling techniques 3. Views 4. Design and industry 5. Science and simulation 6. Art 7. Feature films 8. Television 9. Video games and home computing.

Creative Computer Graphics

IEEEComputer Graphics and Applications

An algorithm for recognizing dimensions in engineering machine drawings that employs a syntactic/geometric approach along with a specific deterministic finite automation (DFA) is presented and demonstrated. First, the problem of distinguishing object from interpretation lines is addressed. Then, dimension-sets, their components, kinds, and types are defined and illustrated. A DFA called the dimension-set profiler is used to determine the profile of a given dimension-set. The resulting profile is used to obtain a sketch which is parsed by the dimensioning grammar to yield a conceptual web. This web, in turn, is converted into a geometric web by substituting components labeling nodes by their line description. These line descriptions are compared to the lines in the actual dimension-set. A certain degree of redundancy is introduced to ascertain valid recognition.

A syntactic geometric approach to recognition of dimensions in engineering machine drawings

Cities are microcosms of societies, worlds within worlds, which repeat themselves atdifferent spatial scales and over different time horizons In this essay, we argue that suchrecursion is taken to an entirely new level in the digital age where we can represent citiesnumerically, embed them within computers, scale and distort their representations so thatwe can embed them within one another, even believing them to be ?computers? in theirown right We begin with the conundrum of recursion, showing how its occurrence incities through spatial similarity at different scales, leads to worlds within worlds Weillustrate these ideas with a large-scale digital representation of the core of a world city,London, showing how we can generate different realizations of the city for differentpurposes We embed these representations within one another, building virtual worlds,moving from the material to the digital and back again, using the digital model torepresent the material world in different ways, and finally printing ? fabricating themodel Our message is that digital representation opens a cornucopia of possibilities inrepresentation and communication through a variety of devices which in turn can beembedded in the city, Escher-like, and which indeed are rapidly becoming the city

background or methods

Imagining the recursive city: explorations in urban simulacra

Image synthesis has become a major area of research in computer graphics. Since the early seventies, many articles and books have been published on the various facets of this topic. This bibliography lists works in this field form the beginning to the present.

An Indexed Bibliography on Image Synthesis

A mechanical engineering drawing is a set of orthogonal 2D views of a 3D object. To establish vision-based communication among CAD/CAM systems and to implement 3D reconstruction, drawings need to be preprocessed to exploit the information conveyed by the annotation before separating it from the geometry. A rationale for a machine drawing understanding system is first argued. A context-free dimensioning grammar provides a basis for a self-structural, syntax-directed pattern recognition scheme. It employs learning the characteristic parameters of arrowheads and text from a detected sample, and using them to detect the entire population. Syntactic considerations that significantly decrease the search space help predict the spatial location and orientation of potential components. The underlying ideas of the scheme may be applicable to a broad scope of tasks involving intelligent recognition.

Creative Computer Graphics

Citations

IEEEComputer Graphics and Applications

A syntactic geometric approach to recognition of dimensions in engineering machine drawings

Imagining the recursive city: explorations in urban simulacra

An Indexed Bibliography on Image Synthesis

Self-Structural Syntax-Directed Pattern Recognition of Dimensioning Components in Engineering Drawings

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