Ed Bachta

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In 1994, Witkin and Heckbert developed a method for interactively modeling implicit surfaces by simultaneously constaining a particle system to lie on an implicit surface and vice-versa. This interface was demonstrated to be effective and easy to use on example models containing a few blobby spheres and cylinders. This system becomes much more difficult to(More)
This paper reports on the linguistic analysis of a tag set of nearly 50,000 tags collected as part of the steve.museum project. The tags describe images of objects in museum collections. We present our results on morphological, part of speech and semantic analysis. We demonstrate that deeper tag processing provides valuable information for organizing and(More)
One of the most significant benefits and challenges of using crowd-sourcing is that it enables the collection of large sets of user-generated tags. However, the first view of this data usually sends both the cataloger (museum or library) and computer scientist running for help: the number of misspellings, the ambiguity of terms, multiple languages, the use(More)
We describe a C++ class hierarchy to support the efficient implementation of implicit surface functions and algorithms. The structure of the hierarchy allows many methods to be defined automatically over a wide range of specific implicit surface types. This structure also provides the infrasture for integrating many various methods and models found in(More)
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