Brian W. Johnson

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This paper presents the design of a three-dimensional data acquisition system based on multiple, single-dimensional optical sensors. The system can operate in any of three modes: (1) the tracking of multiple, independent, point light sources (2) the automatic digitization of opaque surfaces (3) the real-time tracking of an unmarked moving object (e.g.,(More)
The consumption of powder additives applied in a simple powder form has fallen from almost 60 % to below 40% during the last 5 years. This change is not remarkable given the many problems associated with powders, ranging from health & safety to transport, storage and feeding issues. What is more remarkable is that, although a very slight increase in(More)
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