As an example in [10] the authors adopt the Binary Space Partitioning Technique to operate a selection of the visible obstacles from a prescribed reflector.
It is, however, important to be aware of these secondary barriers since the presence of primary barriers (A-C) might represent other, less visible, obstacles related to psychological (D), social (E) or change process (H) issues.
"The gas prices are probably the most visible of the obstacles that the customers face," Denis McGlynn, the president and chief officer at Dover International Speedway, said in a telephone interview last week.
We investigate the problem of determining visible regions given a set of (moving) obstacles and a (moving) vantage point.
They can brake faster, swerve quicker and anticipate changes in road conditions that are imperceptible to the human eye (such as obstacles beyond the visible range of headlights).
Outlines of placed portals are visible through walls and other obstacles for easy location.
On Friday, those obstacles were perhaps most visible in Algeria, where thousands of police officers in riot gear mobilized in the center of the capital, Algiers.
Two obstacles were used, a full obstacle (entire surface of obstacle was visible) and a perimeter obstacle (only top and side edges were visible).
At Omaha Beach, parts of the Mulberry harbour are still visible, and a few of the beach obstacles remain.
The differences on farm trade, and the obstacles to any progress, were fully visible last week at a two-day meeting in Japan of agriculture ministers from the so-called Quint group America, the EU, Japan, Canada and Australia.
