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Virtual Dictionary

Visible Surface Determination

Visible surface determination or VSD is a similar process to hidden surface determination. The difference is subtle.

Hidden surface determination, also known as hidden surface removal, visible surface determination or occlusion culling, is simply a method of determining in a 3D environment filled with objects of various types, transparencies and distances, which surfaces and parts of surfaces are not visible from a certain viewpoint or viewpoints.

Visible surface determination performs exactly the same task, but instead of marking the hidden areas to throw away, it marks the visible areas to keep. The end result is identical. Once the objects or parts of objects in a 3D environment that are completely obscured by other objects from the point of view of the user?s viewpoint are determined, they can be removed without problem from the rendering process.

Below, we offer a selection of links from our resource databases which may match this term.

Related Dictionary Entries for Visible Surface Determination:

Hidden Surface Determination

Hider Algorithm

Visible Surface Determination



Resources in our database matching the Term Visible Surface Determination:

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Open-Source, Multitouch Surface
At the start of May 2008, Engineers at Eyebeam, an engineering and design firm based in New York, created a scaled-down open-source version of Microsoft Surface, called Cubit.

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Embodiment: We React to Exposed Teeth Faster than Other Emotional Displays
Researchers from Germany have discovered strong evidence that with humans, picking faces out of a crowd has a lot less to do with the shape of the face, or the expression upon that face, and a lot more to do with whether the teeth are visible or not.

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Displaying SmartPhones: Mini-Projector Over iWear?
An interactive projection system, building on the virtual keyboard, offers a second type of augmented reality display for the smartphone - Enlarged projection onto any surface.

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Fitting Prosthetics Snugly over Time
Researchers at the Fraunhofer Institute for Surface Engineering and Thin Films IST in Braunschweig, Germany have developed a sensor system that fits into a prosthesis to analyse gait over time.

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Ahl al-trab
A creature from worldwide mythology, included for content within the virtual. The Ahl al-trab come from Islamic folklore. Living in burrow-homes just, literally just, below the surface of the Saharan sands, These humanoid creatures are tiny; practically flightless pixies.

Linked resource
Nuts and Bolts
Much of the work in launching a new world, is spent on creating the fundamental technologies that lay under the surface: Databases, daemons, graphical APIs, you name it. All of these have been written before, and continue to be written, improved and perfected now. Why write your own, when great ones are available, pre-made, and ready for you to build from?

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Neuroprosthetics Powered by the Brain
Powering a neuroprosthetic is a tricky issue. As most of these devices are implanted either on the surface of the brain, or deep inside its folds, it is not a trivial matter to pop it out and change the battery. But, what if the same sugar that feeds the brain, could also feed the prosthetic?

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Reactive Silver Ink Allows Reliable Printed Electronics
One of the key issues when printing electronic circuits on the fly, is ensuring reliability. You don't wish to be in the situation where you have to go over the new circuitry by hand to look for places the conductive ink has not affixed to the surface properly, not if you are making complex 3D shapes with internal circuitry, and aiming to keep the price as low as possible.

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Large Image Display: Making a Bespoke Jaw
The making of a bespoke prosthetic jaw from a patient's existing medical data is one of those things that seems both easy and obvious on the surface, but one which is frought with implementation issues when you get right down to it. Could it really be as simple as laying down on a CT bed, and letting the computer do the rest?


Industry News containing the Term Visible Surface Determination:

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Researchers at Chalmers University of Technology have built a very simple nanoantenna that directs red and blue colours in opposite directions, even though the antenna is smaller than the wavelength of light. The findings – published in t...

The coming age of lorries that drive themselves or robots that perform surgery is fraught with legal and ethical issues, says a new UK report. The Royal Academy of Engineering says that automated freight transport could be on the roads in j...

"Luminos" developed by University of Potsdam researchers can be stacked to form complicated structures on top of a Microsoft Surface screen, and the computer can map the building as it grows.

Each Lumino block has a pattern...

Researchers from Extreme Photonix and the University of Cincinnati have combined water and oil in a technology that promises bright, energy-efficient displays.

The electrowetting device contains water and oil that compete f...

Exacting laser projection technology, in the form of a melding of both projection technology, and machine vision to accurately gauge distance and surface shape, first appeared in mid 2005 in the shape of the virtual laser keyboard. Since t...