Empty Space Skipping

Empty space skipping is an optimisation method for volume rendering techniques. With volume rendering, non-mesh data is rendered. Typically, slices of 3D data that are assembled together, such that which there is data right the way through any cross section of the model.

This is computationally expensive to render. Empty space skipping is thus any means of identifying completely empty space ? usually by marking it with a 3D primitive shape. This space is then passed over or skipped when it comes to the intricate rendering calculations for the entire volume.

See Also: Volume Rendering

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

Empty Space Skipping

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A Sensor Web for Runways
Sweeping an empty patch of ground to ensure it remains empty, seems an odd job for a complex sensor web. Yet, if a passenger jet strikes debris during landing or take off, it spells disaster for all aboard.

Messing with Tangent Space
Tangent space is sometimes called texture space. It is the co-ordinate systems for one face of any 3D skinned model. Use of tangent space, which this tutorial covers, is necessary to properly map a texture onto part of a 3D shape.

Augmented Reality, Designed for Space, Half a Century Behind Everyone Else
The European Space Agency (ESA) have released details of a new augmented reality interface they have been testing and how it actually benefits astronauts when in space. Quite scarily they actually believe they are the first organisation to implement an AR interface, according to their press release.

Virtual Geographies: Bodies, Space and Relations

This tome, written long before the Metaverse Roadmap, was one of the first large works to discuss how virtual spaces create entirely new kinds of space, and require mapping constructs and methodologies utterly alien to what had come before.

The Drive for Storage Space and Speed
More music; more films; more photography; more, more, more. More of everything seems drive this fetish for storage space and power. Yet is it just more, more, more, or can more actually equal better in VR?

A Dark World
It is beyond dark, it is pitch black. No motes of light, to glittering beams, no nothing. You blink and cannot tell if you did just blink or not. Away in the distance a humming begins. You hear it, and turn towards it. It is coming from your left, and down a ways. Beyond that you cannot tell. Reaching out, you grasp at empty air. The fear rises as you reach out for something, anything to grasp on, and through some flailing, you find a smooth wall.

Sensor Web: A look at an Internet in Physical Space: AR Orientation
The Sensor web, is a long-anticipated faced of an augmented world. It is, in theory at least, a huge web of interconnected sensors, actuators, RFID, GPS, specialised routing controls, and augmented sensory hardware, all wired together into an immense web in physical space, facilitating Augmented Reality applications.

Spatial Representation of a Virtual World
How do you perceive space and spatial relationships between objects in a virtual environment. Rather easily if you are setting out to replicate the physical world. But that is too easy, it loses so many of the true advantages of VR, where space is irrelevant, and every room can be a TARDIS. This article looks at mapping that kind of a mess, beginning with text worlds, where such spatial irrelevancy is at its highest.

Large Image Display: AWGate 5.0: Enzo Loves You
ActiveWorlds Gate 5.0 launched on November the 26th 2009, in readiness for the launch of ActiveWorlds 5.0 on December the 1st 2009. This is one of the more disturbing images. For, there are eight rooms off of the main concourse, most of which detailing expansion possibilities and newcomer help for ActiveWorlds. Given persistent losses in the userbase, and various political tensions between the users and developers, it seems that there was not enough content to fill all eight rooms, and two of the ones greeting you initially are empty.

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