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Virtual Dictionary

Direct Light

Direct light, is light that travels straight from the light source to an object in a 3D scene, and so illuminates that object for the viewer. It refers to normal or raytraced lighting equally, and is the easiest type of lighting to generate.

Indirect light by contrast, occurs through radiosity - diffuse illumination or diffuse reflection that occurs when light hitting one object is reflected on to other objects. This adds additional calculation overhead such that every object is treated as a secondary light source much weaker than the first. Understandably, as the number of objects in the scene increases, the calculations required quickly approach infinite levels, especially if secondary or tertiary reflections are to be considered.

For now, direct light is usually the only method considered in real-time rendering, when many frames have to be rendered every second.

See Also: Caustic Shading, Diffuse Interreflection, Progressive Radiosity, Hierarchical Radiosity, Radiosity, Caustics, Lighting Pass, Anisotropic Shading, Raycasting, Raytracing, Frame Rate

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



Related Dictionary Entries for Direct Light:

Direct Light

Indirect Light

PBR

Physically Based Rendering









 

Resources in our database matching the Term Direct Light:

Results by page [1]   [2]   [3]   [4]   [5]   [6]   

Locally Hosted resource
Large Image Display: Animatrix: Beyond: A Broken, Glowing Light
n a broken part of the ruin of an area of heavy file corruption, a light flickers. Upon closer inspection, it's a broken light bulb, hanging from a rusty chain. Yet every so often, the ghost of an intact bulb, shinning brightly, overlays the broken one perfectly.



Locally Hosted resource
VR Cultural Icons: Lightcycles
Light cycles are an icon of VR, that crop up again and again, in all manner of media. Two-wheeled motorcycles that leave a solid wall of light behind them, as a type of exhaust.



Locally Hosted resource
The Real Virtual Light
Virtual Light, a term coined to describe seeing without eyes, is something that has been semi-mythical for decades, whilst research quietly moves forwards. Now, we are starting to see a convergence of the technologies vital to making it a reality.



Announced just one day after the Nintendo Wii itself, at E3 2006?s second day, the Nintendi Wii light-gun attachment connects directly to the back of the Nintendo Wii-mote immersion controller.





Virtual Light is classic Cyberpunk in every sense: it is dark, and gritty, a surreal near-future world that sets you on edge, and both the main characters have sunk as low as it is possible to go, before attempting to change the world for the better.





Locally Hosted resource
Connecting Twitter to a Light Display
An augmented reality exercise for the London Olympics - connect the lights of the London Eye up to twitter, and scan all the feeds simultaneously for mentions of them. Positive toned comments light bulbs. Negative toned comments turn bulbs off.



Locally Hosted resource
Cameras Without Lenses
It sounds odd to think of cameras without lenses to focus the light, because cameras have continually been created with intent to replicate the eye, and the eye has a lens. Without a lens, how do you focus light? Well you don't, but that's ok, because you don't have to.



Locally Hosted resource
Approval sought for Brain Implant
Industry News

BrainGate. By now, its become almost a household name in neuralscience. This short news snippet from November 2003 is part of a series, chronicling the development of this direct interface system.







 

Industry News containing the Term Direct Light:

Results by page [1]   

(31/08/2009)
There is a growing need for biocompatible photonic components for biomedical applications - from in vivo glucose monitoring to detecting harmful viruses or the telltale markers of Alzheimer's. Optical waveguides are of particular interest ...


(14/10/2009)
Starting in mid-2010, new versions of gadgets like cameras, cell phones and computers will be able to talk to each other using Wi-Fi without needing to connect to a wireless network first.

The Wi-Fi Alliance, an industry grou...


(05/05/2009)
Now that neuroscientists have identified the brain's synchronizing mechanism, they have started work on therapies to strengthen attention.

Ultimately, it may be possible to improve your attention by using pulses of light to ...


(02/11/2008)
A waterproof MP3 player built for bright beach days is the first device with a color "e-paper" display, meaning it has no backlighting and thus can be read in direct sunlight.

The display, from Qualcomm, consists of two lay...


(07/12/2012)
Princeton researchers have found a simple and economical way to nearly triple the efficiency of organic solar cells, the cheap and flexible plastic devices that many scientists believe could be the future of solar power.

The ...