Illumination (lighting)

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Topic: Illumination (lighting)

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	Ambient Lighting - GameDev.Net Discussion Forums
		Ambient illumination is applied to all objects whether shadowed or not, it is the lowest possible value for lighting in a given scene.
		Traditional realtime per-vertex or per-pixel lighting usually only models "direct" illumination, i.e.
		The ambient colour that is given to materials in the traditional material shading pipeline then specifies the degree to which a given material is lit by this ambient lighting.
	www.gamedev.net /community/forums/viewreply.asp?ID=1842302

	TechnicalAcademicInstitutes
		Commission Internationale de L'eclairage [International Commission on Illumination] The International Commission on Illumination is an organization devoted to international cooperation and exchange of information among its member countries on all matters relating to the science and art of lighting.
		The Illuminating Engineering Society of North America, founded in 1906, is the recognized technical authority on illumination.
		The mission of the International Association of Lighting Designers is to serve worldwide members by promoting the practice of excellent lighting.
	www.sylvania.com /AboutUs/EnergyAndEnvironment/OSIEnvironment/AffiliateOrganizations/TechnicalAcademicInstitutes (332 words)

	Publications
		On the one hand, better lighting models for local illumination (assuming point light sources but evaluated per pixel) were demonstrated to be amenable to hardware implementation.
		During rendering, the illumination map for the object is computed according to the current lighting situation and then filtered by the precomputed kernels.
		Dynamic, local lighting is handled by sampling it close to the object every frame; the object can also be rigidly rotated with respect to the lighting and vice versa.
	graphics.csail.mit.edu /~kautz/publications (332 words)

	OSDG: IEQ
		Illumination Engineering Society, VDT Lighting: IES Recommended Practices for Lighting Offices Containing Computer Visual Display Terminals, IES RP-24, New York: Illumination Engineering Society.
		Illumination Engineering Society, American National Standard Practice for Industrial Lighting, RP-7, New York: Illumination Engineering Society.
		Illumination Engineering Society, Office Lighting: American National Standard Practice, ANSI/IES RP-1-1982, New York: Illumination Engineering Society.
	www.oaklandpw.com /OSDG/OSDG/resources4_6.html (84 words)

	Global Illumination: Exteriors
		This DVD covers a general introduction to the principles of Global Illumination, which are essential to the understanding of this specialized form of lighting.
		In this lecture on the subject of Global Illumination lighting techniques, Christopher Nichols discusses the subject of exterior lighting.
		While the series primarily uses V-Ray as the render engine in a 3ds Max environment, those using other GI renderers will also benefit from the conceptual techniques described.
	www.thegnomonworkshop.com /dvds/cni01.html (309 words)

	Global Illumination: Interiors
		With Global Illumination: Interiors, you will see the rendering of an interior space in a whole new light.
		Christopher focuses on the concept of digital sets and explores issues of interior lighting for GI, including the variety of light sources that can be used, as well as how space plays an important role in lighting.
		Continuing from his first DVD, Global Illumination: Exteriors, Christopher Nichols explains how interior global illumination differs from exterior GI.
	www.thegnomonworkshop.com /dvds/cni02.html (314 words)

	VEX Shading Contexts
		Returns the illumination for specular highlights using different lighting models.
		With a roughness of 0, the Oren-Nayar lighting model is equivalent to the Lambertian model.
		Inside the surface context, it is possible to loop through all light sources in the scene computing their illumination and shadows.
	oldsite.vislab.usyd.edu.au /users/manuals/sfx/houdini/vex/shading.html (2989 words)

	Astronomical Leage Announcements
		The International Commission on Illumination (CIE) prepares reports and standards on all matters relating to the science and art of lighting.
		The CIE is recognized as the international standards writing organization responsible for standards in the science of light and all forms of lighting.
		Conference: International Commission on Illumination 25th Quadrennial Session
	www.astroleague.org /al/general/news/alnews002.htm (210 words)

	Global illumination - Wikipedia, the free encyclopedia
		These algorithms model diffuse inter-reflection which is a very important part of global illumination, however most of these (excluding radiosity) also model specular inter-reflection too which makes them more accurate algorithms to solve the lighting equation and provide a more realistic globally illuminated scene.
		In real-time 3D graphics, global illumination is sometimes approximated by an "ambient" term in the lighting equation.
		Global illumination algorithms used in 3D computer graphics are those which, when determining the light falling on a surface, take into account not only the light which has taken a path directly from a light source (direct illumination), but also light which has undergone reflection from other surfaces in the world (indirect illumination).
	en.wikipedia.org /wiki/Global_illumination (386 words)

	Lighting
		If the light is increased or decreased in intensity, the area of complete illumination is correspondingly altered, and the area of diminishing intensity is proportional.
		Because most of these lights do not cast shadows, their effect will be applied to all surfaces similar to the omnidirectional illumination from the atmosphere.
		Specifically, the light found on a surface is equal to the intensity of the projecting light multiplied by the sine of the incident light.
	www.nd.edu /~gdenby/lyte.html (386 words)

	Depth Map based Ambient Occlusion
		The second pass is a key light pass, in which you place your conventional CG lights to create any strongly directional illumination and also any cast shadows, also using the regular surface shaders that you'd use if you were lighting the shot conventionally.
		Once the ambient occlusion pass has been rendered, the indirect lighting contribution to the scene is then calculated by applying an environment map of the scene into which the object is to be integrated.
		This ambient light is attenuated by the previously rendered ambient occlusion pass, thus the top of my head would receive a great deal of illumination, whilst my armpit would remain darker.
	www.andrew-whitehurst.net /amb_occlude.html (386 words)

	Faking Global Illumination in Houdini: Globaltk
		Here is a quick and easy way to get fairly nice global illumination style lighting using Vmantra and Houdini.
		Here are some other sites that can provide a good introduction to the theory and techniques of global illumination:
		Also has a Houdini plug-in to allow you to create global lighting set-up from an HDR image.
	www.lewkiw.com /html/global.html (1350 words)

	Untitled Document
		With low-key lighting, the key light is positioned low with respect to the figure or object, creating an intense illumination.
		With high-key lighting, the key light is high above the figure, so the illumination is less strong.
		Lighting cast from a position near the camera and tending to eliminate shadows.
	shea.mit.edu /ramparts/commentaryguides/glossary/filmlexicon.htm (3618 words)

	BTTF References in Film Art Textbook - BTTF.com's Space-Time Continuum - Back to the Future Forums
		High-key lighting is an overall approach to illumination that can suggest different lighting conditions or times of day.
		High-key lighting is not used simply to render a brightly lit situation, such as a dazzling ballroom or a sunny afternoon.
		"Three-point lighting was particularly well suited for the high-key lighting used in classical Hollywood cinema and other filmmaking traditions.
	www.bttf.com /forums/showthread.php?t=17918 (748 words)

	Television Production: Special Lighting Situations
		If multiple keys are needed to achieve a high enough level of illumination over the set, they should be positioned as close together as possible to reduce the problem of multiple shadows and multiple catchlights in eyes.
		Keep in mind the sources of light that may be suggested by the setting—visible table lamps, windows, etc. Place the key lights so they will be consistent with these suggested sources of illumination.
		Background lights are not shown—and they may not be needed because of the accumulaton of ambient light on the background.
	www.cybercollege.com /tvp034.htm (1820 words)

	Maurizio Rossi Lighting Design - Lighting Design Firm - IALD, IESNA, Lighting Design Professionals
		Maurizio Rossi Lighting Design, IALD, IESNA, specific professional skills include mechanical and optical design of fixtures, calculations, realization of models and mock-ups, fixtures tests, sun lighting reports and dimmer equipment programming.
		projects where knowledge of the creative, economic, and technical aspects of the architectural illumination are required.
		The design of total illumination and control systems for
	www.stelfair.com /mrld/Welcome.html (1820 words)

	Pointer.doc
		TC 8-04, Adaptation Under Mixed Illumination Conditions, is investigating the state of adaptation of the visual system when comparing soft-copy images on self-luminous displays and hard copy images viewed under various ambient lighting conditions.
		CIE is a technical, scientific and cultural non-profit organisation whose primary objective is to provide an international forum for the discussion of all matters relating to the science, technology and art in the fields of light and lighting, and for the interchange of information in these fields between different countries.
		At the 15th Session of the CIE held in Vienna, Austria in 1963, agreement was reached on what became known as the 1964 supplementary standard observer, based on colour-matching data obtained using a 10 degree field.
	www.iscc.org /aic2001/abstracts/symposium/How_CIE/Pointer.doc (1337 words)

	Lighting in TutorGig Encyclopedia
		Lighting refers to the devices or techniques used for illumination, usually referring to artificial light sources such as lamp s or flashlight s.
		In lighting for film, theatre and still photography, a cucoloris occasionally also spelled kookaloris is a device for casting shadows to produce patterned illumination.
		Lighting farts is the practice of igniting the gases produced by flatulence.
	www.tutorgig.com /es/Lighting (1337 words)

	BUBL LINK: Interior design
		An organisation devoted to international cooperation and exchange of information among its member countries on all matters relating to the science and art of lighting.
		Offers guidance on how to choose a building services engineer, and information about services such as heating, ventilating, air-conditioning, lighting, security, fire protection, lifts, information technology highways (within buildings), and sanitation.
		Annotated links to selected Internet resources covering the fields of fashion, interior, and industrial design.
	bubl.ac.uk /link/i/interiordesign.htm (180 words)

	Lithonia Lighting - The best value in lighting
		CIE: (Commission Internationale de l'Eclairage) - The International Commission on Illumination - An organization based in Europe which creates standards for lighting, science, design and application.
	www.lithonia.com /library/glossary/glossaryItem.asp?Gterm=CIE (34 words)

	A2Z : Science & Technology : Engineering : Electrical Engineering : Associations & Organizations
		The International Commission on Illumination is composed of a world-wide group of member nations committed to the cooperation "on all matters relating to the science and art of lighting." Find publications and standards relating to light and lighting from vision to photometry at this site.
		The commission promotes international cooperation on all questions of standardization and related matters in the fields of electrical and electronic engineering.
		This site details aspects of the International Electrotechnical Commission, located in Geneva, Switzerland, and founded in 1906.
	jove.prohosting.com /fima59/discrete/science/241.htm (633 words)

	Encyclopedia: Phong lighting
		Phong shading is used indiscriminately to describe both an illumination model and an interpolation method in 3D computer graphics.
		In some modern hardware, variants of this algorithm are called "pixel shading." It usually means that the lighting calculations can be done per-pixel, and that the lighting variables are interpolated across the triangle.
		Phong reflection can produce a certain degree of realism in three-dimensional objects by combining three elements - diffuse, specular and ambient for each considered point on a surface.
	www.nationmaster.com /encyclopedia/Phong-lighting (633 words)

	Emergency Lighting: No More Ugly Duckling
		The emergency lighting unit must provide initial illumination that's no less than an average of 1 footcandle (fc), or 10 lux, and a minimum at any point of 0.1 fc, or 1lux measured along the path of egress at floor level.
		A vandal-resistant "always on" emergency lighting unit, using one or two compact fluorescent lamps with a polycarbonate diffuser, is a natural choice for apartment house hallways, stairwells, and exit locations.
		Exit lights are, or can be, an integral part of the rest of the emergency lighting system.
	ecmweb.com /mag/electric_emergency_lighting_no (1601 words)

	Brian Cook: High-Efficiency Lighting
		The ambient lighting provides overall illumination and is kept at a modest level, while brighter task lighting is provided in the local work areas.
		Lighting management systems such as this are of particular value to building managers, as they can monitor the lighting status throughout an entire building.
		Whereas the incandescent reflector lamp gives a light output of 1000 lumens at 100 watts (an efficacy of 10 lumens/watt) and has a life of 1000 hours, the Genura lamp gives a light output of 1100 lumens at 23 watts (an efficacy of 48 lumens/watt) and has a life of 10,000 hours.
	solstice.crest.org /efficiency/lighting/cookBrian (1601 words)

	Saha Sprague Limited - Lighting Efficiency
		Another innovative way to save energy consumed by lighting is by automatically switching them off when illumination is not required.
		Lighting has the potential for businesses and the government to reduce energy waste because it is an easy and inexpensive problem to fix, with a quick return on investment.
		It is estimated that up to 30% of energy consumed by lighting could be saved just by using such automatic switching systems.
	www.sahasprague.com /products/lighting/lighting.htm (1601 words)

	Ambient Lighting
		The contribution from ambient lighting is independent of the direction of the light or the orientation of the surface.
		The diffuse component is dependent on the angle of illumination to the surface normal, intensity of the light source, and the color of the surface due to texturing, per-face and/or per-vertex diffuse coloring.
		Lighting a virtual world is simple and complex effort.
	www.e3dnews.com /e3d/Issues/200406-Jun/tom.html (1601 words)

	microwatt.txt
		As daylight illumination increases, the photosensor and lighting controller combination reduces output of the fixtures over a continuous range to the minimum set power level and, if sufficient daylight is available to off.
		Lighting controller shall be microprocessor based to provide the logic necessary to combine the inputs from photosensors, occupant sensors, manual controls, fire/security systems, demand controllers, BAS and/or timeclocks.
		The light will go on to provide a visual signal that the output of the lighting controller is at 100%, indicating power is not being reduced.
	www.lutron.com /onespec/cutsheets/bpspecs/specs/microwatt.txt (1493 words)

	DMX (lighting) -- Facts, Info, and Encyclopedia article
		diagnostic feedback from the fixtures to the controller and extend the DMX512A standard to encompass bidirectional communication between the lighting controller and lighting fixtures.
		intensity ((A rheostat that varies the current through an electric light in order to control the level of illumination) dimmers) it is now used to control moving lights, video projection systems and stage machinery.
		The operator is presented with a single consistent control method for controlling lights which require very different DMX512 values to achieve the same effect.
	www.absoluteastronomy.com /encyclopedia/d/dm/dmx_(lighting)2.htm (1501 words)

	SRP: Security lighting -- available fixtures
		The light is a square fixture on a bracket that allows the light to be positioned to provide direct illumination.
		The Streamlined style is used both in general purpose street lighting and in residential lighting.
		For more information and to set up an appointment to evaluate your site for lighting, e-mail or call SRP's Maintenance Engineering/Lighting Division at (602) 236-8465.
	www.srpnet.com /electric/home/securityfixtures.aspx (321 words)

	Antique Gas Lighting RichardMillerLamps.Com
		Gas Lighting was the illumination of choice for many consumers in heavily populated
		Although most very early 19th century gas fixtures in use here were manufactured in England and France, by mid-century the United States was producing an amazing array of fixtures; elaborate hanging chandeliers, sconces, and figural newel post/portable table lamps designed to compliment every Victorian sub-style.
		Rococo, Renaissance, Moorish, and Eastlake styled lights in finely cast and detailed bronze, brass and patinated white metal could be purchased from manufactures such as Starr Fellows, Cornelius, Mitchell Vance, and many many others.
	www.richardmillerlamps.com /gaslighting.htm (321 words)

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Topic: Illumination (lighting)

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In the News (Mon 4 Jun 12)