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'''Image-based lighting''' ('''IBL''') is a [[3D rendering]] technique which involves capturing an |
'''Image-based lighting''' ('''IBL''') is a [[3D rendering]] technique which involves capturing an omnidirectional representation of real-world light information as an [[image]], typically using a [[Omnidirectional (360-degree) camera|360° camera]]. This image is then projected onto a dome or sphere analogously to [[environment mapping]], and this is used to simulate the lighting for the objects in the scene. This allows highly detailed real-world lighting to be used to light a scene, instead of trying to accurately model illumination using an existing rendering technique.<ref name="USCICT">{{cite web|last1=Debevec|first1=Paul|title=Image-Based Lighting|url=http://ict.usc.edu/pubs/Image-Based%20Lighting.pdf|website=[[Institute for Creative Technologies|USC Institute for Creative Technologies]]|publisher=[[University of Southern California]]|accessdate=21 February 2016}}</ref> |
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Image-based lighting |
Image-based lighting often uses [[high-dynamic-range imaging]] for greater realism, though this is not universal. |
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According to [[Fxguide]], "Almost all modern rendering software offers some type of image-based lighting, though the exact terminology used in the system may vary."<ref name="FXGAOR">{{cite web|last1=Seymour|first1=Mike|title=The Art of Rendering|url=https://www.fxguide.com/featured/the-art-of-rendering/|website=[[Fxguide]]|accessdate=21 February 2016}}</ref> |
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| ⚫ | Image-based lighting is also |
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[[Filmmaking|Motion picture production]] makes use of image-based lighting, and it can be seen in movies like |
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''[[Monsters University]]'', ''[[The Great Gatsby (2013 film)|The Great Gatsby]]'', and ''[[Iron Man 2]]''.<ref name="FXGsor">{{cite web|last1=Seymour|first1=Mike|title=The State of Rendering - Part 1|url=https://www.fxguide.com/featured/the-state-of-rendering/#IBL|website=[[Fxguide]]|accessdate=February 23, 2016}}</ref> |
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*[http://ict.usc.edu/publications/ibl-tutorial-cga2002.pdf Tutorial] |
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One reference capture technique, sometimes referred to as "wickmania" by camera technicians and VFX supervisors, involves shooting footage of two small spheres (one matte, one of a light-reflective material) on a physical set. This is used when the IBL will be later applied to an animated object or character that interacts with live objects or characters under the same lighting conditions. |
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*''[[Forza Motorsport 4]]'' <ref name="Eurogamer">{{cite web|last1=Leadbetter|first1=Richard|title=Tech Analysis: Forza Motorsport 4|url=http://www.eurogamer.net/articles/digitalfoundry-tech-analysis-forza-motorsport-4?page=2|website=[[Eurogamer]]|accessdate=21 February 2016}}</ref> |
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*''[[Rise of the Tomb Raider]]'' <ref name="Kotaku">{{cite news|last1=Walton|first1=Steven|title=Rise of the Tomb Raider|url=http://kotaku.com/rise-of-the-tomb-raider-pc-benchmarks-steep-demands-1756350619|accessdate=21 February 2016|work=[[Kotaku]]|date=January 2, 2016}}</ref> |
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*''[[Into the Stars (video game)|Into the Stars]]'' <ref name="80L">{{cite web|title=INTO THE STARS: THE DEVELOPMENT JOURNEY|url=http://80.lv/articles/into-the-stars-the-development-journey/|website=80 Level|accessdate=21 February 2016}}</ref> |
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*''[[SuperTuxKart]]'' <ref name="STK">{{cite web|title=Antarctica: Overview|url=https://supertuxkart.net/Antarctica:_Overview|website=SuperTuxKart.net|accessdate=12 January 2018}}</ref> |
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Image-based lighting is also a built-in feature of the [[Crytek]] [[CryEngine]] video game engine.<ref name="Develop">{{cite news|last1=Batchelor|first1=James|title=Engine firm highlights key features of its powerful game-making technology|url=http://www.develop-online.net/news/video-crytek-s-gdc-2015-tech-showcase/0203949|accessdate=21 February 2016|work=[[Develop (UK magazine)|Develop]]|date=4 March 2015}}</ref> |
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==See also== |
==See also== |
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*[[Ambient occlusion]] |
* [[Ambient occlusion]] |
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*[[ |
* [[Relighting]] |
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{{reflist}} |
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==External links== |
==External links== |
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*[http://www.daionet.gr.jp/~masa/rthdribl/ Real-Time HDR Image-Based Lighting Demo] |
*[http://www.daionet.gr.jp/~masa/rthdribl/ Real-Time HDR Image-Based Lighting Demo] |
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*[https://web.archive.org/web/20160410233502/http://www.sunandblackcat.com//tipFullView.php?l=eng&topicid=31 Lighting models: Image-based lighting] |
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[[Category: |
[[Category:Global illumination algorithms]] |
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[[zh:图像照明]] |
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Revision as of 17:50, 20 June 2024
Image-based lighting (IBL) is a 3D rendering technique which involves capturing an omnidirectional representation of real-world light information as an image, typically using a 360° camera. This image is then projected onto a dome or sphere analogously to environment mapping, and this is used to simulate the lighting for the objects in the scene. This allows highly detailed real-world lighting to be used to light a scene, instead of trying to accurately model illumination using an existing rendering technique.[1]
Image-based lighting often uses high-dynamic-range imaging for greater realism, though this is not universal.
According to Fxguide, "Almost all modern rendering software offers some type of image-based lighting, though the exact terminology used in the system may vary."[2]
Motion picture production makes use of image-based lighting, and it can be seen in movies like Monsters University, The Great Gatsby, and Iron Man 2.[3]
One reference capture technique, sometimes referred to as "wickmania" by camera technicians and VFX supervisors, involves shooting footage of two small spheres (one matte, one of a light-reflective material) on a physical set. This is used when the IBL will be later applied to an animated object or character that interacts with live objects or characters under the same lighting conditions.
Image-based lighting is also used in some video games as video game consoles and personal computers start to have the computational resources to render scenes in real time using this technique. This technique is used in:
Image-based lighting is also a built-in feature of the Crytek CryEngine video game engine.[8]
See also
References
- ^ Debevec, Paul. "Image-Based Lighting" (PDF). USC Institute for Creative Technologies. University of Southern California. Retrieved 21 February 2016.
- ^ Seymour, Mike. "The Art of Rendering". Fxguide. Retrieved 21 February 2016.
- ^ Seymour, Mike. "The State of Rendering - Part 1". Fxguide. Retrieved February 23, 2016.
- ^ Leadbetter, Richard. "Tech Analysis: Forza Motorsport 4". Eurogamer. Retrieved 21 February 2016.
- ^ Walton, Steven (January 2, 2016). "Rise of the Tomb Raider". Kotaku. Retrieved 21 February 2016.
- ^ "INTO THE STARS: THE DEVELOPMENT JOURNEY". 80 Level. Retrieved 21 February 2016.
- ^ "Antarctica: Overview". SuperTuxKart.net. Retrieved 12 January 2018.
- ^ Batchelor, James (4 March 2015). "Engine firm highlights key features of its powerful game-making technology". Develop. Retrieved 21 February 2016.