Light field: Difference between revisions
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A '''light field''' (also spelled '''lightfield''') is a fundamental concept in [[optics]] and [[computer graphics]] that describes the amount of [[light]] traveling in every direction through every point in [[space]].<ref name="LevoyHanrahan1996">Levoy, M., & Hanrahan, P. (1996). Light field rendering. ''Proceedings of the 23rd annual conference on Computer graphics and interactive techniques - SIGGRAPH '96'', 31-42.</ref><ref name="Gortler1996">Gortler, S. J., Grzeszczuk, R., Szeliski, R., & Cohen, M. F. (1996). The Lumigraph. ''Proceedings of the 23rd annual conference on Computer graphics and interactive techniques - SIGGRAPH '96'', 43-54.</ref> Essentially, it's a vector function that represents the [[radiance]] of light rays at any position and direction within a given volume or area. Understanding and utilizing light fields is crucial for advancing [[virtual reality]] (VR) and [[augmented reality]] (AR) technologies, as it allows for the capture and reproduction of visual scenes with unprecedented realism, including effects like [[parallax]], [[reflection]]s, [[refraction]]s, and [[refocusing]] after capture, while also aiming to solve critical issues like the [[vergence-accommodation conflict]].<ref name="Ng2005">Ng, R. (2005). Digital Light Field Photography. ''Ph.D. Thesis, Stanford University''.</ref><ref name="Lanman2013">Lanman, D., & Luebke, D. (2013). Near-eye light field displays. ''ACM SIGGRAPH 2013 Talks'', 1-1.</ref> | A '''light field''' (also spelled '''lightfield''') is a fundamental concept in [[optics]] and [[computer graphics]] that describes the amount of [[light]] traveling in every direction through every point in [[space]].<ref name="LevoyHanrahan1996">Levoy, M., & Hanrahan, P. (1996). Light field rendering. ''Proceedings of the 23rd annual conference on Computer graphics and interactive techniques - SIGGRAPH '96'', 31-42.</ref><ref name="Gortler1996">Gortler, S. J., Grzeszczuk, R., Szeliski, R., & Cohen, M. F. (1996). The Lumigraph. ''Proceedings of the 23rd annual conference on Computer graphics and interactive techniques - SIGGRAPH '96'', 43-54.</ref> Essentially, it's a vector function that represents the [[radiance]] of light rays at any position and direction within a given volume or area. Understanding and utilizing light fields is crucial for advancing [[virtual reality]] (VR) and [[augmented reality]] (AR) technologies, as it allows for the capture and reproduction of visual scenes with unprecedented realism, including effects like [[parallax]], [[reflection]]s, [[refraction]]s, and [[refocusing]] after capture, while also aiming to solve critical issues like the [[vergence-accommodation conflict]].<ref name="Ng2005">Ng, R. (2005). Digital Light Field Photography. ''Ph.D. Thesis, Stanford University''.</ref><ref name="Lanman2013">Lanman, D., & Luebke, D. (2013). Near-eye light field displays. ''ACM SIGGRAPH 2013 Talks'', 1-1.</ref> | ||
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* [[Magic Leap]]: Their [[spatial computing]] headsets incorporate light field principles to blend virtual and real content.<ref name="Art1Kress">Kress, B. C., & Chatterjee, I. (2020). "Waveguide combiners for mixed reality headsets: a nanophotonics design perspective." Nanophotonics, 9(11), 3653-3667.</ref><ref name="Art2FXGuide">[https://www.fxguide.com/fxfeatured/light-fields-the-future-of-vr-ar-mr/ fxguide: Light Fields - The Future of VR-AR-MR]</ref> | * [[Magic Leap]]: Their [[spatial computing]] headsets incorporate light field principles to blend virtual and real content.<ref name="Art1Kress">Kress, B. C., & Chatterjee, I. (2020). "Waveguide combiners for mixed reality headsets: a nanophotonics design perspective." Nanophotonics, 9(11), 3653-3667.</ref><ref name="Art2FXGuide">[https://www.fxguide.com/fxfeatured/light-fields-the-future-of-vr-ar-mr/ fxguide: Light Fields - The Future of VR-AR-MR]</ref> | ||
* [[Leia Inc.]]: Creates light field displays for mobile devices.<ref name="Art1Fattal">Fattal, D., Peng, Z., Tran, T., Vo, S., Fiorentino, M., Brug, J., & Beausoleil, R. G. (2013). "A multi-directional backlight for a wide-angle, glasses-free three-dimensional display." Nature, 495(7441), 348-351.</ref> | * [[Leia Inc.]]: Creates light field displays for mobile devices.<ref name="Art1Fattal">Fattal, D., Peng, Z., Tran, T., Vo, S., Fiorentino, M., Brug, J., & Beausoleil, R. G. (2013). "A multi-directional backlight for a wide-angle, glasses-free three-dimensional display." Nature, 495(7441), 348-351.</ref> | ||
* [[CREAL]]: Swiss startup developing near-eye light field displays specifically targeting the VAC issue in AR/VR.<ref name="Art2CrealRoad">[https://www.roadtovr.com/creal-light-field-display-new-immersion-ar/ Road to VR: Hands-on: CREAL's Light-field Display Brings a New Layer of Immersion to AR]</ref><ref name="Art2CrealSite">[https://creal.com/ CREAL: Light-field Display Technology]</ref> | * [[CREAL]]: Swiss startup developing near-eye light field displays specifically targeting the [[VAC]] issue in AR/VR.<ref name="Art2CrealRoad">[https://www.roadtovr.com/creal-light-field-display-new-immersion-ar/ Road to VR: Hands-on: CREAL's Light-field Display Brings a New Layer of Immersion to AR]</ref><ref name="Art2CrealSite">[https://creal.com/ CREAL: Light-field Display Technology]</ref> | ||
* Light Field Lab: Developing large-scale holographic light field displays. | * Light Field Lab: Developing large-scale holographic light field displays. | ||