Structured light

Structured light

Structured light is the process of projecting a known pattern of pixels (often grids or horizontal bars) on to a scene. The way that these deform when striking surfaces allows vision systems to calculate the depth and surface information of the objects in the scene, as used in structured light 3D scanners.

Invisible Structured Light is a technique to utilise structured light without interfering with other computer vision tasks for which the projected pattern will be confusing. Example methods include the use of infrared light or of extremely high framerates alternating between two exact opposite patterns.

ee also

*Stereoscopy
*3D scanner#Structured light
*Structured Light 3D Scanner

Papers

* [http://community.middlebury.edu/~schar/papers/structlight/ High-accuracy stereo depth maps using structured light]
* [http://pagesperso-orange.fr/fofi/Downloads/Fofi_EI2004.pdf A comparative study on invisible structured light]

External links

* [http://www.stockeryale.com/i/lasers/structured_light.htm What is Structured Light?]


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