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Chroma key without color restrictions based on asynchronous amplitude modulation of background illumination on retroreflective screens

[+] Author Affiliations
Borja Vidal, Juan A. Lafuente

Universitat Politècnica de València (Escuela Politécnica Superior de Gandía and Nanophotonics Technology Center), c/Paranimf, 1 46370 Gandia, Spain

J. Electron. Imaging. 25(2), 023009 (Mar 28, 2016). doi:10.1117/1.JEI.25.2.023009
History: Received October 8, 2015; Accepted March 2, 2016
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Abstract.  A simple technique to avoid color limitations in image capture systems based on chroma key video composition using retroreflective screens and light-emitting diodes (LED) rings is proposed and demonstrated. The combination of an asynchronous temporal modulation onto the background illumination and simple image processing removes the usual restrictions on foreground colors in the scene. The technique removes technical constraints in stage composition, allowing its design to be purely based on artistic grounds. Since it only requires adding a very simple electronic circuit to widely used chroma keying hardware based on retroreflective screens, the technique is easily applicable to TV and filming studios.

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Citation

Borja Vidal and Juan A. Lafuente
"Chroma key without color restrictions based on asynchronous amplitude modulation of background illumination on retroreflective screens", J. Electron. Imaging. 25(2), 023009 (Mar 28, 2016). ; http://dx.doi.org/10.1117/1.JEI.25.2.023009


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