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

Borja Vidal; Juan A. Lafuente

doi:10.1117/1.JEI.25.2.023009

28 March 2016 Chroma key without color restrictions based on asynchronous amplitude modulation of background illumination on retroreflective screens

Borja Vidal, Juan A. Lafuente

Author Affiliations +

Journal of Electronic Imaging, Vol. 25, Issue 2, 023009 (March 2016). https://doi.org/10.1117/1.JEI.25.2.023009

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.

Citation Download Citation

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

Published: 28 March 2016

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