US 2016/0081164 A1Published application

Camera-based calibration of an ambience lighting system

AssigneeKoninklijke Philips N.V.

InventorsFREDERIK JAN DE BRUIJN, TOMMASO GRITTI, STEPHANUS JOSEPH JOHANNES NIJSSEN, LORENZO FERI, WEI PIEN LEE, MAARTEN MARINUS JOHANNES WILHELMUS VAN HERPEN

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Abstract

A method for calibrating an ambience lighting system for providing an ambient light effect for a cinema display screen is proposed. The method is based on implementing the ambience lighting system in the form of one or more of coded light (CL) sources. The method then includes processing one or more images of a scene being illuminated by the ambience lighting system to determine, based on the CL embedded into the light output of the individual CL sources, color and/or an intensity of the light generated by the individual CL source. The set of control data for controlling the CL sources to provide the desired ambient light effect is then based not only on the color and/or intensity of image content to be displayed on the cinema display screen, but also on the determined color and/or intensity of the light output of the individual CL sources.

Claims11

Dependent claims

A method for calibrating an ambience lighting system comprising at least a first light source for providing an ambient light effect in an environment comprising the ambience lighting system and a cinema display screen, the first light source configured for providing a first light output comprising a first code, the first code being embedded into the first light output as a first sequence of modulations in one or more characteristics thereof, the method comprising:

after obtaining one or more images of a scene being illuminated by the ambience lighting system, the scene comprising at least the first light output, processing the one or more images to determine, based on the first code embedded into the first light output, at least one of a color and an intensity of the first light output provided by the first light source,
determining at least one of a color and an intensity of an image content to be displayed on the cinema display screen;
determining a set of control data for controlling the first light source to provide the ambient light effect based on the determined at least one of the color and the intensity of the first light output provided by the first light source and on the determined at least one of the color and the intensity of the image content to be displayed on the cinema display screen.

Dependencies are inferred from the claim text.