US 2012/0057755 A1 · METHOD AND SYSTEM FOR CONTROLLING LIGHTING

Abstract

A method is provided to control the lighting ambience in a space by means of a plurality of controllable light sources (16). The light from the light sources (16) is adapted dependent on a position of an object (20) such as a person in the space. Control comprises capturing an image of at least part of said space. From said image whether light from a selected one of the controllable light sources (16) to points in said space shown at respective image positions in said image has been intercepted by the object (20). This may involve image positions where the object casts a shadow or positions that show a surface on the object that is turned away from the light source (16). From the respective image positions where the light has been detected to be intercepted information indicative of a direction of the intercepting object relative to the selected one of the controllable light sources (16) is detected. Position information that indicates a position of the object (20) in said space is updated according to the direction determined from the respective image positions where the light has been detected to be intercepted. A lighting parameter setting of the controllable light sources (16) is adjusted dependent on the updated position information.

Claims15

Dependent claims

A method of controlling lighting of a space by means of a plurality of controllable light sources (16), wherein said controlling depends on a position of an object (20) in the space relative to the controllable light sources (16), the method comprising

receiving an image of at least part of said space;
detecting from said image whether light from a selected one of the controllable light sources (16) to points in said space shown at respective image positions in said image has been intercepted by the object (20);
determining information indicative of a direction of the intercepting object relative to the selected one of the controllable light sources (16) from the respective image positions where the light has been detected to be intercepted;
updating position information that indicates a position of the object (20) in said space, according to the direction determined from the respective image positions where the light has been detected to be intercepted;
enabling to adjust a lighting parameter setting of the controllable light sources (16) dependent on the updated position information.

2 more elements

Dependencies are inferred from the claim text.

Method and system for controlling lighting

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Method and system for controlling lighting

Life of this patent

Abstract

Claims15