Image-based lighting

1. A method of searching an image database for images to be used in rendering lighting scene in an environment by multiple luminaires within the environment, the method comprising:

receiving a search trigger comprising at least one indication of a user preference;

identifying at least a position of two or more of the multiple luminaires relative to each other; and

responsive to receiving said search trigger, searching the image database to identify the at least one image as having at least one image feature which corresponds to the relative position of the two or more of the luminaires relative to each other for use in rendering the lighting scene by the two or more luminaires,

wherein said searching comprises determining an infrastructure keyword from the identified position, and searching the image database based on the user preference and the infrastructure keyword.

2. A method of rendering a lighting scene in an environment comprising causing the method steps of claim 1 to be performed to return the at least one image and further comprising a step of:

controlling the at least one luminaire to render the lighting scene based on the returned at least one image.

3. The method according to claim 1 , wherein the image database stores a plurality of images each stored in association with at least one respective tag.

4. The method according to claim 1 , further comprising identifying an additional property of the at least one luminaire within the environment; and wherein said searching the image database is performed additionally based on the identified additional property.

5. The method according to claim 4 , wherein the additional property is an orientation of the at least one luminaire within the environment.

6. The method according to claim 5 , wherein the additional property is a shape of the at least one luminaire within the environment.

7. The method according to claim 1 , wherein said user preference comprises one or more of: a keyword; a mood icon; a colour; and a colour palette.

8. The method according to claim 1 , wherein said searching the image databased is performed using an Internet-based image search service.

9. The method according to claim 1 , wherein said at least one luminaire is a plurality of luminaires.

10. The method according to claim 1 , further comprising steps of:

if more than one image is returned from said search, presenting the more than one image to the user via a user interface; and

receiving user input identifying one of the more than one image for use in said rendering.

11. A computer program product comprising computer-executable code embodied on a non-transitory computer-readable storage medium, the computer program product being configured to when executed by one or more processing units, perform the method according to claim 1 .

12. A controller of for controlling at least one luminaire to render a lighting scene in an environment based on an image; the controller comprising:

an input for receiving a search trigger comprising at least one indication of a user preference;

an interface for sending control commands to the at least one luminaire; and

a processor arranged to:

receive the search trigger;

identifying at least a position of the at least one luminaire relative to each other;

retrieve at least one image by causing, responsive to receiving said search trigger, a search of an image database, at least one image as having at least one image feature which corresponds to the relative position of the two or more of the luminaires relative to each other; and

control, via the interface, the two or more luminaires to render the lighting scene based on the retrieved at least one image,

wherein said searching comprises determining an infrastructure keyword from the identified position, and searching the image database based on the user preference and the infrastructure keyword.

13. A system comprising the controller according to claim 12 and the at least one luminaire.