Image-based control of lighting systems

• US 9,501,718 B1
• Filed: 01/13/2014
• Issued: 11/22/2016
• Est. Priority Date: 01/15/2013
• Status: Active Grant

• Current Assignee: Marvell Asia Pte Limited (Marvell Technology Group Limited)
• Original Assignee: Marvell International Limited (Marvell Technology Group Limited)
• Inventors: Sarnaik, Prabhanjan Vijaykumar
• Primary Examiner(s): Bailey, Frederick
• Assistant Examiner(s): Nawaz, Talha M
• Application Number:
  US14/153,244
• Time in Patent Office: 1,044 Days
• Field of Search: None
• US Class Current: 1/1
• CPC Class Codes: G06V 20/52 Surveillance or monitoring of activities, e.g. for recognising suspicious objects recognising microscopic objects G06V20/69
• CPC Class Codes: H05B 47/125 by using cameras
• CPC Class Codes: H05B 47/19 via wireless transmission
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

Systems, methods, and other embodiments associated with image based control of lighting systems are described. According to one embodiment, an apparatus includes an imaging device configured to capture an image of a space. The apparatus also includes a matching logic configured to compare the image to templates in a set of templates to determine a current activity occurring in the space. In response to determining that the image matches a template, the matching logic is configured to generate a match signal that identifies the template. A control logic is configured to access one or more stored scenes. Each scene specifies a lighting setting for a controllable characteristic of at least one light fixture. The control logic selects a scene mapped to the identified template. The control logic further causes the controllable characteristic of the at least one light fixture to be adjusted to the lighting setting defined by the scene.

Claims

1. An apparatus, comprising:

an imaging device positioned in a first room and configured to capture an image of a space in the first room, wherein the image captures an arrangement of contents and occupants in the first room;

a matching logic configured to;

compare the image of the first room and the arrangement of contents in the image to template images of the first room from a set of templates, wherein each template image of the first room is an image representing a different arrangement of contents, occupants, and an activity in the first room; and

in response to determining that the arrangement of contents, occupants, and activity in the image matches the arrangement of contents, occupants, and activity in one of the template images of the first room, generate a match signal that identifies the template image that matched; and

a control logic configured to;

access one or more stored scenes, wherein each scene specifies a lighting setting for a controllable characteristic of at least one light fixture, and wherein each of the template images is mapped with one of the stored scenes;

select a scene that is mapped to the identified template image that matched the image; and

cause the controllable characteristic of the at least one light fixture in the first room to be adjusted to the lighting setting defined by the scene.

2. The apparatus of claim 1, wherein at least one template image from the set of templates depicts a location of an occupant of the space.

3. The apparatus of claim 1, wherein at least one template image from the set of templates depicts an occupant engaged in an activity in the space.

4. The apparatus of claim 1, wherein at least one template image from the set of templates depicts an operating condition of at least one electronic device in the space.

5. The apparatus of claim 1, wherein each scene defines lighting settings for a plurality of lights.

6. The apparatus of claim 1, wherein the controllable characteristic comprises brightness of a specified light fixture.

7. The apparatus of claim 1, wherein the imaging device is configured to capture video having frames, and wherein the matching logic is configured to determine if at least one frame matches a template image from the set of templates.

8. A method, comprising:

capturing, by an imaging device, an image of a space, wherein the image captures an arrangement of contents and occupants in an activity in the space, wherein the imaging device communicates the image to a computing device;

comparing, by the computing device, the image to template images of the space from a set of templates, wherein each template image of the space is an image representing a different arrangement of contents, occupants, and an activity in the space;

in response to determining that the arrangement of contents, occupants, and activity in the image matches the arrangement of contents, occupants, and activity in one of the template images of the space, generating a match signal that identifies the template image selected as matching the image;

selecting a scene based, at least in part on the identified template image, wherein a scene specifies lighting settings for at least one light fixture in the space; and

changing a lighting setting of the at least one light fixture based, at least in part, on the scene.

9. The method of claim 8, further comprising:

identifying an occupant in the image; and

selecting a template subset from the set of templates, wherein the template subset is a subset of templates that are mapped to the occupant; and

wherein the comparing comprises comparing the image to template images in the subset of templates.

10. The method of claim 9, further comprising:

when the occupant is not identified, comparing the image to template images in the whole set of templates.

11. The method of claim 8, wherein at least one template image depicts an activity being performed by an occupant of the space.

12. The method of claim 8, wherein each scene defines lighting settings for a plurality of light fixtures.

13. A system comprising:

an imaging device that captures an image of a space, wherein the image captures an arrangement of contents and occupants in the space;

a lighting apparatus comprising a matching logic stored in a non-transitory computer storage medium including instructions that when executed by a processor cause the processor to;

compare the image of the space and the arrangement of contents in the image to template images of the space from a set of templates, wherein each template image of the space is an image representing a different arrangement of contents, occupants, and an activity in the space; and

in response to determining that the arrangement of contents, occupants, and activity in the image matches the arrangement of contents, occupants, and the activity in one of the template images of the space, generate a match signal that identifies the template image that matched; and

a group of lighting fixtures, each light fixture having a control logic configured to;

access one or more stored presets, each preset identifying at least one lighting setting;

select a preset mapped to the template image identified by the match signal; and

cause the corresponding light fixture to be adjusted to the lighting setting defined by the selected preset.

14. The system of claim 13, wherein at least one template image from the set of templates depicts a location of an occupant of the space.

15. The system of claim 13, wherein at least one template image from the set of templates depicts an occupant engaged in an activity in the space.

16. The system of claim 13, wherein at least one template image from the set of templates depicts an operating condition of at least one electronic device in the space.

17. The system of claim 13, wherein the matching logic is further configured with instructions that when executed by the processor cause the processor to:

identify a time of day that the image was captured; and

select a template subset from the set of templates by removing template images that do not correspond to the identified time of day; and

compare the image to template images in the subset of templates.

18. The system of claim 13, wherein the imaging device is configured to capture an image in response to sensing motion in the space.

19. The system of claim 13, wherein imaging device is configured to capture a subsequent image at a predetermined time interval.

20. The system of claim 13, wherein the imaging device is configured to capture video having frames, and wherein the matching logic is configured to determine if at least one frame in the video matches a template.