Dynamic light effect based on an image
A method is provided for controlling one or more lighting devices to generate a dynamic light effect based on an image. A first area in the image is selected based on first selection criteria (e.g. object recognition). Within this first area, a sequence of sub-areas ( 260, 262, 264 ) are selected based on second selection criteria (e.g. zooming in to a recognized object). Color values are extracted from each sub-area and the one or more lighting devices are controlled based on the extracted color values.
1. A method of controlling a lighting device to generate a dynamic light effect, the method comprising:
receiving an image,
selecting a first area in the received image based on first selection criteria,
selecting a sequence of sub-areas in the first area based on second selection criteria,
extracting a set of color values, each color value of the set extracted from a different sub-area in the sequence of sub-areas; and
controlling the lighting device based on the extracted set of color values to render a dynamic light effect,
wherein the selecting the first area in the received image based on the first selection criteria comprises:
detecting, using image processing, a plurality of objects in the received image;
selecting as the first area an area, comprising the detected objects;
determining a non-linear path so that the path passes through object borders of said plurality of objects in the first area based on object-recognition of the plurality of objects; and
selecting the sequence of sub-areas in the first area such that each sub-area of said sequence is disposed along the path.
2. The method according to claim 1 , wherein the plurality of objects comprises at least one of a fire, a cloud, a body of water, a waterfall, and a heavenly body.
3. The method according to claim 1 , wherein receiving the image comprises a user selecting the image from a set of images.
4. The method according to claim 1 , wherein the determined path runs parallel to an axis of the received image.
5. The method according to claim 1 , wherein the path in the first area of the received image is selected by a user.
6. The method according to claim 1 , wherein the sub-areas in the sequence of sub-areas in the first area are of different sizes.
7. The method according to claim 6 , wherein the sub-areas in the sequence of sub-areas are of an increasingly smaller size.
8. The method according to claim 1 , wherein extracting a color value from a sub-area in the sequence of sub-areas comprises: extracting a dominant color value of the sub-area.
9. The method according to claim 1 , the method further comprising:
determining a particular order of the extracted color values based on at least one of: hue, saturation and brightness of the extracted color values, such that the one or more lighting devices are controlled based on the determined order of extracted color values.
10. A computer program product comprising a non-transitory storage medium including instructions configured to perform the method according to claim 1 when run on a computer device.
11. The method according to claim 1 , wherein said plurality of objects is a majority of objects in said image.
12. The method according to claim 11 , wherein said controlling the lighting device based on the extracted set of color values comprises controlling the lighting device to render color values in the extracted set in a same order in which the different sub-areas, from which said rendered color values were extracted, are disposed along said path.
13. The method according to claim 1 , wherein said controlling the lighting device based on the extracted set of color values comprises controlling the lighting device to render color values in the extracted set in a same order in which the different sub-areas, from which said rendered color values were extracted, are disposed along said path.