Method and apparatus for controlling white balance
A method comprising: capturing, by an electronic device, a first incident light sample and generating an image based on the first incident light sample; capturing, by the electronic device, a second incident light sample and identifying a light source type associated with the second incident light sample; and adjusting a white balance of the image according to the light source type.
1. A portable communication device comprising:
a light sensor to detect visible light and infrared light from incident light;
an image sensor to capture an image; and
a processor configured to:
identify a first amount of the visible light and a second amount of the infrared light using the light sensor;
identify a color temperature corresponding to the incident light based at least in part on the first amount and the second amount; and
generate the image using the image sensor, the generating including performing a white balance function based at least in part on the identified color temperature.
2. The portable communication device of claim 1 , wherein the light sensor is configured to identify a first portion of the incident light as the visible light based at least in part on a determination that a wavelength of the first portion corresponds to a first range and a second portion of the incident light as the infrared light based at least in part on a determination that a wavelength of the second portion corresponds to a second range.
3. The portable communication device of claim 1 , wherein the light sensor includes a first sensor corresponding to the visible light and a second sensor corresponding to the infrared light.
4. The portable communication device of claim 1 , wherein the light sensor includes at least one of an RGB sensor, a TOF (time of flight) sensor, an ultraviolet sensor, an infrared sensor, an iris sensor, an illumination sensor and a proximity sensor, another image sensor, or any combination thereof.
5. The portable communication device of claim 1 , wherein the light sensor and the image sensor are disposed on a same side of the portable communication device.
6. The portable communication device of claim 1 , wherein the processor is further configured to:
identify an auto white balance (AWB) gain control value corresponding to the identified color temperature, and
perform the white balance function based at least in part on the identified AWB gain control value.
7. The portable communication device of claim 1 , wherein the processor is adapted to:
determine a ratio between the visible light and the infrared light based at least in part on the first amount and the second amount; and
perform the identifying of the color temperature based at least in part on the ratio.
8. The portable communication device of claim 7 , wherein the ratio includes: a ratio of a first amount of the visible light to a second amount of the infrared light, a ratio of the second amount to the first amount, a ratio of the first amount to a sum of the first amount and the second amount, a ratio of the second amount to the sum, a ratio of the sum to the first amount, a ratio of the sum to the second amount, a ratio of the first amount to a third amount of the incident light, a ratio of the second amount to the third amount, a ratio of the third amount to the first amount, a ratio of the third amount to the second amount, or any combination thereof.
9. A portable communication device comprising:
a light sensor to detect visible light and infrared light from incident light;
an image sensor to capture one or more images;
a processor configured to:
generate a first image using the image sensor, the generating of the first image including performing a white balance function;
identify a first amount of the visible light and a second amount of the infrared light using the light sensor;
identify a color temperature corresponding to the incident light based at least in part on the first amount and the second amount; and
generate a second image using the image sensor, the generating of the second image including adjusting the white balance function based at least in part on the identified color temperature.
10. The portable communication device of claim 9 , wherein the first amount and the second amount is identified while the one or more images are generated using the image sensor.
11. The portable communication device of claim 9 , wherein the processor is further configured to:
prior to generating of the first image, identify other amounts of another visible light and another infrared light using the image sensor or light sensor;
identify another color temperature corresponding to another incident light based on the other amounts of the other visible light and the other infrared light; and
perform the generating the first image based at least in part on the other color temperature.
12. The portable communication device of claim 11 , wherein the processor is further configured to:
set the white balance function based at least in part on the other color temperature.
13. The portable communication device of claim 9 , wherein the processor is further configured to:
determine a ratio between the visible light and the infrared light based at least in part on the first amount and the second amount; and
perform the identifying of the color temperature based at least in part on the ratio.
14. The portable communication device of claim 9 , wherein the processor is further configured to:
perform a first white balancing operation with respect to the image, as at least part of the performing of the white balance function; and
perform of a second white balancing operation with respect to the second image based at least in part on the color temperature, as at least part of the adjusting of the white balance function.
15. A portable communication device comprising:
a plurality of sensors to receive incident light, the plurality of sensors including a light sensor to detect infrared light from the incident light and an image sensor;
a processor configured to:
identify a first amount of visible light of the incident light using the image sensor;
identify a second amount of the infrared light using the light sensor;
identify a color temperature corresponding to the incident light based at least in part on the first amount and the second amount; and
generate an image using the image sensor, the generating including performing a white balance function based at least in part on the identified color temperature.
16. The portable communication device of claim 15 , wherein the processor is further configured to:
determine a ratio between the visible light and the infrared light based at least in part on the first amount and the second amount; and
perform the identifying of the color temperature based at least in part on the ratio.
17. The portable communication device of claim 16 , wherein the ratio includes: a ratio of a first amount of the visible light to a second amount of the infrared light, a ratio of the second amount to the first amount, a ratio of the first amount to a sum of the first amount and the second amount, a ratio of the second amount to the sum, a ratio of the sum to the first amount, a ratio of the sum to the second amount, a ratio of the first amount to a third amount of the incident light, a ratio of the second amount to the third amount, a ratio of the third amount to the first amount, a ratio of the third amount to the second amount, or any combination thereof.
18. The portable communication device of claim 15 , wherein the processor is further configured to:
identify an auto white balance (AWB) gain control value corresponding to the identified color temperature, and
perform the white balance function based at least in part on the identified AWB gain control value.