Electronic device and method for controlling flash

A computer-implemented method for controlling flash using an electronic device, the method comprising:

• obtaining an illumination intensity and a color temperature of a current environment from the RGB sensor;
• turning on a pre-flash of the flash when the illumination intensity is lower than a first predetermined value;
• controlling a color temperature of the pre-flash to be equal to the color temperature by adjusting a ratio between current of the high color temperature LED and current of the low color temperature LED when the color temperature is lower than a second predetermined value;
• obtaining a distance between a target object and the camera;
• adjusting the current of the high color temperature LED and the current of the low color temperature LED simultaneously according to the obtained distance after turning on a main-flash of the flash;
• and
• capturing an image of the target object while keeping the ratio between the current of the high color temperature LED and the current of the low color temperature LED unchanged.

A non-transitory storage medium having stored thereon instructions that, when executed by a processor of an electronic device, causes the processor to perform a method for controlling flash to take picture, the electronic device further comprising a camera, a red green blue (RGB) sensor, a flash comprising a high color temperature light-emitting diode (LED) and a low color temperature LED, and a storage device, wherein the method comprising:

• obtaining an illumination intensity and a color temperature of a current environment from the RGB sensor;
• turning on a pre-flash of the flash when the illumination intensity is lower than a first predetermined value;
• controlling a color temperature of the pre-flash to be equal to the color temperature by adjusting a ratio between current of the high color temperature LED and current of the low color temperature LED when the color temperature is lower than a second predetermined value;
• obtaining a distance between a target object and the camera;
• adjusting the current of the high color temperature LED and the current of the low color temperature LED simultaneously according to the obtained distance after turning on a main-flash of the flash;
• and
• capturing an image of the target object while keeping the ratio between the current of the high color temperature LED and the current of the low color temperature LED unchanged.