Color temperature adjustment method and apparatus, and graphical user interface

A color temperature adjustment method implemented by a terminal, wherein the terminal comprises a display screen, wherein the display screen comprises a color temperature adjustment region, and wherein the color temperature adjustment method comprises:

• displaying the color temperature adjustment region on the display screen, wherein each operation point in the color temperature adjustment region displays one color, wherein different operation points display different colors, and wherein one color corresponds to one color temperature;
• detecting an input operation performed on the display screen when the display screen is touched, wherein a touch point generated during the input operation corresponds to an operation point in the color temperature adjustment region;
• converting coordinates of the operation point corresponding to the input operation into a first color parameter, wherein at least one control point is provided in the color temperature adjustment region, wherein one control point corresponds to one RGB parameter, and wherein converting the coordinates of the operation point into the first color parameter comprises:
• determining, based on a relationship between coordinates of the touch point generated during the input operation and the color temperature adjustment region, polar coordinates of the operation point in the color temperature adjustment region;
• determining, based on a location of the polar coordinates of the operation point in the color temperature adjustment region, N control points corresponding to the input operation;
• and
• converting the polar coordinates of the operation point into the first color parameter based on RGB parameters of the N control points corresponding to the input operation using a gain interpolation algorithm;
• obtaining ambient light using an ambient light sensor;
• converting a color parameter of the ambient light into a second color parameter;
• integrating the first color parameter and the second color parameter to obtain a third color parameter;
• converting the third color parameter into a target color parameter, wherein each component value in the target color parameter matches red green blue (RGB) channels of the terminal corresponding to each component value;
• and
• displaying the target color parameter on the display screen of the terminal.

A terminal comprising:

• a memory comprising instructions;
• and
• a computer processor coupled to the memory and configured to execute the instructions to:
• display a color temperature adjustment region on a display screen, wherein each operation point in the color temperature adjustment region displays one color, wherein different operation points display different colors, and wherein one color corresponds to one color temperature;
• detect an input operation performed on the display screen when the display screen is touched, wherein a touch point generated during the input operation corresponds to an operation point in the color temperature adjustment region;
• convert coordinates of the operation point corresponding to the input operation into a first color parameter;
• obtain ambient light using an ambient light sensor;
• convert a color parameter of the ambient light into a second color parameter by:
• obtaining component values corresponding to the color parameter of the ambient light in XYZ color space;
• determining a first component value and a second component value of the display screen in the XYZ color space based on a current luminance of the display screen and the component values corresponding to the color parameter of the ambient light in the XYZ color space;
• determining, based on the first component value, the current luminance of the display screen, and the second component value, each component value corresponding to the display screen in RGB color space;
• and
• performing color temperature adjustment normalization processing on each component value corresponding to the display screen in the RGB color space to obtain the second color parameter;
• integrate the first color parameter and the second color parameter to obtain a third color parameter;
• convert the third color parameter into a target color parameter, wherein each component value in the target color parameter matches red green blue (RGB) channels of the terminal corresponding to each component value;
• and
• display the target color parameter on the display screen of the terminal.