Method and device for processing a page

1. A method for processing a page, comprising:

calculating an average brightness value of pixels in the page on a display;

determining whether the average brightness value exceeds a preset brightness threshold;

selecting target pixels from the page when the average brightness value exceeds the preset brightness threshold, wherein the target pixels include first target pixels, the first target pixels including sub-pixels, any two of sub-pixels in a pixel of the first target pixels have a brightness difference that is less than a preset difference value; and

performing a color reversion operation on the target pixels by:

determining a brightness value of each one of a plurality of sub-pixels in the target pixels;

calculating, for each one of the plurality of sub-pixels in the target pixels, a difference between a preset maximum brightness and the brightness value of the sub-pixel; and

performing a color reversion on the target pixels by using the difference as a reversed color of the sub-pixel.

2. The method of claim 1 , wherein the target pixels comprise the first target pixels, wherein each pixel in the page includes a plurality of sub-pixels, and wherein selecting the target pixels from the page comprises:

determining, for each pixel in the page, a brightness value of each of the plurality of sub-pixels of the pixel;

calculating a brightness difference between each of the plurality of sub-pixels of the pixel; and

selecting the pixel from the page when the brightness difference between each of the plurality of sub-pixels of the pixel is less than the preset difference value.

3. The method according to claim 1 , wherein calculating the average brightness value of the pixels in the page comprises:

calculating a sum of brightness values of all sub-pixels in the page;

calculating a total number of the sub-pixels in the page; and

calculating a ratio of the sum of brightness values of the sub-pixels with respect to the total number of the sub-pixels.

4. A device for processing a page, comprising:

a display;

a processor; and

a memory for storing instructions executable by the processor, wherein the processor is configured to:

calculate an average brightness value of pixels in the page on the display;

determine whether the average brightness value exceeds a preset brightness threshold;

select target pixels from the page when the average brightness value exceeds the preset brightness threshold, wherein the target pixels include first target pixels, the first target pixels-including sub-pixels, any two of sub-pixels in a pixel of the first target pixels have a brightness difference that is less than a preset difference value; and

perform a color reversion operation on the target pixels by:

determining a brightness value of each one of a plurality of sub-pixels in the target pixels;

calculating, for each one of the plurality of sub-pixels in the target pixels, a difference between a preset maximum brightness and the brightness value of the sub-pixel; and

performing a color reversion on the target pixels by using the difference as a reversed color of the sub-pixel.

5. The device of claim 4 , wherein the target pixels comprise the first target pixels, wherein each pixel in the page includes a plurality of sub-pixels, and wherein the processor is further configured to:

determine, for each pixel in the page, a brightness value of each of the plurality of sub-pixels of the pixel;

calculate brightness difference between each of the plurality of sub-pixels of the pixel; and

select the pixel from the page when the brightness difference between each of the plurality of sub-pixels of the pixel is less than the preset difference value.

6. The device according to claim 4 , wherein the processor is further configured to:

calculate a sum of brightness values of all sub-pixels in the page;

calculate a total number of the sub-pixels in the page; and

calculate a ratio of the sum of brightness values of the sub-pixels with respect to the total number of the sub-pixels.

7. A non-transitory computer-readable storage medium having instructions that, when executed by one or more processors of a terminal device, cause the terminal device to:

calculate an average brightness value of pixels in a page on a display;

determine whether the average brightness value exceeds a preset brightness threshold;

select target pixels from the page when the average brightness value exceeds the preset brightness threshold, wherein the target pixels include first target pixels, the first target pixels including sub-pixels, any two of sub-pixels in a pixel of the first target pixels have a brightness difference that is less than a preset difference value; and

perform a color reversion operation on the target pixels by:

determining a brightness value of each one of a plurality of sub-pixels in the target pixels;

calculating, for each one of the plurality of sub-pixels in the target pixels, a difference between a preset maximum brightness and the brightness value of the sub-pixel; and

performing a color reversion on the target pixels by using the difference as a reversed color of the sub-pixel.