Image anti-aliasing method and apparatus, device, medium, and program product

An apparatus for image anti-aliasing, the apparatus comprising:

• at least one memory configured to store program code;
• and
• at least one processor configured to read the program code and operate as instructed by the program code, the program code comprising:
• first obtaining code configured to cause the at least one first processor to obtain a first edge pixel of an image in a high-dynamic range (HDR) space;
• first determining code configured to cause the at least one first processor to determine a first scaling factor based on a local brightness environment of the first edge pixel;
• second determining code configured to cause the at least one first processor to determine a color ratio corresponding with the first edge pixel based on brightness values of a plurality of pixels in an image block where the first edge pixel is located;
• first scaling code configured to cause the at least one first processor to scale the color ratio based on the first scaling factor to obtain a first color ratio;
• second obtaining code configured to cause the at least one first processor to obtain a first color value based on a color value of the first edge pixel, a color value of a target pixel, and the first color ratio, wherein the target pixel has a large color value difference from the first edge pixel among a plurality of surrounding pixels of the first edge pixel;
• and
• first updating code configured to cause the at least one first processor to update the first color value to the color value of the first edge pixel.

A non-transitory computer-readable medium storing program code which, when executed by one or more processors of a device for image anti-aliasing, cause the one or more processors to at least:

• obtain a first edge pixel of an image in a high-dynamic range (HDR) space;
• determine a first scaling factor based on a local brightness environment of the first edge pixel;
• determine a color ratio corresponding with the first edge pixel based on brightness values of a plurality of pixels in an image block where the first edge pixel is located;
• scale the color ratio based on the first scaling factor to obtain a first color ratio;
• obtain a first color value based on a color value of the first edge pixel, a color value of a target pixel, and the first color ratio, wherein the target pixel has a large color value difference from the first edge pixel among a plurality of surrounding pixels of the first edge pixel;
• and
• update the first color value to the color value of the first edge pixel.