Systems and methods for image processing

A system for image processing, comprising:

• at least one computer-readable storage medium including a set of instructions for processing an image;
• and
• at least one processor in communication with the computer-readable storage medium, wherein when executing the set of instructions, the at least one processor is directed to:
• identify a target region in the image, the target region having a plurality of gray levels;
• determine a plurality of statistical probabilities relating to the plurality of gray levels, a statistical probability relating to a gray level of the plurality of gray levels;
• determine a mapping curve of the target region based on the plurality of statistical probabilities and a plurality of predetermined curves associated with the plurality of gray levels;
• identify at least one pixel that needs to be processed in the target region;
• for a pixel of the at least one pixel that needs to be processed, determine the value of the pixel based on the mapping curve of the target region;
• and
• generate a processed image based on the determined at least one value of the at least one pixel.

A method for processing an original image, comprising:

• obtaining a first luminance image of the original image;
• decomposing the first luminance image of the original image to provide a plurality of first decomposed images;
• adjusting pixel frequencies in at least some of the plurality of first decomposed images to generate a plurality of second decomposed images;
• generating a second luminance image of the original image based on the plurality of second decomposed images;
• and
• determining a final image of the original image based on the first luminance image, the second luminance image, and the original image.