Image processing method, image processing device, and program

An image processing method, comprising:

• by a processor:
• acquiring a fundus image;
• generating a first sharpened image by performing a first sharpening processing using a first parameter on an entire region of the fundus image, and generating a second sharpened image by performing a second sharpening processing using a second parameter, which is different from the first parameter, on the entire region of the fundus image;
• and
• generating a sharpened fundus image by generating a sharpened central image by combining the first sharpened image and the second sharpened image at a first combination ratio, and by generating a sharpened peripheral image of a peripheral region of the sharpened central image by combining the first sharpened image and the second sharpened image at a second combination ratio that is different from the first combination ratio.

An image processing device, comprising a processor, and a memory coupled to the processor, the processor being configured to:

• acquire a fundus image;
• perform a first enhancement processing on an image of at least a central region of the fundus image, and perform a second enhancement processing, which is different from the first enhancement processing, on an image of at least a peripheral region of the fundus image that is at a periphery of the central region;
• and
• generate an enhanced image of the fundus image by combining, at a predetermined combination ratio, of a first image obtained as a result of the first enhancement processing having been executed and a second image obtained as a result of the second enhancement processing having been performed, the predetermined combination ratio being a combination ratio such that, the further a pixel is positioned from a center toward the periphery, the greater a proportion of the second image relative to a proportion of the first image.

An image processing device, comprising a processor, and a memory coupled to the processor, wherein the processor:

• acquires a fundus image;
• generates a first sharpened image by performing a first sharpening processing using a first parameter on an entire region of the fundus image, and generating a second sharpened image by performing a second sharpening processing using a second parameter, which is different from the first parameter, on the entire region of the fundus image;
• and
• generates a sharpened fundus image by generating a sharpened central image by combining the first sharpened image and the second sharpened image at a first combination ratio, and by generating a sharpened peripheral image of a peripheral region of the sharpened central image by combining the first sharpened image and the second sharpened image at a second combination ratio that is different from the first combination ratio.