Image processing method, image processing device, and recording medium storing program

An image processing device, comprising a processor, the processor being configured to execute:

• a step of acquiring OCT volume data including a choroid;
• a step of generating a plurality of en-face images corresponding to a plurality of planes having different depths, based on the OCT volume data;
• a step of deriving an image feature amount in each of the plurality of en-face images;
• and
• a step of identifying, as a boundary, an interval between en-face images in which the image feature amounts indicate a switch between presence and absence of choroidal blood vessels, based on the respective image feature amounts.

A non-transitory recording medium storing a program for performing image processing, the program causing a processor to execute:

• a step of acquiring OCT volume data including a choroid;
• a step of generating a plurality of en-face images corresponding to a plurality of planes having different depths, based on the OCT volume data;
• a step of deriving an image feature amount in each of the plurality of en-face images;
• and
• a step of identifying, as a boundary, an interval between en-face images in which the image feature amounts indicate a switch between presence and absence of choroidal blood vessels, based on the respective image feature amounts.