Image processing apparatus, image processing method, and operation microscope system

An image processing method comprising:

• causing an image processing apparatus to:
• receive an operative field image for an eye of a patient;
• track an eyeball in the operative field image;
• set a plurality of regions of the operative field image, the plurality of regions having different display modes;
• generate a display image including the plurality of regions of the operative field image in which an annular or radial boundary formed by the difference in the display modes between the plurality of regions of the operative field image indicates a specific position or a specific size with respect to the eye;
• and
• change a position or a size of the boundary on the basis of a tracking result of the eyeball,
• wherein the display image is generated based upon the changed position or the changed size of the boundary.

An operation microscope system comprising:

• an operation microscope that obtains an operative field image for an eye of a patient;
• an image processing apparatus that generates a display image;
• and
• a display device that displays the display image, wherein
• the image processing apparatus includes processing circuitry configured to:
• receive the operative field image;
• track an eyeball in the operative field image;
• set a plurality of regions of the operative field image, the plurality of regions having different display modes;
• generate the display image including the plurality of regions of the operative field image in which an annular or radial boundary formed by the difference in the display modes between the plurality of regions of the operative field image indicates a specific position or a specific size with respect to the eye;
• and
• change a position or a size of the boundary on the basis of a tracking result of the eyeball, and
• the processing circuitry is configured to generate the display image based upon the changed position or the changed size of the boundary.