Digital microscope apparatus, method of searching for in-focus position thereof, and program

A system, comprising:

• a microprocessor coupled to an imaging control apparatus, the microprocessor programmed to:
• calculate a first in-focus position based on a phase difference image of a first area of an object captured by an imaging device,
• search for a second in-focus position based on the first in-focus position and a predetermined area in the first area, and
• cause the imaging device to capture an output image of the object at the second in-focus position.

An imaging control apparatus, comprising:

• a circuitry configured to:
• calculate a first in-focus position based on a first image of a first area of an object captured by an imaging device,
• search for a second in-focus position based on the first in-focus position and a predetermined area in the first area, and
• cause the imaging device to capture an output image of the object at the second in-focus position.

An image processing system, comprising:

• an imaging device configured to capture an output image and generate image data representing the output image;
• and
• a memory storing executable user code which, when read, causes processing circuitry to:
• calculate a first in-focus position based on a first image of a first area of an object captured by the imaging device,
• search for a second in-focus position based on the first in-focus position and a predetermined area in the first area, and
• cause the imaging device to capture the output image of the object at the second in-focus position.