Image processing method, image processing device, and program

An apparatus for observing an object, comprising:

• a light source;
• a detection unit configured to detect interference light between signal light and reference light, the signal light being obtained by illuminating one of the lights split from light emitted by the light source onto the object, and the reference light being another of the lights split from light emitted by the light source;
• an illumination optical system configured to illuminate the one light onto the object;
• a detection optical system configured to transmit, to the detection unit as the signal light, returning light from the object in response to light illuminated by the illumination optical system;
• and
• a processing section configured to perform processing based on information representing the interference light detected by the detection unit, the processing including:
• a first process of projecting the information representing the interference light onto a four-dimensional frequency aperture in a four-dimensional space of frequencies of the light emitted from the light source and frequencies of light in three dimensions representing the object, and
• a second process of projecting information projected onto the four-dimensional frequency aperture into three-dimensional space.

An object observation method performed by a processor in an apparatus for observing an object,

• the apparatus comprising:
• a light source;
• a detection unit configured to detect interference light between signal light and reference light, the signal light being obtained by illuminating one of the lights split from light emitted by the light source onto the object, and the reference light being another of the lights split from light emitted by the light source;
• an illumination optical system configured to illuminate the one light onto the object;
• and
• a detection optical system configured to transmit, to the detection unit as the signal light, returning light from the object in response to light illuminated by the illumination optical system, the object observation method comprising:
• performing, by the processor, processing based on information representing the interference light detected by the detection unit, the processing including:
• a first process of projecting the information representing the interference light onto a four-dimensional frequency aperture in a four-dimensional space of frequencies of the light emitted from the light source and frequencies of light in three dimensions representing the object, and
• a second process of projecting information projected onto the four-dimensional frequency aperture into three-dimensional space.

A non-transitory computer-readable storage medium storing a program for causing a processor to execute processing in an apparatus for observing an object,

• the apparatus comprising:
• a light source;
• a detection unit configured to detect interference light between signal light and reference light, the signal light being obtained by illuminating one of the lights split from light emitted by the light source onto the object, and the reference light being another of the lights split from light emitted by the light source;
• an illumination optical system configured to illuminate the one light onto the object;
• and
• a detection optical system configured to transmit, to the detection unit as the signal light, returning light from the object in response to light illuminated by the illumination optical system, the processing comprising:
• performing processing based on information representing the interference light detected by the detection unit, the processing including:
• a first process of projecting the information representing the interference light onto a four-dimensional frequency aperture in a four-dimensional space of frequencies of the light emitted from the light source and frequencies of light in three dimensions representing the object, and
• a second process of projecting information projected onto the four-dimensional frequency aperture into three-dimensional space.