Optical measurement method, optical measurement apparatus, and non-transitory storage medium storing optical measurement program

An optical measurement apparatus comprising a processor configured to:

• illuminate an object with illuminating light having a first wavelength and a second wavelength different from the first wavelength, form an object image including at least a part of the object by a bright-field optical system, and capture and acquire object image data by an imaging element configured to distinguish a spectrum including the first wavelength and a spectrum including the second wavelength by each pixel;
• perform dark-field conversion for the first wavelength based on the object image data to obtain first converted image data;
• perform dark-field conversion for the second wavelength based on the object image data to obtain second converted image data;
• perform hue generation processing of generating hue image data based on the first converted image data and the second converted image data;
• and
• estimate information regarding a physical property of the object based on the hue image data.

A non-transitory storage medium storing an optical measurement program, the optical measurement program causing a computer to execute:

• illuminating an object with illuminating light having a first wavelength and a second wavelength different from the first wavelength, forming an object image including at least a part of the object by the bright-field optical system, and capturing and acquiring object image data by an imaging element configured to distinguish a spectrum including the first wavelength and a spectrum including the second wavelength by each pixel;
• performing dark-field conversion for the first wavelength based on the object image data to obtain first converted image data;
• performing dark-field conversion for the second wavelength based on the object image data to obtain second converted image data;
• performing hue generation processing of generating hue image data based on the first converted image data and the second converted image data;
• and
• estimating information regarding a physical property of the object based on the hue image data.