Image processing system, computer readable recording medium, and image processing method

A non-transitory computer readable recording medium comprising an image processing program for performing image measurement that is executed by a computer that controls an imaging device that images a target and outputs image data, and an illumination device in which a plurality of light emitting units for irradiating the target with illumination light are disposed, the image processing program enabling the computer to execute:

• a function of controlling the illumination device so that a plurality of light emission states of the light emitting units are made different according to an illumination condition;
• a function of controlling the imaging device so that the target is imaged in the plurality of different light emission states;
• a function of generating image data to be used for the image measurement from a plurality of pieces of image data captured in the plurality of different light emission states on the basis of a generation condition defined in association with a position in the image data;
• and
• a function of determining at least one of the illumination condition and the generation condition so that image data suitable for a purpose of the image measurement is generated,
• wherein the at least one of the illumination condition and the generation condition is determined so that a state of an appearance of a reference target, of which a state of an appearance is known, indicated by image data generated from a plurality of pieces of reference image data obtained by the reference target being imaged in the plurality of different light emission states is matched with the known state of the appearance.

An image processing method for performing image measurement, the image processing method comprising:

• making a plurality of light emission states of a plurality of light emitting units different according to an illumination condition;
• acquiring a plurality of pieces of image data by imaging a target in the plurality of different light emission states;
• generating image data to be used for the image measurement from a plurality of pieces of image data captured in the plurality of different light emission states on the basis of a generation condition defined in association with a position in the image data;
• and
• determining at least one of the illumination condition and the generation condition so that image data suitable for a purpose of the image measurement is generated,
• wherein the at least one of the illumination condition and the generation condition is determined so that a state of an appearance of a reference target, of which a state of an appearance is known, indicated by image data generated from a plurality of pieces of reference image data obtained by the reference target being imaged in the plurality of different light emission states is matched with the known state of the appearance.