Edible oil deterioration degree determination device, edible oil deterioration degree determination system, edible oil deterioration degree determination method, edible oil deterioration degree learning device, and learned model for use in edible oil deterioration degree determination

An edible oil deterioration level determination system for determining a deterioration level of an edible oil, comprising:

• an image capturing device that is installed above an oil vat in which the edible oil is stored to capture an oil image that is an image of the edible oil;
• and
• a deterioration level determination device for determining the deterioration level of the edible oil based on the oil image,
• the deterioration level determination device being configured to:
• acquire the oil image output from the image capturing device;
• apply filter processing to the oil image, the filter processing being carried out for identifying a feature area that is an area of predetermined air bubbles characterizing deterioration of the edible oil based on a range of a color of air bubbles included in the oil image;
• calculate a feature parameter that is a parameter characterizing the deterioration of the edible oil in the feature area;
• estimate a deterioration indicator of the edible oil based on the feature parameter as calculated;
• and
• determine the deterioration level of the edible oil based on the deterioration indicator as estimated.

An edible oil deterioration level determination method of determining a deterioration level of an edible oil, comprising:

• acquiring an oil image that is an image of the edible oil;
• applying filter processing to the oil image as acquired, the filter processing being carried out for identifying a feature area that is an area of predetermined air bubbles characterizing deterioration of the edible oil based on a range of a color of air bubbles included in the oil image;
• calculating a feature parameter that is a parameter characterizing the deterioration of the edible oil in the feature area;
• estimating a deterioration indicator of the edible oil based on the feature parameter as calculated;
• and
• determining the deterioration level of the edible oil based on the deterioration indicator as estimated.