Print medium identification method and print medium identification system

A print medium identification method for identifying a type of print medium, comprising:

• (a) a step of obtaining first physical property information about a print medium;
• (b) a step of obtaining second physical property information, which is different from the first physical property information, about the print medium;
• (c) a step of obtaining first discrimination information for discriminating the type of print medium by inputting the first physical property information to a first discriminator configured as a pre-trained machine learning model;
• (d) a step of obtaining second discrimination information for discriminating the type of print medium by inputting the second physical property information to a second discriminator configured as a pre-trained machine learning model;
• (e) a step of identifying the type of print medium using the first discrimination information and the second discrimination information,
• wherein the step of identifying includes a step of determining the type of print medium in accordance with an integration decision value obtained by adding the first discrimination information and the second discrimination information using different weights.

A print medium identification system for executing medium identification process for identifying a type of print medium, the medium identification process system comprising:

• a memory for storing a first discriminator and a second discriminator configured as pre-trained machine learning models, and
• a processor for executing the medium identification process by using the first discriminator and the second discriminator, wherein:
• the processor is configured to execute
• (a) a process of obtaining first physical property information about a print medium;
• (b) a process of obtaining second physical property information which is different from the first physical property information about the print medium;
• (c) a process of obtaining first discrimination information for discriminating the type of print medium by inputting the first physical property information to the first discriminator using a first teacher data group, which is a collection of the first physical property information;
• (d) a process of obtaining second discrimination information for discriminating the type of print medium by inputting the second physical property information to the second discriminator using a second teacher data group, which is a collection of the second physical property information;
• and
• (e) a process of identifying the type of print medium using the first discrimination information and the second discrimination information.

A print medium identification method for identifying a type of print medium, comprising:

• (a) a step of obtaining first physical property information about a print medium;
• (b) a step of obtaining second physical property information, which is different from the first physical property information, about the print medium;
• (c) a step of obtaining first discrimination information for discriminating the type of print medium by inputting the first physical property information to a first discriminator configured as a pre-trained machine learning model;
• (d) a step of obtaining second discrimination information for discriminating the type of print medium by inputting the second physical property information to a second discriminator configured as a pre-trained machine learning model;
• (e) a step of identifying the type of print medium using the first discrimination information and the second discrimination information, wherein
• the first physical property information is spectral reflectance, and
• the second physical property information is reflectance distribution that includes reflectance ratio at multiple reflection angles for one or more incidence angles.