Growth evaluation device, growth evaluation method, and growth evaluation program

A growth evaluation method comprising:

• an extraction step of extracting, from an image captured by a camera disposed to face a pen in which a plurality of pigs are raised, a buttock image having buttocks of one of the pigs facing forward;
• an arithmetic step of arithmetically determining a buttock width from the buttock image;
• and
• evaluating a degree of growth of all the plurality of pigs on the basis of a prescribed number or more of the buttock widths arithmetically determined in the arithmetic step.

A growth evaluation program for causing a computer to execute:

• an extraction step of extracting, from an image captured by a camera disposed to face a pen in which a plurality of pigs are raised, a buttock image having buttocks of one of the pigs facing forward;
• an arithmetic step of arithmetically determining a buttock width from the buttock image;
• and
• an evaluation step of evaluating a degree of growth of all the plurality of pigs on the basis of a prescribed number or more of the buttock widths arithmetically determined in the arithmetic step.