Information processing program, information processing apparatus, and information processing method

An information processing apparatus, comprising:

• a controller comprising a processor or circuit and configured to function as:
• an acquisition unit that acquires an image including a fish group, the image including:
• an indistinct region that is a region where individual fish included in the fish group are unable to be visually distinguished;
• and a shadow region corresponding to a shadow of a fish group corresponding to the indistinct region;
• and
• an estimation unit that estimates information related to a volume of space between fish included in the fish group corresponding to the indistinct region, and estimates, based on the information related to the volume of the space between the fish, a fish count for the fish included in the fish group corresponding to the indistinct region.

An information processing method implemented by a program executed by an information processing apparatus, the information processing method including:

• acquiring an image including a fish group, the image including:
• an indistinct region that is a region where individual fish included in the fish group are unable to be visually distinguished;
• and a shadow region corresponding to a shadow of a fish group corresponding to the indistinct region;
• and
• of estimating information related to a volume of space between fish included in the fish group corresponding to the indistinct region, and estimating, based on the information related to the volume of the space between the fish, a fish count for the fish included in the fish group corresponding to the indistinct region.