Information processing apparatus, information processing method, and recording medium

An information processing method comprising:

• acquiring a first coordinate position inside an image of at least one light source included in an image captured with an imaging device among a plurality of light sources whose coordinate positions in a three-dimensional space are known;
• estimating a height of the imaging device in the three-dimensional space;
• performing positioning processing to derive at least either of a coordinate position and an orientation of an own device in the three-dimensional space based on a coordinate position of the at least one light source included in the image in the three-dimensional space, the first coordinate position and the estimated height of the imaging device in the three-dimensional space;
• acquiring a second coordinate position of the light source on the image corresponding to a positioning processing result;
• and
• correcting the height of the imaging device based on the first coordinate position and the second coordinate position.

A non-transitory computer-readable recording medium storing a program causing a computer to at least perform:

• acquire a first coordinate position inside an image of at least one light source included in an image captured with an imaging device among a plurality of light sources whose coordinate positions in a three-dimensional space are known;
• estimate a height of the imaging device in the three-dimensional space;
• perform the positioning processing to derive at least either of a coordinate position and an orientation of an own device in the three-dimensional space based on a coordinate position of the at least one light source included in the image in the three-dimensional space, the first coordinate position and the estimated height of the imaging device in the three-dimensional space;
• acquire a second coordinate position of the light source on the image corresponding to a result of the positioning processing;
• and
• correct the height of the imaging device based on the first coordinate position and the second coordinate position.