Information processing apparatus, information processing method, and recording medium

A method executed by an information processing apparatus comprising:

• performing first calibration of a camera based on a first feature point position of a planar pattern included in a first image captured by the camera and a second feature point position of the planar pattern on world coordinates;
• outputting, based on the first calibration, a deformed pattern obtained by deforming the planar pattern in such a way that the deformed pattern appears on a second image captured by the camera as if the camera were facing the planar pattern;
• acquiring the second image of the deformed pattern captured by the camera;
• and
• performing second calibration of the camera based on a third feature point position of the deformed pattern in the second image and a fourth feature point position of the deformed pattern on the world coordinates.

A non-transitory recording medium storing a program for causing a computer to execute:

• performing first calibration of a camera based on a first feature point position of a planar pattern included in a first image captured by the camera and a second feature point position of the planar pattern on world coordinates;
• outputting, based on the first calibration, a deformed pattern obtained by deforming the planar pattern in such a way that the deformed pattern appears on a second image captured by the camera as if the camera were facing the planar pattern;
• acquiring the second image of the deformed pattern captured by the camera;
• and
• performing second calibration of the camera based on a third feature point position of the deformed pattern in the second image and a fourth feature point position of the deformed pattern on the world coordinates.