Information processing apparatus, information processing method and storage medium

An information processing method comprising the steps of:

• deriving, by performing a feature point comparison to compare a feature point extracted from a whole image obtained by capturing in advance the whole of an object and a feature point extracted from a first image obtained by capturing the object, first transform information used for coordinate transform between a coordinate system in the whole image and a coordinate system in the first image;
• deriving, by performing a feature point tracking to track a position of a feature point extracted from the first image for a plurality of images input sequentially following the first image, second transform information used for coordinate transform between a coordinate system of the first image and a coordinate system of a second image of the plurality of images;
• and
• deriving third transform information used for coordinate transform between a coordinate system in the whole image and a coordinate system in the second image by combining the first transform information and the second transform information.

A non-transitory computer readable storage medium storing a program for causing a computer to perform an information processing method comprising the steps of:

• deriving, by performing a feature point comparison to compare a feature point extracted from a whole image obtained by capturing in advance the whole of an object and a feature point extracted from a first image obtained by capturing the object, first transform information used for coordinate transform between a coordinate system in the whole image and a coordinate system in the first image;
• deriving, by performing a feature point tracking to track a position of a feature point extracted from the first image for a plurality of images input sequentially following the first image, second transform information used for coordinate transform between a coordinate system of the first image and a coordinate system of a second image of the plurality of images;
• and
• deriving third transform information used for coordinate transform between a coordinate system in the whole image and a coordinate system in the second image by combining the first transform information and the second transform information.