Image processing apparatus, image processing method, and program

An image processing method comprising:

• acquiring a plurality of three-dimensional coordinates for specifying positions of a plurality of pixels included in a three-dimensional image showing a target object in a real space, generated based on a plurality of two-dimensional images obtained by imaging the target object from a plurality of imaging positions in the real space at a plurality of viewpoints corresponding to the respective imaging positions, and a plurality of two-dimensional coordinates for specifying positions corresponding to the plurality of pixels in a screen on which the three-dimensional image is rendered;
• acquiring unit length information indicating a relationship between a first unit length of a three-dimensional coordinate system defining the three-dimensional coordinates, and a second unit length of the real space;
• generating an object of which the second unit length is specifiable, based on the plurality of three-dimensional coordinates, the plurality of two-dimensional coordinates, and the unit length information;
• and
• outputting a first image in which the object and the three-dimensional image are shown in a comparable manner.

A non-transitory computer-readable storage medium storing a program causing a computer to execute a process comprising:

• acquiring a plurality of three-dimensional coordinates for specifying positions of a plurality of pixels included in a three-dimensional image showing a target object in a real space, generated based on a plurality of two-dimensional images obtained by imaging the target object from a plurality of imaging positions in the real space at a plurality of viewpoints corresponding to the respective imaging positions, and a plurality of two-dimensional coordinates for specifying positions corresponding to the plurality of pixels in a screen on which the three-dimensional image is rendered;
• acquiring unit length information indicating a relationship between a first unit length of a three-dimensional coordinate system defining the three-dimensional coordinates, and a second unit length of the real space;
• generating an object of which the second unit length is specifiable, based on the plurality of three-dimensional coordinates, the plurality of two-dimensional coordinates, and the unit length information;
• and
• outputting a first image in which the object and the three-dimensional image are shown in a comparable manner.