Coordinate calibration between two dimensional coordinate system and three dimensional coordinate system

An information processing apparatus that performs coordinate calibration between a two-dimensional (2D) coordinate system and a three-dimensional (3D) coordinate system, said apparatus comprising:

• a 2D camera interface connectable to a 2D camera;
• a 3D camera interface connectable to a 3D camera;
• a driving mechanism configured to move a flat plate placed horizontally in a height direction closer to or apart from the 2D camera and the 3D camera;
• and
• a processor configured to:
• control the driving mechanism to move the flat plate placed horizontally in the height direction to a first position and to a second position different from the first position;
• receive, from the 2D camera interface, first 2D image data of the flat plate at the first position and second 2D image data of the flat plate at the second position;
• receive, from the 3D camera interface, first 3D coordinate information of the flat plate at the first position and second 3D coordinate information of the flat plate at the second position;
• and
• generate a transformation matrix for transforming a 3D coordinate value of a point in a 3D coordinate system to a 2D coordinate value of the point in a 2D coordinate system, based on the first and second 2D image data and the first and second 3D coordinate information.