Direction control device, direction control method and recording medium

A controlling method, comprising:

• capturing, by a camera, an first image which display a predetermined marker;
• calculating a first position of the predetermined marker in the first image;
• calculating a capturing direction of the camera, based on an information extracted from the predetermined marker, the first position and a second position which is a position of the predetermined marker in a second image, wherein the second image is captured by the camera;
• controlling to change the capturing direction of the camera, based on a calculation result.

A non-transitory computer readable medium storing instructions for causing a computer to execute:

• capturing, by a camera, an first image which display a predetermined marker;
• calculating a first position of the predetermined marker in the first image;
• calculating a capturing direction of the camera, based on an information extracted from the predetermined marker, the first position and a second position which is a position of the predetermined marker in a second image, wherein the second image is captured by the camera;
• controlling to change the capturing direction of the camera, based on a calculation result.