Projector, multi-projection system, and method for controlling projector

A multi-projection system that projects an image on a projection surface, the image formed of a plurality of partial images including a first partial image, a second partial image, and a third partial image, the multi-projection system comprising:

• a first projector that projects the first partial image on the projection surface;
• a second projector that projects the second partial image on the projection surface;
• and
• a third projector that projects the third partial image on the projection surface,
• the third projector transmits to the first projector a first adjustment instruction of adjusting a projection area of the first partial image based on a projection area of the third partial image,
• the first projector adjusts the projection area of the first partial image in accordance with the first adjustment instruction,
• the third projector, after transmitting the first adjustment instruction, transmits to the second projector a second adjustment instruction of adjusting a projection area of the second partial image based on the projection area of the first partial image, and
• the second projector adjusts the projection area of the second partial image in accordance with the second adjustment instruction.

A method for controlling a projector that is allowed to belong to a multi-projection system that projects an image on a projection surface, the image formed of a plurality of partial images including a first partial image, a second partial image, and a third partial image, the method comprising:

• projecting the third partial image on the projection surface;
• transmitting, to a first projector that projects the first partial image, a first adjustment instruction of adjusting a projection area of the first partial image based on a projection area of the third partial image;
• and
• transmitting, to a second projector that projects the second partial image after transmitting the first adjustment instruction, a second adjustment instruction of adjusting a projection area of the second partial image based on the projection area of the first partial image.