Method for controlling projector, projector, and projection system

A projector comprising:

• a projection section configured to project a projection image representing a first mark and a second mark on a projection surface;
• an imaging section configured to generate captured image data representing a captured image by capturing an image of the projection image projected on the projection surface;
• and
• one or more processors programmed to detect a position of the first mark and a position of the second mark based on the captured image data,
• wherein a first distance between the first mark projected on the projection surface and the imaging section is longer than a second distance between the second mark projected on the projection surface and the imaging section,
• wherein a size of the first mark is greater than a size of the second mark,
• wherein the one or more processors are programmed to
• receive a position change instruction that instructs a change in a position of the projection image, and
• change the position of the projection image, the size of the first mark, and the size of the second mark based on the position change instruction, and
• wherein when the position change instruction is an instruction that instructs movement of the position of the projection image in a direction away from the imaging section, the one or more processors are programmed to set the size of the first mark after the change so as to be greater than the size of the first mark before the change.

A method for controlling a projector including an imaging section, the method comprising:

• projecting a projection image representing a first mark and a second mark on a projection surface;
• generating captured image data representing a captured image by causing the imaging section to capture an image of the projection image projected on the projection surface via a fisheye lens;
• and
• detecting a position of the first mark and a position of the second mark based on the captured image data,
• wherein a distance between a position of a center of the fisheye lens in the captured image and the first mark in the captured image is longer than or equal to a distance between the position of the center of the fisheye lens in the captured image and the second mark in the captured image, and
• a size of the first mark is greater than a size of the second mark in the captured image.

A projector comprising:

• a projection section configured to project a projection image representing a first mark and a second mark on a projection surface;
• an imaging section configured to generate captured image data representing a captured image by capturing an image of the projection image projected on the projection surface via a fisheye lens;
• and
• one or more processors programmed to detect a position of the first mark and a position of the second mark based on the captured image data,
• wherein a distance between a position of a center of the fisheye lens in the captured image and the first mark in the captured image is longer than or equal to a distance between the position of the center of the fisheye lens in the captured image and the second mark in the captured image, and
• a size of the first mark is greater than a size of the second mark in the captured image.