Projector, image projection system, and method for controlling projector

An image projection system comprising:

• a first projector that projects a pattern image on a projection surface;
• and
• a second projector that projects a second image on the projection surface in such a way that part of the second image overlaps with the pattern image,
• wherein the first projector includes a lens that projects a pattern image including a first pattern and a second pattern,
• the first pattern is disposed along a first end of the pattern image, the first end overlaps with the second image, and the first pattern is a linear pattern,
• the second pattern includes a plurality of rectangular patterns, the plurality of rectangular patterns is disposed in a first area separated from the first pattern by a first distance, and is arranged in a direction parallel to the first end of the pattern image,
• the first distance corresponds to a width of a second area of the pattern image, and the second area is an area overlapped with the second image,
• the plurality of rectangular patterns include a first rectangular pattern and a second rectangular pattern,
• a right edge of the first rectangular pattern is parallel to the first pattern, and
• an entire right edge of the second rectangular pattern overlaps an extension of the right edge of the first rectangular pattern.

A method for controlling a projector, the method comprising:

• projecting, by the projector, a pattern image including a first pattern and a second pattern,
• wherein
• the first pattern is disposed along a first end of the pattern image, the first end overlaps with a second image projected by a first other projector, and the first pattern is a linear pattern,
• the second pattern includes a plurality of rectangular patterns, the plurality of rectangular patterns is disposed in a first area separated from the first pattern by a first distance, and is arranged in a direction parallel to the first end of the pattern image,
• the first distance corresponds to a width of a second area of the pattern image, and the second area is an area overlapped with the second image,
• the plurality of rectangular patterns include a first rectangular pattern and a second rectangular pattern,
• a right edge of the first rectangular pattern is parallel to the first pattern, and
• an entire right edge of the second rectangular pattern overlaps an extension of the right edge of the first rectangular pattern.

A method for generating a pattern image, the method comprising:

• generating a pattern image, projected by a first projector, including a first pattern and a second pattern,
• wherein
• the first pattern is disposed along a first end of the pattern image, the first pattern is a linear pattern,
• the second pattern includes a plurality of rectangular patterns, the plurality of rectangular patterns is in a first area separated from the first pattern by a first distance, and is arranged in a direction parallel to the first end of the pattern image,
• the first distance corresponds to a width of a second area of the pattern image, and the second area is an area overlapped with the second image projected by a first other projector,
• the plurality of rectangular patterns include a first rectangular pattern and a second rectangular pattern,
• a right edge of the first rectangular pattern is parallel to the first pattern, and
• an entire right edge of the second rectangular pattern overlaps an extension of the right edge of the first rectangular pattern.