Abstract: A first display panel has a first side orthogonal to a first axis. A projection image adjustment method includes: acquiring, based on calculation data, a normal direction of a projection surface; acquiring, based on the calculation data, a first direction corresponding to the first axis and parallel to a second axis in a first projection image projected onto the projection surface; acquiring a second direction orthogonal to the normal direction and the first direction; adjusting a shape of a second projection image including a portion of a rectangular first display image including a second side orthogonal to the first direction and a third side orthogonal to the second direction such that the first display image is displayed on the projection surface; and projecting the second projection image from a first projector onto the projection surface.

Abstract: A method of outputting a pattern image includes outputting the pattern image which is used in a phase shift method, and which includes a first area having first luminance based on at least a first phase in a first period, and including a plurality of pixels adjacent to each other, and a second area different from the first area, having second luminance based on at least a second phase in the first period different from the first phase, and including a plurality of pixels adjacent to each other.

Abstract: A projection image adjustment method includes: acquiring a first captured image corresponding to a first device including a first lens by capturing an image of a plane projection surface on which a first pattern image including at least four unit images is projected from a first projection device; acquiring a second captured image corresponding to a second device including a second lens by capturing an image of the projection surface; acquiring, based on the first captured image and the second captured image, a projective transformation matrix indicating transformation from a first coordinate system in a first device to a second coordinate system in a second device; and acquiring a plane parameter of the projection surface by using the projective transformation matrix.

Abstract: A display control method includes: changing a display mode of a target image when an instruction image is located in a control region of the target image that includes a display position where the target image is displayed, the target image being one of a plurality of control images for correcting a projection image projected by a projector.

Abstract: A position detection method includes projecting a first pattern image on a display surface, the first pattern image including a first region having a first color corresponding to a first portion of a first identification information indicating the first region and a second region having a second color corresponding to a first portion of a second identification information, obtaining a first captured image by capturing the display surface, projecting a second pattern image onto the display surface including the first region having a third color which corresponds to a second portion of the first identification information and the second region having a fourth color corresponding to a second portion of the second identification information, obtaining a second captured image by capturing the display surface, associating a first position in an image projected with a second position in a third captured image obtained by capturing the display surface.

Abstract: A projector includes a projection section that projects a first image on a projection surface, a control section that causes the projection section to project a pattern image for installation including a first pattern that is located at an end of the first image, which overlaps with a second image, and a second pattern that is so disposed that a first straight line section is located in a position separate from the end by a distance, and a correction section that corrects the first image based on a captured image containing an image of a first area of the second image, and the first area is an area that overlaps with an area having a width corresponding to the distance measured from the end of the first image in a state in which the first image and the second image overlap with each other.

Abstract: A position detection method includes projecting a first pattern image on a display surface, the first pattern image including a first region having a first color corresponding to a first portion of a first identification information indicating the first region and a second region having a second color corresponding to a first portion of a second identification information, obtaining a first captured image by capturing the display surface, projecting a second pattern image onto the display surface including the first region having a third color which corresponds to a second portion of the first identification information and the second region having a fourth color corresponding to a second portion of the second identification information, obtaining a second captured image by capturing the display surface, associating a first position in an image projected with a second position in a third captured image obtained by capturing the display surface.

Abstract: A projector includes a projection section that projects a first image on a projection surface, a control section that causes the projection section to project a pattern image for installation including a first pattern that is located at an end of the first image, which overlaps with a second image, and a second pattern that is so disposed that a first straight line section is located in a position separate from the end by a distance, and a correction section that corrects the first image based on a captured image containing an image of a first area of the second image, and the first area is an area that overlaps with an area having a width corresponding to the distance measured from the end of the first image in a state in which the first image and the second image overlap with each other.

Abstract: A method of controlling a display system including the steps of projecting, by a plurality of group-belonging projectors, an image in one display area corresponding to one projector group to thereby display one composite image corresponding to the one projector group out of a plurality of composite images corresponding one-to-one to a plurality of projector groups in the one display area, estimating, by a control device, brightness of the plurality of composite images, identifying, by the control device, a dark image which is the darkest and a first adjustment target image different from the dark image from the plurality of composite images based on a result of the brightness estimation, and controlling, by the control device, at least one projector in the projector group corresponding to the first adjustment target image to thereby approximate brightness of the first adjustment target image to brightness of the dark image.

Abstract: A method of controlling a display system including the steps of projecting, by one of the first projectors, a first image in one area, projecting, by one of the second projectors, a second image in the one area, estimating, by the control device, brightness of the plurality of first images and brightness of the plurality of second images, identifying, by the control device, a first dark image as the darkest image and a first adjustment target image, and identifying a second dark image as the darkest image and a second adjustment target image, and controlling, by the control device, a projector to thereby approximate the brightness of the first adjustment target image to the brightness of the first dark image, and controlling a projector to thereby approximate the brightness of the second adjustment target image to the brightness of the second dark image.

Abstract: A projector includes a projection section that projects a first image on a projection surface, a control section that causes the projection section to project a pattern image for installation including a first pattern that is located at an end of the first image, which overlaps with a second image, and a second pattern that is so disposed that a first straight line section is located in a position separate from the end by a distance, and a correction section that corrects the first image based on a captured image containing an image of a first area of the second image, and the first area is an area that overlaps with an area having a width corresponding to the distance measured from the end of the first image in a state in which the first image and the second image overlap with each other.

Abstract: A projector includes a projection section that projects a first image on a projection surface, a control section that causes the projection section to project a pattern image for installation including a first pattern that is located at an end of the first image, which overlaps with a second image, and a second pattern that is so disposed that a first straight line section is located in a position separate from the end by a distance, and a correction section that corrects the first image based on a captured image containing an image of a first area of the second image, and the first area is an area that overlaps with an area having a width corresponding to the distance measured from the end of the first image in a state in which the first image and the second image overlap with each other.

Abstract: A method of controlling a display system including the steps of projecting, by a plurality of group-belonging projectors, an image in one display area corresponding to one projector group to thereby display one composite image corresponding to the one projector group out of a plurality of composite images corresponding one-to-one to a plurality of projector groups in the one display area, estimating, by a control device, brightness of the plurality of composite images, identifying, by the control device, a dark image which is the darkest and a first adjustment target image different from the dark image from the plurality of composite images based on a result of the brightness estimation, and controlling, by the control device, at least one projector in the projector group corresponding to the first adjustment target image to thereby approximate brightness of the first adjustment target image to brightness of the dark image.

Abstract: A method of controlling a display system including the steps of projecting, by one of the first projectors, a first image in one area, projecting, by one of the second projectors, a second image in the one area, estimating, by the control device, brightness of the plurality of first images and brightness of the plurality of second images, identifying, by the control device, a first dark image as the darkest image and a first adjustment target image, and identifying a second dark image as the darkest image and a second adjustment target image, and controlling, by the control device, a projector to thereby approximate the brightness of the first adjustment target image to the brightness of the first dark image, and controlling a projector to thereby approximate the brightness of the second adjustment target image to the brightness of the second dark image.

Abstract: A projector includes a projection section that projects a projection image on a projection surface, a display control section that displays a marker on the projection image, an imaging section that captures an image of the projection surface to produce a captured image, a detection section that detects a change in the position of the marker based on the captured image, and a processing section that carries out a predetermined process when the change in the position of the marker is detected.

Abstract: A projection system which arranges n×m projection images and forms one composite projection image on a projection surface includes: n×m projectors; an operation unit which accepts an operation by a user; and a control unit which controls the projection by each of the n×m projectors. The control unit causes a reference image showing a reference point common to a plurality of projection areas to be projected in an overlap area where the plurality of projection areas overlap each other, and causes each of a plurality of projectors projecting the projection image in the overlap are where the reference image to be moved is projected, to execute geometric correction of the projection image in such a way that the reference image moves to a position on the projection surface designated by the user by the operation via the operation unit, and to project the projection image.

Abstract: A target color is set on the basis of a first captured image obtained by capturing, with an imaging section, at least apart of a first image projected by a projection optical system of a projector. First correction data for correcting a color of a projected image of another projector to the target color is calculated on the basis of a second captured image obtained by capturing, with the imaging section, at least a part of a second image projected by the projection optical system of the other projector.

Abstract: A projection system which arranges n×m projection images and forms one composite projection image on a projection surface includes: n×m projectors; an operation unit which accepts an operation by a user; and a control unit which controls the projection by each of the n×m projectors. The control unit causes a reference image showing a reference point common to a plurality of projection areas to be projected in an overlap area where the plurality of projection areas overlap each other, and causes each of a plurality of projectors projecting the projection image in the overlap are where the reference image to be moved is projected, to execute geometric correction of the projection image in such a way that the reference image moves to a position on the projection surface designated by the user by the operation via the operation unit, and to project the projection image.

Abstract: An image processing device includes: an acquisition unit which successively acquires a gradation value of a target pixel specified in a predetermined order, from image data of an input image; a first computing unit which computes coordinates of the target pixel in an output image; a second computing unit which computes a gradation value at the coordinates, based on the gradation value of the target pixel; an internal storage unit which stores, block by block, each block being formed by dividing a plurality of pixels included in the output image, gradation values of the plurality of pixels; a first writing unit which writes the gradation value computed by the second computing unit into a storage area corresponding to the coordinates; and a second writing unit which writes data of a block where the writing of the gradation value is complete, into an external memory.

Abstract: A target color is set on the basis of a first captured image obtained by capturing, with an imaging section, at least a part of a first image projected by a projection optical system of a projector. First correction data for correcting a color of a projected image of another projector to the target color is calculated on the basis of a second captured image obtained by capturing, with the imaging section, at least a part of a second image projected by the projection optical system of the other projector.