Abstract: There is provided an adjustment method including, identifying correspondence between a projector coordinate system and a camera coordinate system, detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image, estimating a range of first brightness of a third area of a second image, estimating a range of second brightness of a fourth area of the second image, and adjusting brightness of a fifth area corresponding to the third area in a projection image projected from the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness.

Abstract: A position specifying method includes generating relation information based on first coordinates and second coordinates, the first coordinates indicating coordinates of a portion of a target object in three dimensions, at which a specific point is located, in a state where a projector projects the projection image having the specific point onto the target object, the second coordinates indicating coordinates of the specific point in the projection image in two dimensions, the relation information indicating a correspondence between a three-dimensional coordinate system and a projector coordinate system, the three dimensional coordinate system being used by a measuring instrument that specifies the first coordinates, the projector coordinate system defining the second coordinates and coordinates of the projector, and specifying a position of the projector in the three-dimensional coordinate system based on the coordinates of the projector, by using the relation information.

Abstract: An estimation method includes projecting a pattern image onto an object via a zoom lens, generating imaging data by capturing the pattern image on the object, estimating, based on the imaging data, a position of a principal point of the zoom lens during the projection of the pattern image, and estimating, based on a first characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a first position and a second characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a second position, a characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in the estimated position.

Abstract: A projector includes a correction information generation unit, an image information correction unit, and an image projection unit. The correction information generation unit sets a first coordinate in a two-dimensional projection formed by flattening out a three-dimensional projection surface onto a plane. The correction information generation unit arranges a first quadrilateral having a first aspect ratio within the two-dimensional projection, based on the first coordinate as a reference position, in such a way that the first quadrilateral comes into contact with an outline of the two-dimensional projection. The correction information generation unit determines whether the first quadrilateral is in contact with the outline of the two-dimensional projection at two or more points, or not.

Abstract: A projection method includes, obtaining a first image obtained by imaging a projection target with a camera, receiving an operation of a user drawing a drawing object in the first image, generating first object information representing a two-dimensional position of the drawing object in the first image, converting the first object information into second object information, converting the second object information into third object information representing a position of the drawing object on an image to be projected from a projector based on second position information representing a relative three-dimensional position between the projector and the projection target and second posture information representing an orientation of an optical axis of the projector, and projecting a projection image including the drawing object on the projection target from the projector.

Abstract: A body fluid analysis device that irradiates a body fluid in a tube having translucency with light and analyzes the body fluid on the basis of light having passed through the tube is adapted to include: a base; an attachment that is attached to the base 1 so that the tube is pinched in its radial direction between the attachment and the base; a light emitting element that is provided to the base or the attachment; and a light receiving element that is provided to the base or the attachment, in which in a state where the attachment is attached to the base, between the base and the attachment, the light emitting element and the light receiving element are arranged so as to pinch the tube in the radial direction, or both of the light emitting element and the light receiving element are arranged in the base or the attachment.

Abstract: A method for controlling an electronic instrument including a projection section that projects an image via a projection lens and an imaging section that performs imaging via an imaging lens includes causing a first storage to store first characteristic data representing the characteristics of the projection lens, second characteristic data representing the characteristics of the imaging lens, and arrangement data representing the arrangement of the projection lens and the imaging lens and then causing the projection section to project a pattern image on an object via the projection lens, causing the imaging section to capture an image of the pattern image on the object via the imaging lens to generate captured image data, and updating the arrangement data based on the captured image data, the first characteristic data, and the second characteristic data without updating the first characteristic data and the second characteristic data.

Abstract: A measurement method includes measuring a normal vector of a measured portion based on a first vector representing a direction from a measured portion to a principal point of a first lens, a second vector representing a direction from the measured portion to a principal point of a second lens, a third vector representing a direction from the measured portion to a principal point of a third lens, a first value representing luminance of the measured portion in a situation in which the first projector projects a fourth image via the first lens, a second value representing the luminance of the measured portion in a situation in which the second projector projects a fifth image via the second lens, and a third value representing the luminance of the measured portion in a situation in which the third projector projects a sixth image via the third lens.

Abstract: A display method includes acquiring captured image data generated by capturing an image of a second area containing a first area, the captured image data containing first partial data representing an image of the first area and second partial data representing an image of the second area, recognizing an object located in the first area by using the first partial data with no use of the second partial data, displaying a first image that underwent a first process according to the position of the object when the object is recognized as a first pointing element and when the object moves from the first area onto a display surface, and displaying a second image that underwent a second process according to the position of the object when the object is recognized as a second pointing element and when the object moves from the first area onto the display surface.

Abstract: A projector is provided with a correction information generator and an image information corrector described below. The correction information generator estimates a reference plane having a normal vector that is the cross product of the average of normal vectors in N regions in the result of measurement of the shape of a projection surface and a first vector corresponding to a component having the largest degree of dispersion among the N normal vectors. The correction information generator estimates an imaginary projection surface by causing the result of projection of the projection surface on the reference surface to rise upright with respect to the reference surface and generates image correction information based on the imaginary projection surface. The image information corrector generates correction image information from image information on a projection image and the correction information. The projector projects an image based on the correction image information on the projection surface.

Abstract: A position specifying method includes generating relation information based on first coordinates and second coordinates, the first coordinates indicating coordinates of a portion of a target object in three dimensions, at which a specific point is located, in a state where a prof ector projects the projection image having the specific point onto the target object, the second coordinates indicating coordinates of the specific point in the projection image in two dimensions, the relation information indicating a correspondence between a three-dimensional coordinate system and a projector coordinate system, the three dimensional coordinate system being used by a measuring instrument that specifies the first coordinates, the projector coordinate system defining the second coordinates and coordinates of the projector, and specifying a position of the projector in the three-dimensional coordinate system based on the coordinates of the projector, by using the relation information.

Abstract: There is provided an adjustment method including, identifying correspondence between a projector coordinate system and a camera coordinate system, detecting brightness of a first area of a second captured image and brightness of a second area of the second captured image, estimating a range of first brightness of a third area of a second image, estimating a range of second brightness of a fourth area of the second image, and adjusting brightness of a fifth area corresponding to the third area in a projection image projected from the projector so as to fall within the range of the first brightness and adjusting brightness of a sixth area corresponding to the fourth area in the projection image so as to fall within the range of the second brightness.

Abstract: A projector is provided with a correction information generator and an image information corrector described below. The correction information generator estimates a reference plane having a normal vector that is the cross product of the average of normal vectors in N regions in the result of measurement of the shape of a projection surface and a first vector corresponding to a component having the largest degree of dispersion among the N normal vectors. The correction information generator estimates an imaginary projection surface by causing the result of projection of the projection surface on the reference surface to rise upright with respect to the reference surface and generates image correction information based on the imaginary projection surface. The image information corrector generates correction image information from image information on a projection image and the correction information. The projector projects an image based on the correction image information on the projection surface.

Abstract: A method for controlling an electronic instrument including a projection section that projects an image via a projection lens and an imaging section that performs imaging via an imaging lens includes causing a first storage to store first characteristic data representing the characteristics of the projection lens, second characteristic data representing the characteristics of the imaging lens, and arrangement data representing the arrangement of the projection lens and the imaging lens and then causing the projection section to project a pattern image on an object via the projection lens, causing the imaging section to capture an image of the pattern image on the object via the imaging lens to generate captured image data, and updating the arrangement data based on the captured image data, the first characteristic data, and the second characteristic data without updating the first characteristic data and the second characteristic data.

Abstract: A projector includes a correction information generation unit, image information correction unit, and image projection unit. The generation unit sets a first coordinate in a two-dimensional projection formed by flattening out a three-dimensional projection surface onto a plane. The generation unit arranges a first quadrilateral having a first aspect ratio within the two-dimensional projection, based on the first coordinate as a reference position, so that the first quadrilateral comes into contact with an outline of the two-dimensional projection. The generation unit determines whether the first quadrilateral is in contact with the outline at two or more points. When the first quadrilateral is determined as being in contact with the outline at two or more points, the correction unit corrects image information, based on the first quadrilateral, and thus generates corrected image information. The image projection unit projects an image based on the corrected image information onto the projection surface.

Abstract: An estimation method includes projecting a pattern image onto an object via a zoom lens, generating imaging data by capturing the pattern image on the object, estimating, based on the imaging data, a position of a principal point of the zoom lens during the projection of the pattern image, and estimating, based on a first characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a first position and a second characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in a second position, a characteristic value representing a characteristic of the zoom lens at time when the principal point of the zoom lens is present in the estimated position.

Abstract: An image recognition device, an image recognition method and an image recognition unit capable of performing touch recognition high in accuracy. The image recognition device includes a pattern display section adapted to display a first pattern in which bright lines are arranged with a first pitch, and a second pattern in which bright lines are arranged with a second pitch at respective time points different from each other, a measurement point determination section adapted to detect a finger located between a camera and a screen, and determine a fingertip of the finger, and a position detection section adapted to detect the position of the fingertip with respect to the screen based on an image including the first pattern and an image including the second pattern obtained by the camera.

Abstract: A body fluid analysis device that irradiates a body fluid in a tube having translucency with light and analyzes the body fluid on the basis of light having passed through the tube is adapted to include: a base; an attachment that is attached to the base 1 so that the tube is pinched in its radial direction between the attachment and the base; a light emitting element that is provided to the base or the attachment; and a light receiving element that is provided to the base or the attachment, in which in a state where the attachment is attached to the base, between the base and the attachment, the light emitting element and the light receiving element are arranged so as to pinch the tube in the radial direction, or both of the light emitting element and the light receiving element are arranged in the base or the attachment.

Abstract: The image recognition device includes a measurement point determination section adapted to detect a finger located between a camera and a screen from an image obtained by the camera, and determine a fingertip of the finger, a linear pattern display section adapted to make a projector display a linear pattern on an epipolar line which passes through the fingertip and is determined from a positional relationship between the camera and a projector, and a pattern determination section adapted to determine, from an image including the linear pattern obtained by the camera, a difference between the linear pattern included in that image, and the linear pattern in a case in which the fingertip is absent.

Abstract: A display method includes acquiring captured image data generated by capturing an image of a second area containing a first area, the captured image data containing first partial data representing an image of the first area and second partial data representing an image of the second area, recognizing an object located in the first area by using the first partial data with no use of the second partial data, displaying a first image that underwent a first process according to the position of the object when the object is recognized as a first pointing element and when the object moves from the first area onto a display surface, and displaying a second image that underwent a second process according to the position of the object when the object is recognized as a second pointing element and when the object moves from the first area onto the display surface.