Abstract: A projection system for projecting an image onto a projection body having a curve in one direction by projection units includes processors and memory, which upon execution, causes the projection system to extract a set of grid points indicating distortion of a projected image from captured calibration images; to convert each set of grid points of a target projection unit commonly extracted from captured calibration images having a calibration pattern projected on the projection body in different imaging ranges in association with the one direction onto a common coordinate system; to combine the converted sets of grid points on the common coordinate system in accordance with position; and to calculate a correction coefficient based on the combined sets of grid points.

Abstract: A projection system for projecting an image onto a projection body having a curve in one direction by projection units includes processors and memory, which upon execution, causes the projection system to extract a set of grid points indicating distortion of a projected image from captured calibration images; to convert each set of grid points of a target projection unit commonly extracted from captured calibration images having a calibration pattern projected on the projection body in different imaging ranges in association with the one direction onto a common coordinate system; to combine the converted sets of grid points on the common coordinate system in accordance with position; and to calculate a correction coefficient based on the combined sets of grid points.

Abstract: A projection system, apparatus, and method in which a plurality of projectors project images to form an image as a whole on a projected area which is a screen area on which a content image is projected without a frame. Images for calibration are output by the plurality of projectors, the images for calibration including positioning markers that are indications for positioning to the corners of the projected area. Correction coefficients are calculated based on reference points of the projected area, and a projection target area is defined which corresponds to the screen area.

Abstract: A projection system includes projection units collectively projecting an image as a whole on a projection area; a generation unit generating correction images including correction points which are used for detecting distortions of projection images based on designated relationships; and a compensation coefficient calculation unit calculating compensation coefficients, based on correction captured images acquired from the correction images on the projection area. Further, margin parts are generated in the correction images in a manner so that parts defining the correction points in the correction images are projected within the projection area while the parts defining correction points in the correction images corresponding to the projection units that are next to each other are overlapped.

Abstract: A projection system includes a plurality of projection units configured to project an image as a whole; a receiver configured to receive an instruction for shifting reference points that define a projection target area onto which the plurality of projection units project the whole image on an occasion of an initial calibration processing; a storage unit configured to store the reference points of the projection target area used in the initial calibration processing; a controller configured to start a recalibration processing in response to an event; a setting unit configured to reset the projection target area based on the reference points stored in the storage unit on an occasion of the recalibration processing; and a correction coefficient calculator configured to calculate correction coefficients for the plurality of projection units based on the projection target area that is reset by the setting unit.

Abstract: A pattern extracting device, an image projecting device, a pattern extracting method, and a program capable of extracting all the feature points by interpolating defective feature points even when there are defective feature points of an image pattern. The pattern extracting device extracts feature points to be interpolated based on a captured image of a projected image pattern, and interpolates the feature point to be interpolated by using near-by feature points that are located near the feature point, divides the near-by feature points into groups, calculates extrapolation coordinates of the groups, and calculates coordinates of the feature point to be interpolated in view of significance of the extrapolation.

Abstract: A projection system for projecting an image onto a projection body by a plurality of projection devices, includes an image preparation unit configured to prepare a plurality of imaging images for calibration, a grid point extraction unit configured to extract a set of grid points that indicates a distortion of a projection image for at least one projection device from each of the plurality of imaging images for calibration, a grid point transformation unit configured to execute a transformation between a plurality of images that are imaged in different imaging ranges on the plurality of imaging images for calibration in such a manner that each set of the grid points that are commonly extracted for a subject projection device is provided in a common coordinate system, a grid point synthesis unit configured to produce a set of the grid points that are synthesized for a subject projection device based on a plurality of sets of the grid points in the common coordinate system, and a correction coefficient calculat

Abstract: An image processing apparatus includes: a first acquiring unit that acquires a first pattern image including a prespecified pattern for being displayed on a display medium by a display unit; a second acquiring unit that acquires, as a second pattern image, a captured image obtained by capturing an image obtained by displaying the first pattern image on the display medium from a desired position except the front of the display medium; and an image processing unit that compares the first pattern image with the second pattern image, and deforms a target image according to a result of the comparison.

Abstract: A projection system includes projection units configured to project an image on a projection body; a preparing unit configured to prepare calibration-use images; an extraction unit configured to extract, from each of the calibration-use images, at least grating points indicating a distortion in a projected image of one of the projection units and alignment points of the projected image of the one of the projection units or another one of the projection units; a conversion unit configured to convert, onto a common coordinate system, the grating points of the projected images of the projection units extracted from the calibration-use images, based on alignment points common to the calibration-use images; and a geometric correction coefficient calculation unit configured to calculate a geometric correction coefficient for providing a projection image to be projected from the projection units, based on the grating points on the common coordinate system.

Abstract: A projection system includes a plurality of projection units configured to project an image as a whole; a receiver configured to receive an instruction for shifting reference points that define a projection target area onto which the plurality of projection units project the whole image on an occasion of an initial calibration processing; a storage unit configured to store the reference points of the projection target area used in the initial calibration processing; a controller configured to start a recalibration processing in response to an event; a setting unit configured to reset the projection target area based on the reference points stored in the storage unit on an occasion of the recalibration processing; and a correction coefficient calculator configured to calculate correction coefficients for the plurality of projection units based on the projection target area that is reset by the setting unit.

Abstract: A projection system includes a plurality of projection units configured to project an image as a whole on a projected area; an output unit configured to output images for calibration to projection units that are in charge of areas of corners of the projected area among the plurality of projection units, the images for calibration including positioning markers that are indications for positioning to the corners of the projected area; a detection unit configured to detect, based on one or more captured images for calibration that are acquired by capturing the projected area and the images for calibration including the positioning markers being projected, reference points that characterize the projected area; and a correction coefficient calculation unit configured to, based on the reference points, define a projection target area relative to the projected area and to calculate correction coefficients that correspond to the plurality of projection units.

Abstract: A pattern processing apparatus includes an acquisition unit, an adjacent element identification unit, a connection unit, and an assigning unit. The acquisition unit acquires a pattern image in which pattern elements are arrayed in a grid, together with coordinate information of the pattern elements. The adjacent element identification unit identifies, for each of the pattern elements thus acquired, adjacent elements, in at least two directions, each having the shortest distance to the each of the pattern elements. The distances between the each of the pattern elements and other pattern elements are calculated using the coordinate information. The connection unit connects and groups, as a connected component, the pattern elements that are adjacent to one another. The assigning unit assigns position information in the array in order from the pattern element which is a starting point, among the pattern elements included in the connected component, according to a predetermined regularity.

Abstract: A pattern processing device includes: an input unit to input an input image containing a plurality of pattern elements; an extraction unit that calculates edge intensities of pixels from the input image so as to extract edge pixels; an evaluation unit that obtains evaluation values for determining whether the pixels are foreground pixels or background pixels, based on comparison result between first thresholds set corresponding to the edge pixels and pixel values of pixels contained in vicinity regions of the edge pixels; a binarization determining unit that determines whether the pixels are the foreground pixels or the background pixels by comparing the evaluation values with a predetermined second threshold, and a coupling component extraction unit that extracts pixel coupling components obtained by coupling the pixels adjacent in any direction among the pixels determined to be the foreground pixels.

Abstract: A pattern processing device includes: an input unit to input an input image containing a plurality of pattern elements; an extraction unit that calculates edge intensities of pixels from the input image so as to extract edge pixels; an evaluation unit that obtains evaluation values for determining whether the pixels are foreground pixels or background pixels, based on comparison result between first thresholds set corresponding to the edge pixels and pixel values of pixels contained in vicinity regions of the edge pixels; a binarization determining unit that determines whether the pixels are the foreground pixels or the background pixels by comparing the evaluation values with a predetermined second threshold, and a coupling component extraction unit that extracts pixel coupling components obtained by coupling the pixels adjacent in any direction among the pixels determined to be the foreground pixels.

Abstract: A pattern processing device includes: an input unit to input an input image containing a plurality of pattern elements; an extraction unit that calculates edge intensities of pixels from the input image so as to extract edge pixels; an evaluation unit that obtains evaluation values for determining whether the pixels are foreground pixels or background pixels, based on comparison result between first thresholds set corresponding to the edge pixels and pixel values of pixels contained in vicinity regions of the edge pixels; a binarization determining unit that determines whether the pixels are the foreground pixels or the background pixels by comparing the evaluation values with a predetermined second threshold, and a coupling component extraction unit that extracts pixel coupling components obtained by coupling the pixels adjacent in any direction among the pixels determined to be the foreground pixels.

Abstract: A projection system includes projection units collectively projecting an image as a whole on a projection area; a generation unit generating corrected images including correction points which are used for detecting distortions of projection images based on designated relationships; and a compensation coefficient calculation unit calculating compensation coefficients, based on correction captured images acquired from the corrected images on the projection area. Further, margin parts are generated in the corrected images in a manner so that parts defining the correction points in the corrected images are projected within the projection area while the parts defining correction points in the corrected images corresponding to the projection units that are next to each other are overlapped.

Abstract: A pattern extracting device, an image projecting device, a pattern extracting method, and a program capable of extracting all the feature points by interpolating defective feature points even when there are defective feature points of an image pattern. The pattern extracting device extracts feature points to be interpolated based on a captured image of a projected image pattern, and interpolates the feature point to be interpolated by using near-by feature points that are located near the feature point, divides the near-by feature points into groups, calculates extrapolation coordinates of the groups, and calculates coordinates of the feature point to be interpolated in view of significance of the extrapolation.

Abstract: A pattern processing apparatus includes an acquisition unit, an adjacent element identification unit, a connection unit, and an assigning unit. The acquisition unit acquires a pattern image in which a plurality of pattern elements are arrayed in a grid, together with coordinate information of the pattern elements. The adjacent element identification unit identifies, for each of the pattern elements thus acquired, adjacent elements, in at least two directions, each having the shortest distance to the each of the pattern elements. The distances between the each of the pattern elements and other pattern elements are calculated using the coordinate information. The connection unit connects and groups, as a connected component, the pattern elements that are adjacent to one another. The assigning unit assigns position information in the array in order from the pattern element which is a starting point, among the pattern elements included in the connected component, according to a predetermined regularity.

Abstract: A projection system for projecting an image onto a projection body by a plurality of projection devices, includes an image preparation unit configured to prepare a plurality of imaging images for calibration, a grid point extraction unit configured to extract a set of grid points that indicates a distortion of a projection image for at least one projection device from each of the plurality of imaging images for calibration, a grid point transformation unit configured to execute a transformation between a plurality of images that are imaged in different imaging ranges on the plurality of imaging images for calibration in such a manner that each set of the grid points that are commonly extracted for a subject projection device is provided in a common coordinate system, a grid point synthesis unit configured to produce a set of the grid points that are synthesized for a subject projection device based on a plurality of sets of the grid points in the common coordinate system, and a correction coefficient calculat

Abstract: An image processing apparatus includes: a first acquiring unit that acquires a first pattern image including a prespecified pattern for being displayed on a display medium by a display unit; a second acquiring unit that acquires, as a second pattern image, a captured image obtained by capturing an image obtained by displaying the first pattern image on the display medium from a desired position except the front of the display medium; and an image processing unit that compares the first pattern image with the second pattern image, and deforms a target image according to a result of the comparison.