A system and a process for accurately aligning projection mapping systems using the assistance of camera sensors. The calibration process involves first projecting a modulated gray code image sequence that allows the calibration cameras to identify a dense set of image correspondences between the calibration cameras and the projectors. The calibration cameras are then aligned to the screen surface through the selection of key points or fiducials on the screen surface that are then identified in the camera images. Once the camera(s) are aligned to the screen surface, the image correspondences between the projectors and cameras are used to determine the alignment of the projectors to the screen surface.

In a method for ascertaining predistortion data (2) for a projection from a projector (4) onto a target surface (13) with known geometry data, a camera (10) is placed in a known relative pose (RKP) with respect to the projector and aligned toward the target surface (13), the relative pose of the camera with respect to the target surface (RKZ) is ascertained from a camera image by means of machine vision, and the relative pose (RPZ) of the projector (4) with respect to the target surface (13) is ascertained herefrom and from the relative pose (RKP), and the predistortion data (2) are ascertained on the basis of the geometry data and of the relative pose (RPZ) of the projector (4) with respect to the target surface (13). A projector module (22) contains a calculation unit (3) for performing the method, and the projector (4) and the camera (10). The camera (10) of the projector module (22) or in the method is used for optically monitoring the interior (5). An interior camera is used as the camera (10) of the projector module (22) or in the method.

An image processing device includes: an image acquisition unit that acquires first and second image data for projecting the image from the first and second projection units respectively; a superimposed region information acquisition unit that acquires information on a superimposed region between the projection range of the first projection unit and the projection range of the second projection unit; a first image processing unit that performs first image processing on a first portion in the first image data corresponding to the superimposed region; a second image processing unit that performs second image processing on a second portion in the second image data corresponding to the superimposed region; and an output unit that outputs the first image data after the first image processing as image data for the first projection unit and outputs the second image data after the second image processing as image data for the second projection unit.

A projection apparatus executes a first processing and a second processing on image signal received from an external device, projects an image based on the image signal processed by an image processor, and switches an operation mode of the projection apparatus to a first mode, which is a low-latency mode for suppressing a delay in displaying an image, and a second mode, which is not the low-latency mode. The image processor maintains the first processing and stops the second processing in response that the operation mode of the projection apparatus is switched to the first mode from a state in which the operation mode is the second mode and the first processing and the second processing are executed.

A method for controlling a projector having a projection lens and a camera includes an acquisition step of acquiring a focal distance of the projection lens, a determination step of determining a size and an interval of dots configuring a projection pattern based on the focal distance, a projection step of projecting the projection pattern by the projection lens, and capturing step of capturing the projection pattern by the camera to generate a captured image.

A control method of a spectroscopic imaging device including an imaging element and a spectral element, the control method includes causing the spectroscopic imaging device to generate a first measurement spectrum consisting of N1 wavelengths by imaging a target object by making output wavelengths of a spectral element different when the spectroscopic imaging device is in a high accuracy mode and causing the spectroscopic imaging device to generate a second measurement spectrum consisting of N2 wavelengths by imaging the target object by making the output wavelengths of the spectral element different when the spectroscopic imaging device is in a high speed mode, in which N1 is an integer greater than or equal to two, and N2 is an integer less than N1.

A display control device includes a processor. The processor being configured to: output an image to a projection unit for projecting an image onto an interior surface of a vehicle; acquire vision information of an occupant of the vehicle; detect misalignment between a target image projected onto the interior surface and a design-reference state of the target image based on vision information acquired while the occupant fixates on the target image projected onto the interior surface; and correct an image projected by the projection unit based on the misalignment.

An apparatus includes a projection unit configured to project a video image, a capturing unit configured to capture an image, an identification unit configured to identify a shape of a surface onto which the video image is to be projected, based on the captured image, an inference unit configured to infer a viewpoint position and an attitude of a viewer of the video image based on the captured image, a correction unit configured to correct the video image based on the shape of the surface and the viewpoint position and the attitude of the viewer, and a control unit configured to control the projection unit to project the corrected video image.

An interactive multimedia device designed to display an image on a flat surface below the device, e.g., on the floor. The interactive multimedia device has a housing (10) which comprises a projector (11), at least one loudspeaker (12), a camera (13), an IR illuminator (15), a power supply module, and a control unit (16), wherein the housing (10) has vents (6) of housing (10), wherein the vents (6) of housing (10) have the same size and shape as those of the vents (17) of projector (11), wherein the vents (6) of housing (10) are oriented in the same way as the vents (17) of projector (11) and the vents (6) of housing (10) are located above the vents (17) of the projector (11).

The invention relates to a system for variable marking of a playing field (1), comprising at least two marking devices (2) designed as laser projectors, an analysis device designed to analyse a calibration pattern (3) projected onto the playing field (1) by means of a marking device (2), as well as designed to determine a distortion function from the calibration pattern (3), a control device designed to determine the position of a marking pattern (4) on the playing field (1), and a transformation device designed to apply the distortion function to the marking pattern (4) in order to obtain a target marking (5). The invention further relates to a method for variable marking of a playing field (1).