Abstract: A terminal device mainly includes: a display module (21), a middle frame (22) for fixing the display module (21), a light-guiding column (23) embedded on the middle frame (22), and an ambient light sensor (24) located at bottom of the light-guiding column (23), wherein a light-entry surface of the light-guiding column (23) guides ambient light to the ambient light sensor (24).

Abstract: Provided is a display capable of displaying augmented reality (AR) in which background visibility is maintained and a hotspot is not visible. The display includes, at least: a transparent screen; a projection device for projecting a projection image on the transparent screen; and a sheet-shaped light guide plate for guiding the projection image, in which the projection device is disposed so that light of the projection image is incident from an end portion of the light guide plate, and the transparent screen is attached to at least one of main surfaces of the light guide plate.

Abstract: An image processing apparatus that transforms distortion of an image projected by a projection apparatus includes an obtaining unit and a transformation unit. The obtaining unit is configured to obtain a captured image acquired by capturing a projected image including a pattern image projected by the projection apparatus. The pattern image contains at least three objects having different appearances from one area to another. The transformation unit is configured to specify a local area in the captured image and transform the local area based on a positional relationship among the at least three objects in the local area. The transformation unit transforms the local area by using a positional relationship between an object of a first appearance and an object of a second appearance in the local area and a positional relationship between the object of the first appearance and an object of a third appearance in the local area.

Abstract: An image processing unit of the disclosure includes an imaging section that acquires a plurality of partial images as a captured image, by imaging a projection screen provided by a projector through division of the projection screen into a plurality of regions to have partially overlapping imaging regions, and an estimation section that performs an operation a plurality of times on a basis of the captured image, the operation being performed to estimate a projection transformation matrix for linking of the partial images adjacent to each other.

Abstract: The application discloses a display apparatus and an electrical device. The display apparatus including at least a display panel, the display panel having a display zone, and a frame zone in the outer of the display zone; at least a concave lens, the concave lens is set in the boundary of the display zone to diffuse partial of the light emerged from the display zone to the frame zone side; and at least a convex lens, the convex lens crossing the boundary of the display zone and the frame zone, and the other boundary is flush with the boundary of the frame zone and emerge parallel light diffused from the concave lens. When the display apparatus is used in the splice electrical device, the two display apparatus can achieve the seamless splicing display.

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: Seamless display screens that are portable and can be installed in a fast manner, as well as a projection unit for use with several projectors as well as methods of making such display screens. The projection unit can be suitable for being used as a rear projection unit. Devices are provided for reducing depth of the projection unit, to compensate for blend zones and to make it easy to transport such as to be suitable for trade shows, e.g. mirrors or Fresnel lenses.

Abstract: Provided is a display device capable of reducing a bezel space. The display device includes: a display panel; a lower chassis receiving the display panel; and a metal line fixed to one edge of the display panel and the lower chassis.

Abstract: A modular multi-panel display system includes a mechanical support structure and a number of display panels mounted to the mechanical support structure so as to form an integrated display panel. A number of integrated data and power cables electrically the display panels to one another. The display system is cooled passively and includes no air conditioning, fans, or heating units.

Abstract: An automatic calibration method for a projector-camera system including a semi-transparent screen is disclosed herein. An image sequence is caused to be captured from the semi-transparent screen and through the semi-transparent screen while a calibration pattern having features is displayed and not displayed in an alternating succession on the semi-transparent screen. A temporal correlation image is created from the image sequence and a discrete binary signal. Peaks are identified in a spatial cross correlation image generated from the temporal correlation image, where a pattern of the identified peaks corresponds to a pattern of the features in the calibration pattern. The peaks are transformed to coordinates of corrected feature points. A comparison of the corrected feature points and a ground truth set of coordinates for the features is used to determine whether the projector-camera system is calibrated.

Abstract: A projection unit 17 effectively corrects out of focus due to a temperature rise. A mirror holding mechanism of a concave mirror 25 has a mirror holder 41 and a mirror holder base 42. The concave mirror 25 is slidably housed in the mirror holder 41. A focus correction member 57, which expands by heat, is disposed between a back face of the concave mirror 25 and reference plane S formed in the mirror holder. The concave mirror 25 and the focus correction element 57 are urged to the reference plane S by a mirror retainer spring 59.