One form of a display device of the present disclosure includes a first optical structure and a second optical structure stacked on the first optical structure. The first optical structure includes a light source, a light guide layer, a reflection layer, and a half mirror, and a light diffusion surface for generating a design of a multiple image that is formed on a bottom portion of the light guide layer. The second optical structure includes a light source, a light guide layer, a retroreflective layer, and a half mirror, and a light diffusion surface for generating a design of the aerial image is formed on a bottom portion of the light guide layer. The aerial image and the multiple image are simultaneously observed from the viewpoint of the user, and a sense of depth or a stereoscopic effect can be imparted to the aerial image.

A hand-held turbine cleaning tool includes front and rear housings coupled to each other, an outlet at one end of the tool, and a top of the tool at an opposed end. The outlet is directed in a first direction away from the top. An inlet is disposed between the outlet and the top and is also directed in the first direction. A diverter valve at the inlet is moveable between on and off positions. The on position directs water flowing into the inlet from the inlet, up to the top in a second direction opposite the first direction, and then down to the outlet in the first direction. A turbine at the top has a turbine shaft that extends outside the tool. An abrasive member is connected to the turbine shaft and is configured to rotate when water flows from the inlet to the outlet.

A hand-held turbine cleaning tool includes front and rear housings coupled to each other, an outlet at one end of the tool, and a top of the tool at an opposed end. The outlet is directed in a first direction away from the top. An inlet is disposed between the outlet and the top and is also directed in the first direction. A diverter valve at the inlet is moveable between on and off positions. The on position directs water flowing into the inlet from the inlet, up to the top in a second direction opposite the first direction, and then down to the outlet in the first direction. A turbine at the top has a turbine shaft that extends outside the tool. An abrasive member is connected to the turbine shaft and is configured to rotate when water flows from the inlet to the outlet.

Methods and apparatus for processing of volumetric visual data are described. One example method includes decoding, by a decoder, a bitstream containing volumetric visual information for a 3-dimensional scene that is represented as one or more atlas sub-bitstreams and one or more encoded video sub-bitstreams, reconstructing, using a result of decoding the one or more atlas sub-bitstreams and a result of decoding the one or more encoded video sub-bitstreams, the 3-dimensional scene, and rendering a target view of the 3-dimensional scene based on a desired viewing position and/or a desired viewing orientation.

According to one embodiment, a stereoscopic image display device includes a three-dimensional pixel unit, a backlight, and an arithmetic/control circuit. The three-dimensional pixel unit includes a plurality of pixel cells that are formed of an optical material having electrically changeable optical characteristics, are arranged in a mutually separated manner and in a three-dimensional manner, and are electrically connected with transparent wiring patterns. The backlight is configured to emit illumination light to the three-dimensional pixel unit. The arithmetic/control circuit is configured to control the plurality of pixel cells individually via the wiring patterns on the basis of input three-dimensional image data to cause the three-dimensional pixel unit to function as a transmissive hologram.

Reducing data used during capture in a physical capture volume by selectively activating image capture devices from a virtual view, including: setting up a virtual camera to receive information about and visualize the physical capture volume and a plurality of image capture devices in the virtual view; providing, to the virtual camera, the virtual view of the physical capture volume with a capability to move around the physical capture volume and activate or deactivate each of the plurality of image capture devices; calculating a view frustum, wherein the view frustum is a region of 3-D space within the physical capture volume that would appear on a view screen of the virtual camera; and defining the view frustum of the virtual camera which intersects with the plurality of image capture devices defined in the virtual view.

Reducing data used during capture in a physical capture volume by selectively activating image capture devices from a virtual view, including: setting up a virtual camera to receive information about and visualize the physical capture volume and a plurality of image capture devices in the virtual view; providing, to the virtual camera, the virtual view of the physical capture volume with a capability to move around the physical capture volume and activate or deactivate each of the plurality of image capture devices; calculating a view frustum, wherein the view frustum is a region of 3-D space within the physical capture volume that would appear on a view screen of the virtual camera; and defining the view frustum of the virtual camera which intersects with the plurality of image capture devices defined in the virtual view.

In one embodiment, an electronic display assembly includes a sensor array located on one side of a circuit board and an electronic display array located on an opposite side of the circuit board from the sensor array. The sensor array includes a plurality of sensor pixel units. Each sensor pixel unit includes a plurality of sensor pixels. The electronic display array includes a plurality of display pixel units. Each display pixel unit includes a plurality of display pixels. Each particular one of the plurality of sensor pixel units is mapped to a corresponding one of the plurality of display pixel units such that display pixels of each particular one of the plurality of display pixel units display light corresponding to light captured by sensor pixels of its mapped sensor pixel unit.

In one embodiment, an electronic display assembly includes a sensor array located on one side of a circuit board and an electronic display array located on an opposite side of the circuit board from the sensor array. The sensor array includes a plurality of sensor pixel units. Each sensor pixel unit includes a plurality of sensor pixels. The electronic display array includes a plurality of display pixel units. Each display pixel unit includes a plurality of display pixels. Each particular one of the plurality of sensor pixel units is mapped to a corresponding one of the plurality of display pixel units such that display pixels of each particular one of the plurality of display pixel units display light corresponding to light captured by sensor pixels of its mapped sensor pixel unit.

A lensed display system includes a projector configured to project an image. The lensed display system includes a lens formed of a glass or crystalline material. The lens includes a first surface, wherein at least a portion of the first surface includes a coating that is configured to display the projected image. The lens includes a second surface, wherein the second surface comprises a transparent curved surface that is configured to face toward a user and to enable the user to view the image projected onto the coating through the transparent curved surface.