The present disclosure relates to the field of 3D images, and discloses a display control method for a multi-viewpoint 3D display screen, comprising: acquiring identity features of a user; and performing 3D display for the user when the identity features meet conditions. The method can conduct authentication about 3D display for the user, thereby solving a problem of a single 3D display mode, and improving flexibility of 3D display mode. The present disclosure further discloses a multi-viewpoint 3D display device, a computer-readable storage medium, and a computer program product.

The present disclosure relates to the field of 3D images, and discloses a display control method for a multi-viewpoint 3D display screen, comprising: acquiring identity features of a user; and performing 3D display for the user when the identity features meet conditions. The method can conduct authentication about 3D display for the user, thereby solving a problem of a single 3D display mode, and improving flexibility of 3D display mode. The present disclosure further discloses a multi-viewpoint 3D display device, a computer-readable storage medium, and a computer program product.

It is an objective of the invention of the present application to provide an image display apparatus capable of reducing a change in a display state of a virtual image that depends on a change in a viewpoint position. An image display apparatus according to an embodiment of the present technology includes an emission unit, a diffractive optical element, and an emission control unit. The emission unit emits image light of a target image. The diffractive optical element includes an incident surface and an emission surface, diffracts the image light entering the incident surface, emits the image light from the emission surface, and displays a virtual image that is the target image. The emission control unit controls emission of the image light by the emission unit by using image data generated in accordance with a change in a display state of the virtual image that depends on a change in a viewpoint position.

It is an objective of the invention of the present application to provide an image display apparatus capable of reducing a change in a display state of a virtual image that depends on a change in a viewpoint position. An image display apparatus according to an embodiment of the present technology includes an emission unit, a diffractive optical element, and an emission control unit. The emission unit emits image light of a target image. The diffractive optical element includes an incident surface and an emission surface, diffracts the image light entering the incident surface, emits the image light from the emission surface, and displays a virtual image that is the target image. The emission control unit controls emission of the image light by the emission unit by using image data generated in accordance with a change in a display state of the virtual image that depends on a change in a viewpoint position.

The invention relates to a household appliance (100), in particular a kitchen appliance (100) for preparing food, comprising a processing device (110) for at least partially automatically carrying out a household activity, in particular for processing ingredients, wherein the processing device (110) is controlled by a control unit (102). Further, the household appliance (100) comprises a position device (120) for detecting position information (200) of a user (1) operating the household appliance (100), the position information (200) being transmitted to the control unit (102). Furthermore, the household appliance (100) has a display (130) which is adapted to reproduce image information (140) determined by the control unit (102), wherein the image information (140) reproduced by the display (130) generates an impression of depth at the user (1) and is dependent on at least the position information (200) of the user (1). Furthermore, the invention relates to a method for operating a household appliance (100).

The invention relates to a household appliance (100), in particular a kitchen appliance (100) for preparing food, comprising a processing device (110) for at least partially automatically carrying out a household activity, in particular for processing ingredients, wherein the processing device (110) is controlled by a control unit (102). Further, the household appliance (100) comprises a position device (120) for detecting position information (200) of a user (1) operating the household appliance (100), the position information (200) being transmitted to the control unit (102). Furthermore, the household appliance (100) has a display (130) which is adapted to reproduce image information (140) determined by the control unit (102), wherein the image information (140) reproduced by the display (130) generates an impression of depth at the user (1) and is dependent on at least the position information (200) of the user (1). Furthermore, the invention relates to a method for operating a household appliance (100).

A 3D display control system and method are provided. The system includes: a display module, including a plurality of pixel units; an eye position detection device, configured to detect first position moving information and second position moving information; and a lens plate, located at a light emergent side of the display module, and configured to generate a plurality of first lens equivalent units and a plurality of second lens equivalent units, wherein at least one pixel unit directly below each first lens equivalent unit forms a first pixel unit group, and each first lens equivalent unit is configured to redirect light from the first pixel unit group directly therebelow toward a first position.

Art exhibition device and a video picture exhibition method which are capable of providing renditions by a spatial image and a projected image, in combination are provided. The exhibition device includes a display portion configured to image-form a spatial image; and a projector configured to project a video picture onto an object. The video picture exhibit ion method using the exhibition device provides a video picture related to the spatial image projected from the projector disposed in a position hang over the display portion toward an upper surface of the display portion. The display portion is configured to image-form a video picture displayed on a display surface of a display disposed in an attitude inclined under a micromirror array through the micromirror array disposed in light-transmissive fashion as a spatial two-dimensional video picture standing up obliquely in a spatial position lying over the micromirror array.

A system for executing a three-dimensional (3D) intraoperative scan of a patient is disclosed. A 3D scanner controller projects the object points included onto a first image plane and the object points onto a second image plane. The 3D scanner controller determines first epipolar lines associated with the first image plane and second epipolar lines associated with the second image plane based on an epipolar plane that triangulates the object points included in the first 2D intraoperative image to the object points included in the second 2D intraoperative image. Each epipolar lines provides a depth of each object as projected onto the first image plane and the second image plane. The 3D scanner controller converts the first 2D intraoperative image and the second 2D intraoperative image to the 3D intraoperative scan of the patient based on the depth of each object point provided by each corresponding epipolar line.

An eye positioning apparatus is provided, comprising: an eye positioner, comprising a first black-and-white camera configured to shoot first black-and-white images and a second black-and-white camera configured to shoot second black-and-white images; and an eye positioning image processor, configured to identify presence of eyes based on at least one of the first black-and-white images and the second black-and-white images and determine eye space positions based on the eyes identified in the first black-and-white images and the second black-and-white images. The apparatus can determine the eye space positions of a user at high accuracy, thereby improving 3D display quality. An eye positioning method, a 3D display device and method, a computer-readable storage medium, and a computer program product are also provided.