A display system comprises an image source generating left and right components of a stereoscopic image, a screen adapted to display the left and right image components, a light source emitting parallel light strips, a lenticular panel having parallel lenses for directing light from the light source toward the screen, and a tracking system of a position of a viewer. A controller receives the position of the viewer, in a first timeslot causes the image source to generate the left component of the stereoscopic image while controlling lighting of some light strips directed by the lenticular panel through the screen and toward the left eye of the viewer and, in a second timeslot causes the image source to generate the right component of the stereoscopic image while controlling lighting of other light strips directed by the lenticular panel through the screen and toward the right eye of the viewer.

Provided is a control device including a control unit that calculates a first positional relationship between an eye of an observer observing an object displayed on a display unit and a first point in a master-side three-dimensional coordinate system, and controls an imaging unit that images the object so that a second positional relationship between the imaging unit and a second point corresponding to the first point in a slave-side three-dimensional coordinate system corresponds to the first positional relationship.

Provided is a control device including a control unit that calculates a first positional relationship between an eye of an observer observing an object displayed on a display unit and a first point in a master-side three-dimensional coordinate system, and controls an imaging unit that images the object so that a second positional relationship between the imaging unit and a second point corresponding to the first point in a slave-side three-dimensional coordinate system corresponds to the first positional relationship.

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.

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 binocular see-through AR head-mounted display device is disclosed. Based on that the mapping relationships f.sub.c.fwdarw.s and f.sub.d.fwdarw.i are pre-stored in the head-mounted device, the position of the target object in the camera image is obtained through an image tracking method, and is mapped to the screen coordinate system of the head-mounted device for calculating the left/right image display position. Through a monocular distance finding method, the distance between the target object and the camera is real-time calculated referring to the imaging scale of the camera, so as to calculate a left-right image distance, thereby calculating the right or the right image display position. Correspondingly, the present invention also provides an information display method for a binocular see-through AR head-mounted display device and an augmented reality information display system. The present invention is highly reliable with low cost. The conventional depth of field adjustment is to change an image distance of an optical element. However, the present invention breaks conventional thinking, which calculates the left and the right image display positions for depth of field adjustment without changing a structure of an optical device. The present invention is novel and practical compared to changing an optical focal length.

A method and apparatus for outputting a three-dimensional (3D) image are provided. To output a 3D image, a stereo image is generated based on viewpoints of a user and rendered into a 3D image. Since the stereo image is generated based on the viewpoints of the user, the user views a different side of an object appearing in the 3D image depending on a viewpoint of the user.