Example systems and methods perform streaming of volumetric media and accommodate high user interactivity. A device is configured to access and render streaming holograms and may implement a window as a buffer. In addition, a hologram streaming machine can be configured to stream full or partial holograms in the form of 3D blocks, where different 3D blocks represent a same portion of hologram but may have different resolutions depending on where the user is positioned and looking relative to each 3D block, thus saving network capacity by focusing on what the user is looking at. Since many 3D blocks may be empty much of the time, may be occluded or far away from the user's viewing position, or may be numerous within a 3D space, the device can be configured to request 3D blocks based on their utility, which may be calculated based on bitrate, visibility, or distance.

There is provided a lighting system for a vehicle. The lighting system comprises a holographic projector and a light distribution system. The holographic projector comprises a hologram engine and a spatial light modulator. The hologram engine is arranged to output holograms. The spatial light modulator is arranged to display each hologram and spatially-modulate light in accordance with each hologram. The spatially-modulated light forms a holographic reconstruction, corresponding to each hologram, on a replay plane. The light distribution system comprises a plurality of optical fibres. Each optical fibre comprises an input optically-coupled to respective sub-area of the replay plane and an output optically coupled with an illumination sub-system of the vehicle.

A method for processing a sequence of holographic images with a view to playing the images back on a holographic display device to at least one viewer. A subset of wavelet coefficients relevant for the reconstruction of a sub-hologram visible for the at least one viewer from at least one viewing point is selected from a decomposition of at least one holographic image on a wavelet basis and information representative of a location of the at least one viewer in a repository of the display device. In the method, decomposition of the at least one holographic image is carried out on a Shannon wavelet basis.

There is provided a holographic image generation system comprising: a spatial light modulator (SLM) having pixels; a light source configured to illuminate the SLM; a temporal modulator; a light sensor associated with the SLM; and a demodulator. The temporal light modulator is arranged to modulate an output intensity of the light source over time to encode holographic data representing a hologram. The light sensor is configured to receive light from the light source and generate a signal representative of the output intensity of the light source. The demodulator is connected to the light sensor to receive the signal, and is arranged to decode the signal to obtain the holographic data. The demodulator is further connected to the SLM to set the pixels of the SLM in accordance with the holographic data to display the hologram ready for illumination by the light source to form a holographic reconstruction.

Methods and systems (terminals, devices) for the generation, the retrieval and the display of computer-generated holographic images through a head-mounted display. The holographic images may be used as virtual retrievable tags for display in augmented reality.

A volumetric display system including a volumetric display for displaying a scene viewable as a three-dimensional floating-in-the-air scene in a display space, enabling a user to reach a first object into the display space, a location determination unit locating real objects in the display space, providing a location of the first object when the first object is inserted into the display space, and a computer for receiving the location of the first object, detecting when the location of the first object is at a location where an object is displayed in the three-dimensional scene, thereby determining that the first object is viewable as touching the displayed object following a detection of the first object viewable as touching the displayed object, producing a new three-dimensional scene displaying the displayed object as if manipulated by the first object. Related apparatus and methods are also described.

Disclosed are methods and systems for displaying images, and for implementing volumetric user interfaces. One exemplary embodiment provides a system comprising: a light source; an image producing unit, which produces an image upon interaction with light approaching the image producing unit from the light source; an eyepiece; and a mirror, directing light from the image to a surface of the eyepiece, wherein the surface has a shape of a solid of revolution formed by revolving a planar curve at least 180 around an axis of revolution.

Disclosed are a method and a system for image processing and data transmission in a network-based multi-camera environment. The inventive concept provides a real-time high-efficiency 3D/hologram image service to the user through an in-network computing technology. In detail, the inventive concept minimizes loss of a quality of a final 3D/hologram image while reducing an amount of information that is to be transmitted through processing of a plurality of cameras by allowing information captured by the cameras to be efficiently processed and transmitted when the cameras cooperate with each other to produce a 3D/hologram image.

A computing device and method are provided for transmitting a relevant subset of map data, called a neighborhood, to enable mutual spatial understanding by multiple display devices around a target virtual location to display a shared hologram in the same exact location in the physical environment at the same moment in time. The computing device may comprise a processor, a memory operatively coupled to the processor, and an anchor transfer program stored in the memory and executed by the processor.

Embodiments of the present application disclose a sharing method and a sharing device. The method comprises: determining at least one piece of first information associated with a field of view of at least one user; and determining a transmission policy of at least one hologram of the at least one user at least according to the at least one piece of first information, wherein the transmission policy comprises: a sequence that is determined, for any one of the at least one user, at least according to a degree of association between a field of view of at least one other user among the at least one user and a field of view of the any user and is for transmitting at least one hologram of the any user to the at least one other user.