Abstract: A relative location of each eye of user(s) with respect to an optical combiner is determined. A position and an orientation of a first region of a light-emitting component of a light field display unit is determined. A first region of a given light field image (LFI) is generated, wherein the first region of the light-emitting component displays the first region of the given LFI. A second region of the given LFI is generated, wherein the second region of the light-emitting component displays the second region of the given LFI. When the given LFI is displayed, wherein a first part of a synthetic light field corresponding to the first region of the given LFI is directed towards the user(s), whilst a second part of the synthetic light field corresponding to the second region of the given LFI is directed towards the optical combiner.

Abstract: A defective sub-region of a display area of a multiscopic display is identified based on a comparison between an actual captured image of the display area and an expected image of the display area that is expected to be captured during display of a first multiscopic image. When it is determined that the defective sub-region overlaps at least partially with a sub-region of the display area to be used to present a virtual object, another sub-region of the display area that does not overlap with the defective sub-region is identified. The virtual object is relocated within a second multiscopic image to use the another sub-region for presenting the virtual object. The second multiscopic image is then displayed after the relocation of the virtual object.

Abstract: An augmented reality system includes a tracker, a transparent display arranged on an optical path of a real-world light field from a real-world environment, at least one real-world facing camera, and at least one processor. The processor is configured to determine a relative position of each eye of at least one user with respect to the transparent display using the tracker, generate or retrieve an image to be displayed based on the determined positions, and determine a corresponding portion of the transparent display from which light rays of a given graphical element are to be directed toward a given eye. The processor is further configured to capture at least one real-world image, determine a colour and luminance of a portion of the real-world light field, calculate colour and luminance differences, adjust at least one graphical parameter based on the differences, and display the image via the transparent display.

Abstract: A relative location of each eye of user(s) is determined with respect to an image plane of a three-dimensional (3D) heads-up display (HUD), and a relative location of a head or each eye of the user(s) is determined with respect to an image plane of a non-transparent display, by utilising tracking means. A first light field image to be displayed via the 3D HUD is generated for producing a part of a synthetic light field. An image to be displayed via the non-transparent display is generated for producing another part of the synthetic light field. The first light field image and the image are simultaneously displayed via the 3D HUD and the non-transparent display, respectively, to produce the synthetic light field.

Abstract: For a given region of a liquid crystal display (LCD) device and a given viewing direction, colour values of an imaginary light ray that originates from at least one virtual object along the given viewing direction and that is to be presented by the given region of the LCD device are determined. This LCD device includes a backlight unit that is configured to produce collimated light rays. A drive signal is generated and sent to control the given region of the LCD device to emit light rays having the colour values of the imaginary light ray. A corresponding portion of an active optical element arranged on an optical path of the backlight unit is controlled, to direct the light rays along the given viewing direction. The aforesaid steps are repeated for respective ones of different viewing directions, by employing temporal multiplexing.

Abstract: A liquid crystal display (LCD) device includes a backlight unit configured to produce collimated light. A relative location of a head or eyes of at least one user with respect to an image plane of the LCD device is determined. A plurality of images are displayed via the LCD device, to sequentially produce sets of collimated light beams. An active optical element, arranged on an optical path of the LCD device, is controlled based on a relative location of a head or a given eye of an individual one of the at least one user with respect to the image plane of the LCD device, to direct a respective one of the sets of collimated light beams towards the head or the given eye of the individual one of the at least one user.

Abstract: A system for improving visibility in low-visibility conditions, being implemented in vehicle, including visible-light camera(s); depth camera(s); display unit; optical combiner; and processor(s). Processor configured to: obtain information indicative of relative position of head or eyes of user(s); control visible-light and depth camera(s) to capture, contemporaneously, visible-light and depth images, of region of real-world environment in front of vehicle. For given visible-light image (GVLI), processor identifies in corresponding depth image, image segment(s) that represents object(s) present in region of real-world environment. Processor identifies corresponding image segment(s) in GVLI whose visual information is any one of: occluded, degraded; and generates image by digitally superimposing virtual element(s) on corresponding image segment(s) of GVLI; and displays image via display unit to produce synthetic light field (SLF), optical combiner reflects SLF towards eyes of user(s).

Abstract: An apparatus for controlling temperature of backlight unit of display system includes: hollow heat transfer element arranged between optical element(s) of backlight unit and printed circuit board of backlight unit when apparatus is in use, wherein a first heat transfer fluid circulates within hollow space of hollow heat transfer element when apparatus is in use, to thermally couple hollow heat transfer element with at least one of: light-emitting elements arranged on printed circuit board, printed circuit board; and heat exchanger thermally coupled to hollow heat transfer element when apparatus is in use, wherein heat exchanger controls temperature of backlight unit to lie within a predefined operating temperature range, by exchange of thermal energy between heat exchanger and hollow heat transfer element via first heat transfer fluid.

Abstract: A system includes a windshield and processor(s). The windshield has a first substrate and a second substrate that are optically transparent, and a liquid crystal (LC) layer encased between the first substrate and the second substrate. A surface of at least one of: the first substrate and the second substrate that is in contact with the LC layer has at least one optical feature that pertains to at least one optical property. The at least one optical property includes at least one of: optical power, diffraction, refraction, transmittance, reflectance, polarization. The processor(s) are configured to selectively adjust a refractive index of an LC material in at least a given portion of the LC layer, to modulate the at least one optical property in a corresponding portion of the windshield.

Abstract: When a relative position of a given eye with respect to an optical combiner changes by more than a predefined threshold at least a predefined number of times over a predefined time period, then for a subsequent time period, a three-dimensional (3D) view frustum corresponding to the given eye is updated, in response to the changes in the relative position of the given eye. A spatial anchor is maintained at a predefined position within the 3D view frustum. Corresponding positions for a graphical element are determined in images to be presented to the given eye, based on the predefined position of the spatial anchor within the 3D view frustum. The images are generated for presenting the graphical element to the given eye, positioning the graphical element at the corresponding positions.

Abstract: A system implemented in a vehicle. The system includes: a heads-up display (HUD); temperature sensors corresponding to regions of the HUD; a temperature controlling unit; and processor(s) configured to: determine, using the temperature sensors, temperatures of the regions; detect when the temperatures lie outside a predefined operating temperature range of the HUD; and when it is detected that the temperatures lie outside the predefined operating temperature range, determine a priority order, based on at least one of: the temperatures of the regions, an importance level that is pre-assigned to given virtual content that is to be presented via a given region of the HUD; and control the temperatures according to the priority order, by using the temperature controlling unit, to bring the temperatures within the predefined operating temperature range.

Abstract: Rear-view image(s) of a region of a surrounding environment that is behind a vehicle, is/are captured, by utilising rear-view camera(s). An image to be displayed via the heads-up display, is generated, wherein when generating the image, processor(s) is/are configured to generate an image segment of the image by utilising the rear-view image(s) of said region of the surrounding environment. The image is displayed via the heads-up display for producing a synthetic light field augmenting a real-world light field incoming via a windshield of the vehicle.

Abstract: An optical location of each eye of user(s) relative to a display area of a multiscopic display is determined using a tracker. An optical location of camera(s) relative to the display area is determined or retrieved. An initial estimated value of parameter(s) of a multiscopic optical element of the multiscopic display is selected. A multiscopic image to be displayed via the multiscopic display, is generated, based on the initial estimated value of the parameter(s) and the optical location of each eye of the user(s). The multiscopic image is displayed via the multiscopic display, whilst image(s) of the display area is/are captured using the camera(s). A refined estimated value of the parameter(s), is determined, based on the captured image(s), the multiscopic image, the initial estimated value of the parameter(s), and the optical location of the camera(s).

Abstract: A system including: a multiscopic display; camera(s) that is/are positioned such that a display area of the multiscopic display lies at least partially within a field of view of the camera(s); and processor(s) configured to: display an image via the multiscopic display, whilst capturing image(s) of the display area using the camera(s); rectify the captured image(s) of the display area, to represent the display area only; generate a frequency-domain representation of the displayed image and a frequency-domain representation of the captured image(s) of the display area after rectifying; and determine a correct value of parameter(s) of a multiscopic optical element of the multiscopic display, based on the frequency-domain representation of the displayed image and the frequency-domain representation of the captured image(s) of the display area.

Abstract: A system includes a tracker, a display, an optical combiner, at least one camera, and at least one processor. The optical combiner is arranged on an optical path of the display and on an optical path of a real-world light field of a real-world environment, and includes a semi-reflective surface. The camera is arranged facing the semi-reflective surface. The at least one processor is configured to determine relative positions of eyes of at least one user with respect to the semi-reflective surface, generate or retrieve an image, determine a portion of the semi-reflective surface from which light rays of a graphical element identified as important are to be reflected toward a given eye, detect when a luminance of a portion of the real-world light field exceeds a threshold luminance, identify a non-occupied region of the image, modify the image to reposition the graphical element, and display the image.

Abstract: Light field images are displayed via a light field display unit to produce a synthetic light field presenting at least one virtual object to a given user. When it is detected that a difference between a focus depth at which the given user is gazing and a given optical depth at which the at least one virtual object is being presented is more than a predefined threshold difference, at least one of: dimming, blurring, is performed on a virtual image to be presented to a non-dominant eye of the given user. A current light field image is generated by utilising this virtual image and another virtual image to be presented to a dominant eye. The current light field image is displayed via the light field display unit to produce a current synthetic light field presenting the at least one virtual object.

Abstract: A set of images of a user are captured during a given time period, by employing at least one tracking camera. In each image, at least one face landmark feature of a face of the user is detected, and a position of the at least one face landmark feature is determined. When it is detected in a given image that the user is wearing at least one head accessory, a pose of the at least one head accessory in the given image is determined. A pose of a head of the user in the given image is then determined, based on the position of the at least one face landmark feature detected in the given image and the pose of the at least one head accessory in the given image.

Abstract: A first image and a second image to be directed toward a first eye and a second eye, respectively, are generated or retrieved. For a given first segment of the first image presenting at least a part of a virtual object, an amount of crosstalk toward the first eye is determined based on at least the second image. A given second segment of the second image that also presents at least said part of the virtual object is determined. Intensity values of pixels in the given second segment of the second image are adjusted, based on the amount of crosstalk determined for the given first segment of the first image. An autostereoscopic image is then generated using the first image and the second image, and displayed via an autostereoscopic display.

Abstract: At least one monocular camera is installed in a vehicle in addition to in-cabin camera(s). Images captured by the in-cabin camera(s) at a first frame rate are processed to determine first positions of facial landmark features of a user and first poses of the user's face. Images captured by the at least one monocular camera at a second frame rate, higher than the first frame rate, are processed to identify facial landmark features of the user in the second images. Second positions of the facial landmark features are determined at the second frame rate, by correlating the facial landmark features identified in the second images with the first positions of the facial landmark features determined from the first images. Second poses of the user's face are determined at the second frame rate based on the second positions of the facial landmark features and the first poses of the user's face.

Abstract: A multiscopic display includes an array of light-emitting cells and a multiscopic optical element including a plurality of multiscopic cells. For a given multiscopic cell, distinct sets of light-emitting cells whose emitted light is directed toward respective eyes of at least one user are identified, and at least one additional set of light-emitting cells that does not emit light directed toward any of the eyes, is separated by a distance smaller than a first predefined threshold from a single distinct set of light-emitting cells, and is separated by a distance greater than a second predefined threshold from other distinct sets of light-emitting cells is determined. Pixel values are retrieved corresponding to the distinct sets and the at least one additional set from images to be presented to the respective eyes, and are used to generate an output image for display via the multiscopic display.