A display device includes a display device body. The display device body includes a first lens barrel and a second lens barrel. A first lens is disposed at a first end of the first lens barrel, and a second lens is disposed at a first end of the second lens barrel. A first distance sensor and a second distance sensor are further disposed on the display device body. The second distance sensor is configured to measure a distance between a right eyeball and the second lens. Two distance sensors are disposed on the display device body.

Provided are a three-dimensional (3D) rendering method and apparatus that detect eye coordinates of positions of eyes of a user from an image of the user, adjust the eye coordinates to correspond to virtual eye positions that reduce crosstalk caused by refraction of light; and perform 3D rendering of the eyes based on the adjusted eye coordinates.

Provided are a three-dimensional (3D) rendering method and apparatus that detect eye coordinates of positions of eyes of a user from an image of the user, adjust the eye coordinates to correspond to virtual eye positions that reduce crosstalk caused by refraction of light; and perform 3D rendering of the eyes based on the adjusted eye coordinates.

An apparatus for recognizing a pupillary distance for three-dimensional (3D) display includes a display configured to output a 3D image corresponding to a reference pupillary distance, a controller configured to control a viewing cone included in the 3D image, and a user inputter configured to receive a user feedback indicating whether an artifact is viewed in the 3D image in response to the controlling of the viewing cone. The controller may move the viewing cone within a margin corresponding to the reference pupillary distance, and change the reference pupillary distance or determine the reference pupillary distance to be a desired pupillary distance of the user based on the user feedback.

An apparatus for recognizing a pupillary distance for three-dimensional (3D) display includes a display configured to output a 3D image corresponding to a reference pupillary distance, a controller configured to control a viewing cone included in the 3D image, and a user inputter configured to receive a user feedback indicating whether an artifact is viewed in the 3D image in response to the controlling of the viewing cone. The controller may move the viewing cone within a margin corresponding to the reference pupillary distance, and change the reference pupillary distance or determine the reference pupillary distance to be a desired pupillary distance of the user based on the user feedback.

A head-mounted device (HMD) is configured to perform head tracking, even in low light environments. The HMD includes a stereo camera pair that includes a first camera and a second camera having overlapping fields of view. Both cameras are mounted on the HMD and are configured to detect both visible light and infrared (IR) light. The HMD also includes a flood IR light illuminator that is configured to emit a flood of IR light that spans an illumination area that overlaps with the cameras' fields of view. The intensity of the IR light is sometimes modified to accommodate low light environmental conditions. The cameras obtain images of reflected IR light. These images are then used to track movements of the HMD, even in low light environments.

A head-mounted device (HMD) is configured to perform head tracking, even in low light environments. The HMD includes a stereo camera pair that includes a first camera and a second camera having overlapping fields of view. Both cameras are mounted on the HMD and are configured to detect both visible light and infrared (IR) light. The HMD also includes a flood IR light illuminator that is configured to emit a flood of IR light that spans an illumination area that overlaps with the cameras' fields of view. The intensity of the IR light is sometimes modified to accommodate low light environmental conditions. The cameras obtain images of reflected IR light. These images are then used to track movements of the HMD, even in low light environments.

The invention relates to methods, apparatuses, systems and computer program products for coding volumetric video. A first texture picture coded, said first texture picture comprising a first projection of first volumetric texture data of a first source volume of a scene model and a second projection of second volumetric texture data of said first source volume of said scene model, said first projection being from said first source volume to a first projection surface, and said second projection being from said first source volume to a second projection surface, said second volumetric texture data having been obtained by removing at least a part of said first volumetric texture data that has been successfully projected in said first projection. A a first geometry picture is coded, said geometry picture representing a mapping of said first projection surface to said first source volume and a mapping of said second projection surface to said first source volume. Projection geometry information of said first and second projections is coded, said projection geometry information comprising information of position of said first and second projection surfaces in said scene model.

A head-mounted display (HMD) system may include a HMD with a housing and a pair of display panels, mounted within the housing, that are counterrotated in orientation. A compositor of the HMD system may also be configured to provide camera pose data with counterrotated camera orientations to an executing application (e.g., a video game application), and to resample the frames received from the application, with or without rotational adjustments in the clockwise and counterclockwise directions depending on whether the display panels of the HMD are upright-oriented or counterrotated in orientation. A combined approach may use the counterrotated camera orientations in combination with counterrotated display panels to provide a HMD with optimized display performance.

A head-mounted display (HMD) system may include a HMD with a housing and a pair of display panels, mounted within the housing, that are counterrotated in orientation. A compositor of the HMD system may also be configured to provide camera pose data with counterrotated camera orientations to an executing application (e.g., a video game application), and to resample the frames received from the application, with or without rotational adjustments in the clockwise and counterclockwise directions depending on whether the display panels of the HMD are upright-oriented or counterrotated in orientation. A combined approach may use the counterrotated camera orientations in combination with counterrotated display panels to provide a HMD with optimized display performance.