Methods and devices for manipulating an image are described. The method comprises receiving image data, the image data including a first image obtained from a first camera and a second image obtained from a second camera, the first camera and the second camera being oriented in a common direction; identifying one or more boundaries of an object in the image data by analyzing the first image and the second image; and displaying a manipulated image based on the image data, wherein the manipulated image includes manipulation of at least a portion of the first image based on boundaries of the object.

The disclosure presents novel methods and apparatuses to add new imaging functions to an existing smart device, comprising a plate accessory with one or more optical components that is attached to the smart device. The plate can be rotated to the front of the screen and supported at more than one sides of the smart device. The imaging function added could be a virtual reality viewer or a wide light field camera. The plate can also be worn on one's head by self-contained retractable brace, stands and strap. If the plate is moved close to the smart device's cameras, the optical components can form multiple images from multiple viewing angles of the scene onto the camera sensor. The captured images can be used to generate stereoscopic 3D or light field 4D recording of the scene by computational photographic algorithms. The attaching accessory is very light, portable, flexible, affordable and easy to use. Compared to the competitive methods, the present disclosure is a smallest wearable virtual reality smartphone case viewer that can be carried in pockets, and a method and apparatus to enable existing traditional phone cameras to capture light field 4D images and videos.

A method for displaying virtual content to a user, the method includes determining an accommodation of the user's eyes. The method also includes delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation. The method further includes delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.

A method for displaying virtual content to a user, the method includes determining an accommodation of the user's eyes. The method also includes delivering, through a first waveguide of a stack of waveguides, light rays having a first wavefront curvature based at least in part on the determined accommodation, wherein the first wavefront curvature corresponds to a focal distance of the determined accommodation. The method further includes delivering, through a second waveguide of the stack of waveguides, light rays having a second wavefront curvature, the second wavefront curvature associated with a predetermined margin of the focal distance of the determined accommodation.

A system and a process configuration generates a unitary rendered image for a video from at least two cameras. The configuration detects a communication coupling of at least two cameras and determines a master camera and a slave camera. The configuration determines an orientation of camera sensor of the master camera and the slave camera and determines a first frame of a video for a synchronization point for a start of a video capture. The configuration captures and reads images from the master camera sensor and the slave camera sensor in response to the start of the video capture and orientation of the camera sensors.

A system and a process configuration generates a unitary rendered image for a video from at least two cameras. The configuration detects a communication coupling of at least two cameras and determines a master camera and a slave camera. The configuration determines an orientation of camera sensor of the master camera and the slave camera and determines a first frame of a video for a synchronization point for a start of a video capture. The configuration captures and reads images from the master camera sensor and the slave camera sensor in response to the start of the video capture and orientation of the camera sensors.

Methods and devices for selecting objects in images are described. In one example aspect, a method includes: receiving stereoscopic image data, the stereoscopic image data includes a first image obtained from a first camera and a second image obtained from a second camera; identifying an object in the first image by analyzing the first image and the second image; displaying the first image, the identified object in the first image being selectable.

Methods and devices for selecting objects in images are described. In one example aspect, a method includes: receiving stereoscopic image data, the stereoscopic image data includes a first image obtained from a first camera and a second image obtained from a second camera; identifying an object in the first image by analyzing the first image and the second image; displaying the first image, the identified object in the first image being selectable.

A three-dimensional display system is provided. The three-dimensional display system includes: a projection body having a three-dimensional shape and a transflective property; an optical reflector including at least one reflection surface; a first driving structure for driving the projection body or the optical reflector to rotate, so that the projection body and the optical reflector rotate relative to each other; an image processor for decomposing a three-dimensional image of an object to obtain multiple two-dimensional images at different cross-sections of the three-dimensional image, and sending the two-dimensional images to at least one projector configured to project the two-dimensional images onto one of the at least one reflection surface in sequence at a regular interval, and reflect the two-dimensional images to different positions on the projection body by means of the at least one reflection surface, to form the three-dimensional image.

A three-dimensional display system is provided. The three-dimensional display system includes: a projection body having a three-dimensional shape and a transflective property; an optical reflector including at least one reflection surface; a first driving structure for driving the projection body or the optical reflector to rotate, so that the projection body and the optical reflector rotate relative to each other; an image processor for decomposing a three-dimensional image of an object to obtain multiple two-dimensional images at different cross-sections of the three-dimensional image, and sending the two-dimensional images to at least one projector configured to project the two-dimensional images onto one of the at least one reflection surface in sequence at a regular interval, and reflect the two-dimensional images to different positions on the projection body by means of the at least one reflection surface, to form the three-dimensional image.