公开(公告)号：US10594945B2

公开(公告)日：2020-03-17

申请号：US15944551

申请日：2018-04-03

Applicant: Google LLC

Inventor： Zejing Wang ,  Joel Merritt

IPC: H04N5/232 ,  H04N5/262 ,  G06T3/40 ,  G06T5/50 ,  H04N5/225

Abstract: A sensor is configured to acquire a light field by imaging a scene. A processor is configured to determine four-dimensional (4D) coordinates of points in a light field and generate dollied coordinates from the 4D coordinates based on a dolly transform and a dolly parameter. The processor is also configured to project rays associated with the dollied coordinates from the light field onto corresponding points in an output raster. In some cases, the processor applies an aperture function to filter the rays in the coordinate system of the dollied coordinates. The aperture function has a first value in a first region of an aperture plane and the aperture value has a second value in a second region of the aperture plane. Rays passing through the first region are accepted by the aperture function and rays passing through the second region are rejected.

公开(公告)号：US10354399B2

公开(公告)日：2019-07-16

申请号：US15605037

申请日：2017-05-25

Applicant: GOOGLE LLC

Inventor： Zejing Wang ,  Thomas Nonn

IPC: G06T7/557 ,  H04N13/218 ,  H04N13/00

Abstract: Dense light-field data can be generated from image data that does not include light-field data, or from image data that includes sparse light-field data. In at least one embodiment, the source light-field data may include one or more sub-aperture images that may be used to reconstruct the light-field in denser form. In other embodiments, the source data can take other forms. Examples include data derived from or ancillary to a set of sub-aperture images, synthetic data, or captured image data that does not include full light-field data. Interpolation, back-projection, and/or other techniques are used in connection with source sub-aperture images or their equivalents, to generate dense light-field data.