公开(公告)号：US10341632B2

公开(公告)日：2019-07-02

申请号：US15590877

申请日：2017-05-09

Applicant: Google LLC.

Inventor： Derek Pang ,  Colvin Pitts ,  Kurt Akeley

IPC: G06F3/00 ,  G06F3/01 ,  G06F3/03 ,  H04N5/222 ,  H04N5/225 ,  H04N5/247 ,  H04N13/117 ,  H04N13/156 ,  H04N13/161 ,  H04N13/194 ,  H04N13/232 ,  H04N13/243 ,  H04N13/275 ,  H04N13/282 ,  H04N13/344

Abstract: An environment may be displayed from a viewpoint. According to one method, volumetric video data may be acquired depicting the environment, for example, using a tiled camera array. A plurality of vantages may be distributed throughout a viewing volume from which the environment is to be viewed. The volumetric video data may be used to generate video data for each vantage, representing the view of the environment from that vantage. User input may be received designating a viewpoint within the viewing volume. From among the plurality of vantages, a subset nearest to the viewpoint may be identified. The video data from the subset may be retrieved and combined to generate viewpoint video data depicting the environment from the viewpoint. The viewpoint video data may be displayed for the viewer to display a view of the environment from the viewpoint selected by the user.

公开(公告)号：US10546424B2

公开(公告)日：2020-01-28

申请号：US15729918

申请日：2017-10-11

Applicant: GOOGLE LLC

Inventor： Derek Pang ,  Colvin Pitts ,  Kurt Akeley

IPC: G06T19/00 ,  G06F3/01 ,  H04N13/117 ,  H04N13/139

Abstract: A virtual reality or augmented reality experience of a scene may be presented to a viewer using layered data retrieval and/or processing. A first layer of a video stream may be retrieved, and a first viewer position and/or orientation may be received. The first layer may be processed to generate first viewpoint video of the scene from a first virtual viewpoint corresponding to the first viewer position and/or orientation. The first viewpoint video may be displayed for the viewer. Then, a second layer of the video stream may be retrieved, and a second viewer position and/or orientation may be received. The second layer may be processed to generate second viewpoint video of the scene from a second virtual viewpoint corresponding to the second viewer position and/or orientation, with higher quality than the first viewpoint video. The second viewpoint video may be displayed for the viewer.

公开(公告)号：US10419737B2

公开(公告)日：2019-09-17

申请号：US15706343

申请日：2017-09-15

Applicant: GOOGLE LLC

Inventor： Derek Pang ,  Colvin Pitts ,  Kurt Akeley

IPC: H04N13/117 ,  H04N13/156 ,  H04N13/161 ,  H04N13/243 ,  H04N13/282 ,  H04N13/344 ,  H04N5/222 ,  H04N5/225 ,  H04N5/247 ,  H04N19/597 ,  H04N13/232 ,  H04N19/46 ,  H04N19/42 ,  H04N19/33 ,  H04N13/275 ,  H04N19/147 ,  H04N19/436 ,  H04N19/895

Abstract: A video stream for a scene for a virtual reality or augmented reality experience may be stored and delivered to a viewer. The video stream may be divided into a plurality of units based on time segmentation, viewpoint segmentation, and/or view orientation segmentation. Each of the units may be divided into a plurality of sub-units based on a different segmentation from the units, via time segmentation, viewpoint segmentation, and/or view orientation segmentation. At least a portion of the video stream may be stored in a file that includes a plurality of the units. Each unit may be a group of pictures that is a sequence of successive frames in time. Each sub-unit may be a vantage defining a viewpoint from which the scene is viewable. Each vantage may be further divided into tiles, each of which is part of the vantage, limited to one or more particular view orientations.

公开(公告)号：US10567464B2

公开(公告)日：2020-02-18

申请号：US15832023

申请日：2017-12-05

Applicant: Google LLC

Inventor： Derek Pang ,  Colvin Pitts ,  Kurt Akeley

IPC: H04L29/06 ,  H04N19/124 ,  H04N19/44 ,  H04N19/196 ,  H04N19/13 ,  H04N5/247 ,  H04N13/156 ,  H04N5/225 ,  H04N13/243 ,  H04N5/222 ,  H04N13/194 ,  H04N13/117 ,  H04N19/176 ,  H04N19/33 ,  H04N13/161 ,  H04N13/282 ,  H04N13/232 ,  H04N19/103 ,  H04N19/147 ,  H04N19/46 ,  H04N19/86 ,  H04N19/597 ,  H04N13/349 ,  H04N19/553 ,  H04N13/275 ,  H04N21/81 ,  H04N13/344 ,  H04N19/436

Abstract: A video stream of a scene for a virtual reality or augmented reality experience may be captured by one or more image capture devices. Data from the video stream may be retrieved, including base vantage data with base vantage color data depicting the scene from a base vantage location, and target vantage data with target vantage color data depicting the scene from a target vantage location. The base vantage data may be reprojected to the target vantage location to obtain reprojected target vantage data. The reprojected target vantage data may be compared with the target vantage data to obtain residual data. The residual data may be compressed by removing a subset of the residual data that is likely to be less viewer-discernable than a remainder of the residual data. A compressed video stream may be stored, including the base vantage data and the compressed residual data.

公开(公告)号：US10469873B2

公开(公告)日：2019-11-05

申请号：US15730096

申请日：2017-10-11

Applicant: Google LLC

Inventor： Derek Pang ,  Colvin Pitts ,  Kurt Akeley ,  Zeyar Htet

IPC: H04N19/597 ,  H04N19/44 ,  H04N19/162 ,  H04N19/436 ,  H04N19/186 ,  H04N19/176 ,  H04N5/222 ,  H04N5/225 ,  H04N5/247 ,  H04N13/243 ,  H04N13/194 ,  H04N13/232 ,  H04N13/282 ,  H04N13/156 ,  H04N13/117 ,  H04N13/161 ,  H04N19/93 ,  H04N19/91 ,  H04N13/366 ,  H04N13/344 ,  H04N13/275

Abstract: A virtual reality or augmented reality experience of a scene may be decoded for playback for a viewer through a combination of CPU and GPU processing. A video stream may be retrieved from a data store. A first viewer position and/or orientation may be received from an input device, such as the sensor package on a head-mounted display (HMD). At a processor, the video stream may be partially decoded to generate a partially-decoded bitstream. At a graphics processor, the partially-decoded bitstream may be further decoded to generate viewpoint video of the scene from a first virtual viewpoint corresponding to the first viewer position and/or orientation. The viewpoint video may be displayed on a display device, such as screen of the HMD.

公开(公告)号：US10440407B2

公开(公告)日：2019-10-08

申请号：US15590808

申请日：2017-05-09

Applicant: Google LLC

Inventor： Alex Song ,  Derek Pang ,  Mike Ma ,  Nikhil Karnad

IPC: H04N21/234 ,  G02B27/22 ,  H04N13/117 ,  H04N13/373 ,  H04N13/38 ,  G06F16/70 ,  H04N13/344 ,  H04N13/366 ,  H04N13/398 ,  H04N21/218 ,  H04N21/2343 ,  H04N21/845

Abstract: A combined video of a scene may be generated for applications such as virtual reality or augmented reality. In one method, a data store may store video data with a first portion having a first importance metric, and a second portion having a second importance metric, denoting that viewing of the first portion is more likely and/or preferential to viewing of the second portion. The subset may be retrieved and used to generate viewpoint video from a virtual viewpoint corresponding to a viewer's viewpoint. The viewpoint video may be displayed on a display device. One of storing the video data, retrieving the subset, and using the subset to generate the viewpoint video may include, based on the difference between the first and second importance metrics, expediting and/or enhancing performance of the step for the first portion, relative to the second portion.