Google Inc.

Peter Bradshaw

Jonathan J Huang

Samuel Kvaalen

Ryan Tyler Cairns

Eric Joseph Uhrhane

Andrew D Berkheimer

Ben S Hayden

A method of preserving file metadata associated with an edited file, performed on a client device, includes storing in a log information denoting a plurality of create, delete, and rename operations on one or more files in a file system, and determining when two or more operations denoted in the log, including an operation involving a first file and another operation involving a second file, comprise an atomic save of a respective file, the first file comprising a first version of the respective file, and the second file comprising a second version of the respective file, the first file and second file each having associated metadata. The method further includes associating a subset of the metadata of the first file with the second file, such that at least one of a globally unique file identifier and file access permissions associated with the first file become associated with the second file.

Preserving file metadata during atomic save operations

Disclosed herein are methods, devices, and non-transitory computer readable media that relate to stereoscopic image creation. A camera captures an initial image at an initial position. A target displacement from the initial position is determined for a desired stereoscopic effect, and an instruction is provided that specifies a direction in which to move the camera from the initial position. While the camera is in motion, an estimated displacement from the initial position is calculated. When the estimated displacement corresponds to the target displacement, the camera automatically captures a candidate image. An acceptability analysis is performed to determine whether the candidate image has acceptable image quality and acceptable similarity to the initial image. If the candidate image passes the acceptability analysis, a stereoscopic image is created based on the initial and candidate images.

Method and system for automatic 3-D image creation

Methods and systems related to the detection of 3-D video content are disclosed herein. Specifically, a video image file may be analyzed in order to determine if it contains 3-D stereoscopic video content. An assumption is made regarding the possible 3-D format of the video image file. The assumption could be that the video frame includes a left portion and a right portion where each portion contains respective stereoscopic image perspectives. Image analysis algorithms could be used to determine if the left and right portions are sufficiently similar to confirm the assumption. If so, an indication could be carried out that could include a change to metadata or a similar change to associated video image file information. If the left and right portions of the video frame are not sufficiently similar, another analysis may be performed to test a different 3-D file format assumption.

Detection of 3-D videos

Metadata for a set of files in a file system is stored in a client metadata database. In addition, a subset of content for the set of files in the client metadata database is stored in a client content database. The subset of content does not exceed a cache size that is less than a full size of the content in the set of the files. In response to a request, at least a portion of the content that is not already stored in the client content database is retrieved from a server content database, where the server content database is located remotely from the client device.

On demand access to client cached files

Injection of 3D metadata into a requested video is disclosed. An input video and associated metadata are received by a video hosting site. If the metadata indicates that the input video is a 3D video, the 3D video system extracts the accompanying 3D metadata and stores it in an intermediate format, which is independent of the 3D metadata format and video format of the input video. The 3D video system stores the received video in a standard 2D video format in a video database. Responsive to a video streaming request of the input video, the 3D video system determines the actual 3D metadata format based on the video format of the requested video, and injects a modified 3D metadata associated with the input video into the requested video.

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San Francisco, CA, United States of America

Peter Bradshaw