公开(公告)号：US10572761B1

公开(公告)日：2020-02-25

申请号：US15997891

申请日：2018-06-05

Applicant: GOOGLE LLC

Inventor： Behnam Bastani ,  Eliezer Peli

IPC: G06K9/40 ,  G06T5/00 ,  G06T19/00 ,  G06T3/40

Abstract: Displaying video in an HMD may include introducing unperceived noise to the video frame signal in order to enhance dynamic range. For example, each of a viewer's left and right eyes have a field of view (FOV) corresponding to a portion of pixels shown on the HMD. For each of these portions of pixels, the VR system may combine a noise signal (e.g., zero-mean Gaussian white noise) with the video signals corresponding to each of the portions of pixels. The introduction of such noise may improve the dynamic range of the viewer. Further, in some implementations, the noise signal that is combined with the left video signal may be slightly different from the noise signal that is combined with the right video signal. Such slightly different noise signals may provide further improvement to the image seen by the viewer due to binocular summation.

公开(公告)号：US11100714B2

公开(公告)日：2021-08-24

申请号：US16298441

申请日：2019-03-11

Applicant: GOOGLE LLC

Inventor： Clayton Woodward Bavor, Jr. ,  Joshua Weaver ,  Alexander James Faaborg ,  Eliezer Peli

IPC: G06T19/00 ,  G02B27/01 ,  G06F1/16 ,  G06F3/01 ,  G06T3/40

Abstract: An example technique may include performing, by a virtual reality application provided on a computing device, video rendering at a first video rendering rate based on updating an entire image on a screen of the computing device at a first update rate, determining that a performance of the video rendering is less than a threshold, performing, based on the determining, video rendering at a second video rendering rate by updating a first portion of the image at the first update rate, and by updating a second portion of the image at a second update rate that is less than the first update rate. Another example technique may include shifting, during an eye blinking period, one or both of a left eye image and a right eye image to reduce a disparity between a left viewed object and a right viewed object.

公开(公告)号：US20190206139A1

公开(公告)日：2019-07-04

申请号：US16298441

申请日：2019-03-11

Applicant: GOOGLE LLC

Inventor： Clayton Woodward Bavor, JR. ,  Joshua Weaver ,  Alexander James Faaborg ,  Eliezer Peli

IPC: G06T19/00 ,  G06F3/01 ,  G06F1/16 ,  G02B27/01 ,  G06T3/40

CPC classification number: G06T19/006 ,  G02B27/017 ,  G02B2027/0134 ,  G06F1/163 ,  G06F3/011 ,  G06F3/012 ,  G06F3/013 ,  G06F3/017 ,  G06T3/40

Abstract: An example technique may include performing, by a virtual reality application provided on a computing device, video rendering at a first video rendering rate based on updating an entire image on a screen of the computing device at a first update rate, determining that a performance of the video rendering is less than a threshold, performing, based on the determining, video rendering at a second video rendering rate by updating a first portion of the image at the first update rate, and by updating a second portion of the image at a second update rate that is less than the first update rate. Another example technique may include shifting, during an eye blinking period, one or both of a left eye image and a right eye image to reduce a disparity between a left viewed object and a right viewed object.