公开(公告)号：US20190273910A1

公开(公告)日：2019-09-05

申请号：US15912323

申请日：2018-03-05

Applicant: Valve Corporation

Inventor： Yasser Malaika

IPC: H04N13/332 ,  G06F3/01 ,  A63F13/25 ,  G02B27/01

Abstract: Techniques are described for controlling image display via compression of image data in some image regions while performing less or no compression in other (e.g., peripheral view) regions, with color-specific compression preserving chromatic aberration compensation. Such techniques may be used with display panel(s) of a head-mounted display device used for virtual reality display. A primary region of an image at which to encode and display data at a highest resolution level may be determined by tracking a gaze of a user, while other secondary regions may be selected to be surrounding or other outside the primary region. In the secondary regions, image data for a first (e.g., green) color channel may be encoded at a first compression level for a first resolution level lower higher than for other second color channels, and HDR data may be compressed at higher compression levels than the color-specific data.

公开(公告)号：US10373297B2

公开(公告)日：2019-08-06

申请号：US15335194

申请日：2016-10-26

Applicant: Valve Corporation

Inventor： Yasser Malaika ,  Dan Newell ,  Gordon Wayne Stoll

IPC: G06T5/00 ,  G06F3/01 ,  G02B27/01 ,  G02B27/00

Abstract: The disclosure relates generally to techniques for using information about a user's actual or predicted pupil location for correcting optical distortions that are specific to an optical lens and display assembly through which the user is viewing one or more images. The described techniques may include identifying and mapping optical distortions specific to an optical lens and display assembly, and using such mapped optical distortions to correct images displayed to a wearer or other user receiving images via the assembly, such as based at least in part on pupil location of the wearer or other user. As one example, the one or more optical lens may be mounted inside a head-mounted display (HMD) that also includes a display panel or other image source for an eye of a wearer, and if so one or more pupil tracking mechanisms may be integrated into the HMD.

公开(公告)号：US20180068449A1

公开(公告)日：2018-03-08

申请号：US15258551

申请日：2016-09-07

Applicant: VALVE CORPORATION

Inventor： Yasser Malaika ,  Dan Newell

IPC: G06T7/00 ,  G06F3/01 ,  G06K9/00 ,  G06T7/20 ,  H04N5/33

Abstract: Eye-tracking systems and methods for use in consumer-class virtual reality (VR)/augmented reality (AR) applications, among other uses, are described. Certain embodiments combine optical eye tracking that uses camera-based pupil and corneal reflection detection with optical flow hardware running at a higher frequency. This combination provides the accuracy that can be attained with the former and at the same time adds the desirable precision and latency characteristics of the latter, resulting in a higher performing overall system at a relatively reduced cost. By augmenting a camera tracker with an array of optical flow sensors pointed at different targets on the visual field, one can perform sensor fusion to improve precision. Since the camera image provides an overall picture of eye position, that information can be used to cull occluded optical flow sensors, thus mitigating drift and errors due to blinking and other similar phenomena.