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11. 发明授权

US10228561B2 Eye-tracking system using a freeform prism and gaze-detection light 有权
公开(公告)号：US10228561B2
公开(公告)日：2019-03-12
申请号：US13927025
申请日：2013-06-25
申请人： Microsoft Technology Licensing, LLC
发明人： Steve Robbins , Scott McEldowney , Xinye Lou , David Nister , Drew Steedly , Quentin Simon Charles Miller , David D Bohn , James Peele Terrell, Jr. , Andrew C. Goris , Nathan Ackerman
IPC分类号： G02B27/01 , G02B27/00 , G02B5/04
摘要： An example see-through head-mounted display system includes a freeform prism and a display device configured to emit display light through the freeform prism to an eye of a user. The see-through head-mounted display system may also include an imaging device configured to receive gaze-detection light reflected from the eye and directed through the freeform prism.

12. 发明授权

US09934451B2 Stereoscopic object detection leveraging assumed distance 有权
公开(公告)号：US09934451B2
公开(公告)日：2018-04-03
申请号：US13926882
申请日：2013-06-25
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： David Nister , Piotr Dollar , Wolf Kienzle , Mladen Radojevic , Matthew S. Ashman , Ivan Stojiljkovic , Magdalena Vukosavljevic
IPC分类号： G06K9/00 , G06K9/62 , G06F3/01 , G06T7/73
CPC分类号： G06K9/6256 , G06F3/017 , G06K9/00375 , G06K9/00536 , G06K9/6292 , G06T7/73
摘要： A method of object detection includes receiving a first image taken by a first stereo camera, receiving a second image taken by a second stereo camera, and offsetting the first image relative to the second image by an offset distance selected such that each corresponding pixel of offset first and second images depict a same object locus if the object locus is at an assumed distance from the first and second stereo cameras. The method further includes locating a target object in the offset first and second images.

13. 发明授权

US09330302B2 Polarized gaze tracking 有权
标题翻译：极化注视跟踪
公开(公告)号：US09330302B2
公开(公告)日：2016-05-03
申请号：US14191305
申请日：2014-02-26
申请人： MICROSOFT TECHNOLOGY LICENSING, LLC
发明人： Vaibhav Thukral , Sudipta Sinha , Vivek Pradeep , Timothy Andrew Large , Nigel Stuart Keam , David Nister
IPC分类号： H04N5/235 , G06K9/00 , H04N5/232 , G06F3/01 , G06K9/20
CPC分类号： G06K9/00335 , G06F3/013 , G06K9/00604 , G06K9/2027 , H04N5/23219 , H04N5/2354
摘要： Embodiments that relate to determining gaze locations are disclosed. In one embodiment a method includes shining light along an outbound light path to the eyes of the user wearing glasses. Upon detecting the glasses, the light is dynamically polarized in a polarization pattern that switches between a random polarization phase and a single polarization phase, wherein the random polarization phase includes a first polarization along an outbound light path and a second polarization orthogonal to the first polarization along a reflected light path. The single polarization phase has a single polarization. During the random polarization phases, glares reflected from the glasses are filtered out and pupil images are captured. Glint images are captured during the single polarization phase. Based on pupil characteristics and glint characteristics, gaze locations are repeatedly detected.
摘要翻译：公开了与确定凝视位置有关的实施例。在一个实施例中，一种方法包括沿着出射光路将光照射到佩戴眼镜的用户的眼睛。在检测到眼镜时，光以在随机偏振相位和单极化相位之间切换的偏振图案中被动态偏振，其中随机偏振相位包括沿着出射光路的第一偏振和与第一偏振正交的第二偏振沿反射光路。单极化相具有单极化。在随机极化阶段期间，从眼镜反射的眩光被滤出并且捕获瞳孔图像。在单极化阶段期间捕获闪烁图像。基于瞳孔特征和闪光特征，重复检测注视位置。

14. 发明授权

US09304586B2 Eye-typing term recognition 有权
标题翻译：眼科术语识别
公开(公告)号：US09304586B2
公开(公告)日：2016-04-05
申请号：US14573502
申请日：2014-12-17
申请人： Microsoft Technology Licensing, LLC
发明人： David Nister , Vaibhav Thukral , Djordje Nijemcevic , Ruchi Bhargava
IPC分类号： G06F3/01 , G06F3/023
CPC分类号： G06F3/013 , G06F3/0233 , G06F3/0236 , G06F3/0237
摘要： Various embodiments related to entering text into a computing device via eye-typing are disclosed. For example, one embodiment provides a method that includes receiving a data set including a plurality of gaze samples, each gaze sample including a gaze location and a corresponding point in time. The method further comprises processing the plurality of gaze samples to determine one or more likely terms represented by the data set.
摘要翻译：公开了通过眼睛分类将文本输入到计算设备中的各种实施例。例如，一个实施例提供了一种方法，其包括接收包括多个凝视样本的数据集，每个注视样本包括凝视位置和对应的时间点。该方法还包括处理多个凝视样本以确定由该数据集表示的一个或多个可能术语。

15. 发明授权

US10592778B2 Stereoscopic object detection leveraging expected object distance 有权
公开(公告)号：US10592778B2
公开(公告)日：2020-03-17
申请号：US15913118
申请日：2018-03-06
申请人： Microsoft Technology Licensing, LLC
发明人： David Nister , Piotr Dollar , Wolf Kienzle , Mladen Radojevic , Matthew S. Ashman , Ivan Stojiljkovic , Magdalena Vukosavljevic
IPC分类号： G06K9/00 , G06K9/62 , G06T7/73 , G06F3/01 , G06F3/03
摘要： A method of object detection includes receiving a first image taken from a first perspective by a first camera and receiving a second image taken from a second perspective, different from the first perspective, by a second camera. Each pixel in the first image is offset relative to a corresponding pixel in the second image by a predetermined offset distance resulting in offset first and second images. A particular pixel of the offset first image depicts a same object locus as a corresponding pixel in the offset second image only if the object locus is at an expected object-detection distance from the first and second cameras. The method includes recognizing that a target object is imaged by the particular pixel of the offset first image and the corresponding pixel of the offset second image.

16. 发明授权

US10248199B2 Gaze detection calibration 有权
公开(公告)号：US10248199B2
公开(公告)日：2019-04-02
申请号：US15670512
申请日：2017-08-07
申请人： Microsoft Technology Licensing, LLC
发明人： Weerapan Wilairat , Vaibhav Thukral , David Nister , Morgan Kolya Venable , Bernard James Kerr , Chris Aholt
IPC分类号： G06F3/01 , G02B27/01 , G06K9/00 , G06F1/16 , G06F3/0484 , G02B27/00
摘要： Examples relating to calibrating an estimated gaze location are disclosed. One example method comprises monitoring the estimated gaze location of a viewer using gaze tracking data from a gaze tracking system. Image data for display via a display device is received, the image data comprising at least one target visual and target visual metadata that identifies the at least one target visual. The target visual metadata is used to identify a target location of the at least one target visual. The estimated gaze location of the viewer is monitored and a probability that the viewer is gazing at the target location is estimated. The gaze tracking system is calibrated using the probability, the estimated gaze location and the target location to generate an updated estimated gaze location of the viewer.

17. 发明授权

US09916502B2 Handling glare in eye tracking 有权
公开(公告)号：US09916502B2
公开(公告)日：2018-03-13
申请号：US15243544
申请日：2016-08-22
申请人： Microsoft Technology Licensing, LLC
发明人： Mudit Agrawal , Vaibhav Thukral , Ibrahim Eden , David Nister , Shivkumar Swaminathan
IPC分类号： G06K9/00 , G06K9/52 , G06K9/46 , G06K9/62 , H04N5/33 , G06F3/01 , H04N5/225
CPC分类号： G06K9/0061 , G06F3/013 , G06K9/00604 , G06K9/00624 , G06K9/4661 , G06K9/52 , G06K9/6201 , H04N5/2256 , H04N5/33 , H04N5/332
摘要： Embodiments are disclosed for eye tracking systems and methods. An example eye tracking system comprises a plurality of light sources and a camera configured to capture an image of light from the light sources as reflected from an eye. The eye tracking system further comprises a logic device and a storage device storing instructions executable by the logic device to acquire frames of eye tracking data by iteratively projecting light from different combinations of light sources of the plurality of light sources and capturing an image of the eye during projection of each combination. The instructions may be further executable to select a selected combination of light sources for eye tracking based on a determination of occlusion detected in the image arising from a transparent or semi-transparent optical structure positioned between the eye and the camera and project light via the selected combination of light sources for eye tracking.

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