Patent
Depth camera based on structured light and stereo vision
Sagi Katz,Avishai Adler +1 more
TLDR
In this article, a depth camera system uses a structured light illuminator and multiple sensors such as infrared light detectors, such as in a system which tracks the motion of a user in a field of view.Abstract:
A depth camera system uses a structured light illuminator and multiple sensors such as infrared light detectors, such as in a system which tracks the motion of a user in a field of view. One sensor can be optimized for shorter range detection while another sensor is optimized for longer range detection. The sensors can have a different baseline distance from the illuminator, as well as a different spatial resolution, exposure time and sensitivity. In one approach, depth values are obtained from each sensor by matching to the structured light pattern, and the depth values are merged to obtain a final depth map which is provided as an input to an application. The merging can involve unweighted averaging, weighted averaging, accuracy measures and/or confidence measures. In another approach, additional depth values which are included in the merging are obtained using stereoscopic matching among pixel data of the sensors.read more
Citations
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Patent
Dynamic adjustment of light source power in structured light active depth sensing systems
TL;DR: In this paper, a method and device is provided that compensates for different reflectivity/absorption coefficients of objects in a scene/object when performing active depth sensing using structured light.
Patent
Combined depth filtering and super resolution
TL;DR: In this paper, a depth pixel of the depth map is initially assigned a confidence value based on curvature values and localized contrast information, and then a new depth value is assigned based on an extrapolation of depth values associated with neighboring pixel locations.
Patent
Encoding and decoding virtual reality video
TL;DR: In this article, 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, where a video stream may be retrieved from a data store and a first viewer position and orientation may be received from an input device, such as the sensor package on a head-mounted display (HMD).
Patent
Motion tracking system for real time adaptive motion compensation in biomedical imaging
Jeffrey N. Yu,Thomas Ernst +1 more
TL;DR: In this paper, a motion tracking system is configured to overlay tracking data over biomedical imaging data in order to display the tracking data along with its associated image data, and one or more detectors are configured to detect images of a patient, and a detector processing interface is configured for analyzing the images to estimate motion or movement of the patient and to generate tracking data describing the patient's motion.
Patent
Methods and systems for generating depth data by converging independently-captured depth maps
Kamal Syed Meeran,Smith Steven L,Pan Yongsheng,Virodov Sergey,Globerson Jonathan A,Chandrasiri Lama Hewage Ravi Prathapa,Mohammad Raheel Khalid +6 more
TL;DR: In this paper, the first and second depth maps of a real-world scene are obtained independently using first-and second-level depth map capture techniques, respectively, and a third depth data point representing the physical point on the surface of the object is generated.
References
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Journal ArticleDOI
A multiple-baseline stereo
Masatoshi Okutomi,Takeo Kanade +1 more
TL;DR: It is shown that the SSSD-in-inverse-distance function exhibits a unique and clear minimum at the correct matching position, even when the underlying intensity patterns of the scene include ambiguities or repetitive patterns.
Patent
Apparatus and methods for determining the three-dimensional shape of an object using active illumination and relative blurring in two images due to defocus
TL;DR: In this article, a method and apparatus for mapping depth of an object in a preferred arrangement uses a projected light pattern to provide a selected texture to the object along the optical axis (24) of observation.
Patent
3d geometric modeling and motion capture using both single and dual imaging
Eyal Gordon,Gur Arie Bittan +1 more
TL;DR: In this article, a bi-dimensional coded light pattern is projected on the object such that each of the identifiable feature types appears at most once on predefined sections of distinguishable epipolar lines.
Patent
3d geometric modeling and 3d video content creation
Eyal Gordon,Gur Arieh Bittan +1 more
TL;DR: In this paper, a bi-dimensional coded light pattern is projected on the object such that each of the identifiable feature types appears at most once on predefined sections of distinguishable epipolar lines.
Patent
Vision system for an autonomous vehicle
TL;DR: In this article, a stereo vision system using a combination of cameras having > a wide baseline in order to detect obstacles that are relatively far away from the cameras and > a shorter baseline to detect obstacle that are closer to the cameras is presented.