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
Adaptable depth sensing system
TL;DR: In this paper, the authors describe an adaptable depth sensing (DS) system consisting of a DS equipment module and a control module, where the control module may configure the operational mode of the equipment module for close range sensing, mid-range sensing or long range sensing.
Patent
Distance sensor including adjustable focus imaging sensor
TL;DR: In this article, a method for calculating a distance to an object includes simultaneously activating a first projection point and a second projection point of a distance sensor to collectively project a reference pattern into a field of view.
Patent
Systems and methods for generating a structured light depth map with a non-uniform codeword pattern
TL;DR: In this paper, a depth map of a scene is generated by projecting, onto the scene, a codeword pattern including a plurality of light points including a first set of projections at a first intensity and a second set of projected at a second intensity greater than the first intensity.
Patent
Method and system utilizing depth camera for accurate measurement
TL;DR: In this paper, the error model between a measurement value of the depth camera and an actual value is established, and the measurement values of different depths are obtained by using a depth camera to measure one to-be-measured object in different depth and obtaining difference values of the different depths through measurement.
Patent
Generating an improved depth map usinga multi-aperture imaging system
TL;DR: In this article, a multi-aperture imaging system determines depth map information using normalized derivative values of high-frequency image data, and edge depth information is determined for the identified edges using a bank of blur kernels.
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.