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
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Terminals and methods for dimensioning objects
TL;DR: In this paper, an actuator is connected to at least one imaging subsystem for moving an angle of the optical axis relative to the terminal to align the object in the second image data with the first image data.
References
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Patent
Method and apparatus for processing images
TL;DR: In this paper, a method and apparatus for accurately computing parallax information as captured by imagery of a scene is presented. But the method is not suitable for the estimation of the exact position of each point in an image.
Patent
Depth Mapping Based on Pattern Matching and Stereoscopic Information
TL;DR: In this article, a first image of the pattern on the object is captured using first image sensor, and this image is processed to generate pattern-based depth data with respect to the object.
Patent
System and technique for retrieving depth information about a surface by projecting a composite image of modulated light patterns
TL;DR: In this paper, the authors present a technique for retrieving depth information about at least one surface of an object, such as an anatomical feature, by projecting a composite image comprising a plurality of modulated structured light patterns, at the anatomical feature; capturing an image reflected from the surface; and recovering pattern information from the reflected image, for each of the modulated structural light patterns.
Patent
Methods and systems for laser based real-time structured light depth extraction
Jeremy D. Ackerman,Kurtis Keller +1 more
TL;DR: In this paper, a real-time structured light depth extraction engine/controller was proposed based on the transmitted and reflected patterns and the reflected broadband light. But the authors did not specify the underlying architecture of the system.
Patent
Surface profile measurement
TL;DR: In this paper, the authors proposed a controllable shutter arrangement for allowing reception in a controlled time window, which enables the distance measurement and the subsequent profile calculation to be free from noise from other scattering sources.