Patents by Inventor Rui BAO

Rui BAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20190354746
    Abstract: A method and apparatus for detecting a living body, an electronic device and a storage medium include: performing target object detection on a first image captured by a first image sensor in a binocular camera apparatus to obtain a first target region, and performing the target object detection on a second image captured by a second image sensor in the binocular camera apparatus to obtain a second target region; obtaining key point depth information of a target object according to the first target region and the second target region; and determining, based on the key point depth information of the target object, whether the target object is a living body.
    Type: Application
    Filed: December 28, 2018
    Publication date: November 21, 2019
    Applicant: BEIJING SENSETIME TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: Rui ZHANG, Kai YANG, Tianpeng BAO, Liwei WU
  • Publication number: 20190347823
    Abstract: A method for detecting a living body includes: acquiring depth information of a target object sensed by a first sensor and a target image sensed by a second sensor; performing key point detection on the target image to obtain key point information of the target object; and obtaining a living body detection result of the target object based on the depth information of the target object and the key point information of the target object.
    Type: Application
    Filed: December 27, 2018
    Publication date: November 14, 2019
    Applicant: BEIJING SENSETIME TECHNOLOGY DEVELOPMENT CO., LTD
    Inventors: Kai YANG, Tianpeng BAO, Rui ZHANG, Liwei WU
  • Publication number: 20190310354
    Abstract: Embodiments discussed herein refer to LiDAR systems that use avalanche photo diodes for detecting returns of laser pulses. The bias voltage applied to the avalanche photo diode is adjusted to ensure that it operates at desired operating capacity.
    Type: Application
    Filed: April 9, 2019
    Publication date: October 10, 2019
    Inventors: Yufeng Li, Yimin Li, Rui Zhang, Junwei Bao, Jim Li
  • Publication number: 20190277953
    Abstract: Embodiments discussed herein refer to LiDAR systems and methods that monitor for fault conditions that could potentially result in unsafe operation of a laser. The systems and methods can monitor for faulty conditions involving a transmitter system and movement of mirrors in a scanning system. When a fault condition is monitored, a shutdown command is sent to the transmitter system to cease laser transmission. The timing by which the laser should cease transmission is critical in preventing unsafe laser exposure, and embodiments discussed herein enable fault detection and laser shutoff to comply with laser safety standards.
    Type: Application
    Filed: March 7, 2019
    Publication date: September 12, 2019
    Inventors: Yufeng Li, Yimin Li, Rui Zhang, Junwei Bao
  • Publication number: 20190278426
    Abstract: A method includes receiving, by a device, a request to input information through a virtual canvas, the device includes a projector and a camera, the virtual canvas providing an input space to a user of the device, the virtual canvas includes a region of a blank surface illuminated by the projector, based on the received request, enabling the projector and the camera, detecting a distance between the device and the virtual canvas, based on the detected distance, adjusting the projector and the camera to focus on the virtual canvas, capturing a movement made by an object on the virtual canvas, the movement is associated with the information being input, converting the movement into a plurality of frames, each frame is associated with the movement, processing the plurality of frames to obtain the input information, and projecting the input information on the virtual canvas.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 12, 2019
    Inventors: Shiwen He, Rui Shen, Wen Bao Yin, Dan Dan Wang, Jun Liao
  • Publication number: 20190265334
    Abstract: In accordance with some embodiments, a light detection and ranging (LiDAR) system comprise: a control system housing; a first LiDAR head housing separate and distinct from the control system housing; a light source within the control system housing configured to produce a first pulse signal; a light detector within the control system housing configured to detect a first return pulse signal associated with the pulse signal; a first pulse steering system within the first LiDAR housing configured to direct the first pulse signal in a first direction; a first fiber coupled to the light source and the first pulse steering system, the first fiber configured to carry the first pulse signal from the light source to the first pulse steering system; and a second fiber configured to carry a first returned pulse signal from the first LiDAR head housing to the light detector.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 29, 2019
    Inventors: Rui ZHANG, Jim LI, Yufeng LI, Yimin LI, Junwei BAO
  • Publication number: 20190265337
    Abstract: A LiDAR system includes a steering system and a light source. In some cases, the steering system includes a rotatable polygon with reflective sides and/or a dispersion optic. The light source produces light signals, such as light pulses. In some cases, the light sources products light pulses at different incident angles and/or different wavelengths. The steering system scans the light signals. In some cases, the light pulses are scanned based on the wavelength of the light pulses.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Rui ZHANG, Yimin LI, Junwei BAO
  • Publication number: 20190265339
    Abstract: In accordance with some embodiments, a light detection and ranging (LiDAR) system comprises: a control system housing; a first LiDAR head housing separate and distinct from the control system housing; a light source within the control system housing, the light source configured to produce a first pulse signal; a light detector within the control system housing configured to detect a first return pulse signal associated with the pulse signal; a first pulse steering system within the first LiDAR head housing, the first pulse steering system configured to direct the first pulse signal in a first direction; a first fiber configured to carry the first pulse signal from the light source to the first pulse steering system; and a second fiber configured to carry a first returned pulse signal from the first LiDAR head housing to the light detector.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 29, 2019
    Inventors: Rui ZHANG, Jim LI, Yufeng LI, Yimin LI, Junwei BAO
  • Publication number: 20190265336
    Abstract: A light detection and ranging (LiDAR) system includes a rotatable polygon having a plurality of reflective sides including a first reflective side. The rotatable polygon configured to scan one or more first light signals in a first direction. The LiDAR system also includes a scanning optic configured to scan the one or more first light signals in a second direction different than the first direction. A first light source is configured to direct the one or more first light signals to one or more of the plurality of reflective sides of the rotatable polygon or the scanning optic. A first detector is configured to detect a first return light signal associated with a signal of the one or more first light signals. One or more optics are configured to focus the first return light signal on the first detector.
    Type: Application
    Filed: February 22, 2019
    Publication date: August 29, 2019
    Inventors: Rui ZHANG, Huitao SUN, Zheng YANG, Yimin LI, Junwei BAO
  • Publication number: 20190257926
    Abstract: Embodiments discussed herein refer to LiDAR systems that use diode lasers to generate a high-repetition rate and multi-mode light pulse that is input to a fiber optic cable that transmits the light pulse to a scanning system.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 22, 2019
    Inventors: Rui Zhang, Yimin Li, Junwei Bao
  • Publication number: 20190257947
    Abstract: Embodiments discussed herein refer to LiDAR systems that accurately observe objects that are relatively close and objects that are relatively far using systems and methods that employ a variable time interval between successive laser pulses and one or more filters.
    Type: Application
    Filed: February 21, 2019
    Publication date: August 22, 2019
    Inventors: Rui Zhang, Gang Zhou, Yimin Li, Junwei Bao
  • Publication number: 20190212416
    Abstract: Embodiments discussed herein refer to a relatively compact and energy efficient LiDAR system that can be mounted to a windshield on the interior cabin portion of a vehicle. In order to accommodate the relatively compact size of the LiDAR system, multiple moveable components are used to ensure that a desired resolution is captured in the system's field of view.
    Type: Application
    Filed: January 8, 2019
    Publication date: July 11, 2019
    Inventors: Yimin Li, Rui Zhang, Junwei Bao
  • Publication number: 20190147641
    Abstract: The invention discloses a real-time rendering method based on energy consumption-error precomputation, comprising: determining the spatial level structure of the scene to be rendered through adaptive subdivision of the space positions and look space of the camera browsable to the user in the 3D scene to be rendered; during the process of adaptive subdivision of the space, for each position subspace obtained at the completion of each subdivision, obtaining the error and energy consumption of the camera for rendering the 3D scene using a plurality of sets of preset rendering parameters in each look subspace at each vertex of the bounding volume that bounds the position subspace, and Pareto curve of the corresponding vertex and look subspace is built based on the error and energy consumption; based on the current camera viewpoint information, searching and obtaining the target Pareto curve in the spatial level structure to determine a set of rendering parameters satisfying the precomputation condition as optimum
    Type: Application
    Filed: April 18, 2017
    Publication date: May 16, 2019
    Inventors: RUI WANG, HUJUN BAO, TIANLEI HU, BOWEN YU
  • Patent number: 9531940
    Abstract: A liquid crystal lens imaging apparatus includes a lens group containing at least a liquid crystal lens, a drive circuit, an image collecting unit, and an image processing unit. The drive circuit is connected to the liquid crystal lens to drive the liquid crystal lens into an out-of-focus state or into an in-focus state. The image collecting unit is configured to collect light signal passing through the liquid crystal lens and to generate an image according to the light signal. When the liquid crystal lens is in the in-focus state, the image collecting unit generates an in-focus image of the light signal and, when the liquid crystal lens is in the out-of-focus state, the image collecting unit generates an out-of-focus image of the light signal. Further, the image processing unit is connected to the image collecting unit to receive both the in-focus image and the out-of-focus image and to process the in-focus image using the out-of-focus image to obtain a processed in-focus image as a final generated image.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: December 27, 2016
    Assignee: SHENZHEN MERCURY OPTOELECTRONICS RESEARCH INSTITUTE
    Inventors: Mao Ye, Chunhui Cui, Rui Bao, Shuda Yu
  • Patent number: 9479683
    Abstract: The present invention provides a liquid crystal lens imaging apparatus and method. Wherein, the imaging apparatus comprises a lens group including at least a liquid crystal lens, a drive circuit, an image collecting unit and an image processing unit. The drive circuit is connected to the liquid crystal lens to drive the liquid crystal lens respectively into an in-focus state or into an out-of-focus state. The image collecting unit is configured to collect light signal passing through the liquid crystal lens to generate an image. When the liquid crystal lens is in the in-focus state, the image collecting unit generates an in-focus image of the light signal and, when the liquid crystal lens is in the out-of-focus state, the image collecting unit generates an out-of-focus image of the light signal as a reference image.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: October 25, 2016
    Assignee: SHENZHEN MERCURY OPTOELECTRONICS RESEARCH INSTITUTE
    Inventors: Chunhui Cui, Mao Ye, Shuda Yu, Rui Bao
  • Patent number: 9380205
    Abstract: Liquid crystal lens imaging apparatus and method are provided. The apparatus includes: juxtaposed at least two lens groups, a rubbing direction of alignment layer of a LC lens in one lens group being perpendicular to a rubbing direction of alignment layer of a LC lens in neighboring another lens group; an image capture unit for forming first and second image signals according to light signals passing through the lens groups at a first moment and forming third and fourth image signals according to light signals passing through the lens groups at a second moment; an image processor for processing the image signals to obtain a final formed image signal; and a driving circuit for controlling the LC lenses to be non-lens state and lens state respectively at the first and second moments. No polarizer is used, the intensity of received incident light is increased and the thickness is reduced.
    Type: Grant
    Filed: December 30, 2014
    Date of Patent: June 28, 2016
    Assignee: SHENZHEN MERCURY OPTOELECTRICS RESEARCH INSTITUTE
    Inventors: Rui Bao, Chunhui Cui
  • Publication number: 20160037024
    Abstract: The present invention provides a liquid crystal lens imaging apparatus and method. Wherein, the imaging apparatus comprises a lens group including at least a liquid crystal lens, a drive circuit, an image collecting unit and an image processing unit. The drive circuit is connected to the liquid crystal lens to drive the liquid crystal lens respectively into an in-focus state or into an out-of-focus state. The image collecting unit is configured to collect light signal passing through the liquid crystal lens to generate an image. When the liquid crystal lens is in the in-focus state, the image collecting unit generates an in-focus image of the light signal and, when the liquid crystal lens is in the out-of-focus state, the image collecting unit generates an out-of-focus image of the light signal as a reference image.
    Type: Application
    Filed: December 23, 2014
    Publication date: February 4, 2016
    Inventors: Chunhui CUI, Mao YE, Shuda YU, Rui BAO
  • Publication number: 20150381877
    Abstract: A liquid crystal lens imaging apparatus includes a lens group containing at least a liquid crystal lens, a drive circuit, an image collecting unit, and an image processing unit. The drive circuit is connected to the liquid crystal lens to drive the liquid crystal lens into an out-of-focus state or into an in-focus state. The image collecting unit is configured to collect light signal passing through the liquid crystal lens and to generate an image according to the light signal. When the liquid crystal lens is in the in-focus state, the image collecting unit generates an in-focus image of the light signal and, when the liquid crystal lens is in the out-of-focus state, the image collecting unit generates an out-of-focus image of the light signal. Further, the image processing unit is connected to the image collecting unit to receive both the in-focus image and the out-of-focus image and to process the in-focus image using the out-of-focus image to obtain a processed in-focus image as a final generated image.
    Type: Application
    Filed: December 23, 2014
    Publication date: December 31, 2015
    Inventors: MAO YE, CHUNHUI CUI, RUI BAO, SHUDA YU
  • Publication number: 20150189174
    Abstract: Liquid crystal lens imaging apparatus and method are provided. The apparatus includes: juxtaposed at least two lens groups, a rubbing direction of alignment layer of a LC lens in one lens group being perpendicular to a rubbing direction of alignment layer of a LC lens in neighboring another lens group; an image capture unit for forming first and second image signals according to light signals passing through the lens groups at a first moment and forming third and fourth image signals according to light signals passing through the lens groups at a second moment; an image processor for processing the image signals to obtain a final formed image signal; and a driving circuit for controlling the LC lenses to be non-lens state and lens state respectively at the first and second moments. No polarizer is used, the intensity of received incident light is increased and the thickness is reduced.
    Type: Application
    Filed: December 30, 2014
    Publication date: July 2, 2015
    Applicant: Shenzhen Mercury Optoelectronics Research Institute
    Inventors: Rui BAO, Chunhui CUI
  • Patent number: 8913215
    Abstract: A bistable switchable liquid crystal device is provided in which the device can be switched between a transparent and an opaque state by a predetermined voltage pulse. The device is based on polymer stabilized cholesteric materials. No additional amount of voltage has to be applied to the device in order to sustain the optical states. Therefore, the device is energy-saving.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: December 16, 2014
    Assignee: Kent State University
    Inventors: Deng-Ke Yang, Lei Shi, Rui Bao