Patents by Inventor Tian Xia

Tian Xia 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).

  • Patent number: 11126876
    Abstract: Embodiments of the present disclosure provide a method and an apparatus for recognizing a traffic light, a device, a storage medium, and a vehicle. The method may include: obtaining semantic information of one or more traffic lights provided at an intersection, and recognizing states of the one or more traffic lights in an image captured by a camera; determining traffic lights representing same semantics from the one or more traffic lights based on the semantic information, and determining a uniform state corresponding to the traffic lights representing the same semantics according to states of the traffic lights representing the same semantics and preset confidences of respective traffic light states; and determining indication information of the traffic lights representing the same semantics according to the uniform state.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 21, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Qi Li, Han Gao, Yilin Gui, Tian Xia
  • Patent number: 11126875
    Abstract: A method and device of multi-focal sensing of an obstacle. A method includes acquiring detection results of obstacles at multiple moments by utilizing a camera with long focus lens and a camera with short focus lens; performing a target tracking to the acquired detection results, to obtain at least two tracking sequences, wherein each tracking sequence includes detection results acquired at the multiple moments for a same obstacle; and matching two random tracking sequences of the at least two tracking sequences, and combining the two random tracking sequences into a combined tracking sequence, if the matching is successful.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: September 21, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Han Gao, Guo Li, Xun Sun, Tian Xia
  • Patent number: 11120275
    Abstract: The present disclosure provides a visual perception method, an apparatus, a device and a medium based on an autonomous vehicle, the method includes inputting an obtained first visual perception image collected by the autonomous vehicle into a first neural network model, recognizing multi-channel feature information of at least one target recognition object to be recognized, to eliminate redundant feature information in the first visual perception image; further, inputting the multi-channel feature information of the at least one target recognition object to be recognized into at least one sub-neural network model in a second neural network model respectively, to obtain at least one target recognition object; where there is a one to one correspondence between the target recognition object and the sub-neural network model.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: September 14, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Jiajia Chen, Ji Wan, Tian Xia
  • Publication number: 20210278199
    Abstract: A method, device, apparatus and a computer-readable storage medium for detecting a height of an obstacle are provided. The method can include: acquiring observation data of a plurality of reference obstacles from a frame; according to the observation data of each of the reference obstacles, fitting a function F: Z=F(ymax), wherein the observation data of a reference obstacle comprises a longitudinal coordinate of a bottom of the reference obstacle in the frame, and a distance between the reference obstacle and a camera capturing the frame; and determining a distance between the obstacle to be detected and the camera, according to the longitudinal coordinate of the bottom of the obstacle in the frame and the function F; and determining an evaluation value of the height of the obstacle to be detected according to the distance between the obstacle to be detected and the camera.
    Type: Application
    Filed: May 26, 2021
    Publication date: September 9, 2021
    Inventors: Han GAO, Xun SUN, Tian XIA
  • Patent number: 11113546
    Abstract: A lane line processing method and device are provided. The method can includes obtaining distances between lane line points in a first image, determining direction densities of the individual lane line points by using the distances between the lane line points, dividing lane line points into groups corresponding to lane lines by using the direction densities of the individual lane line points, and obtaining representation information of the lane lines corresponding to the groups by using the lane line points in the groups. By using the direction densities of the individual lane line points, lane line points in an image are divided into groups, the obtained groups are then more accurate, and thus the lane lines obtained by fitting are accurate, are less susceptible to image quality issues, and have high robustness.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: September 7, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Shufu Xie, Yuqiang Zhai, Tian Xia, Yu Ma
  • Patent number: 11113836
    Abstract: Embodiments of object detection method, device, apparatus and a computer-readable storage medium are provided. The method can include: obtaining an enclosing frame of a target object in an input image; according to the enclosing frame, determining a reference frame from a predetermined candidate frame set comprising a plurality of candidate frames; generating a size-related feature according to a size of the reference frame and a size of the enclosing frame; and detecting an object in the input image by applying the size-related feature in a machine learning model. In an embodiment of the present application, the object detection is performed by using a feature related to an object size, that is, the prediction criterion related to the object size is added to an original feature in a machine learning model, thereby further improving the accuracy of the object detection.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: September 7, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Xuehui Wang, Ming Li, Tian Xia
  • Publication number: 20210259430
    Abstract: A folding bed frame that includes four vertical faces: two ends and two sides. Each face is formed by two slanting bars that are cross hinged together. The upper and lower ends of adjacent slanting bar sets are hinged together to form the whole frame structure. The two vertical faces are corresponding or symmetric, and each includes two sets of slanting bar sets that are hinged through to middle sections of the upper and lower angle plates. There is a vertical rod part on the cross-hinging point of each set of slanting bar set, and its movable position is set by a slide bushing. There is a barrier that is on the cross-hinging point of one of the slanting bars. The barrier can contact the upper part vertical bar, and form two support points with the slide bushing for the vertical bar part.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 26, 2021
    Inventors: Andrew David Frankel, Shi-Ping Zheng, Tian-Xia Zheng
  • Publication number: 20210260920
    Abstract: A braking caster is provided that includes casters, a frame, braking plates, and springs. One end of a spring is hung on to the spring hook of the brake plate, and the other end is hung on to the frame. As the unstable status is caused by the spring swinging with the brake plate to the position of the rivet, the manually driven brake handle bypasses the unstable status, and can achieve stable braking and released statuses.
    Type: Application
    Filed: February 24, 2020
    Publication date: August 26, 2021
    Inventors: Andrew David Frankel, Shi-Ping Zheng, Tian-Xia Zheng
  • Patent number: 11100341
    Abstract: A lane line tracking method and device are provided. The method can include: projecting a lane line detection result of previous K frames preceding a current frame in a camera coordinate system to a world coordinate system, to obtain a first projection result, wherein K is a positive integer greater than or equal to 1, and the previous K frames are consecutive K frames preceding the current frame; projecting the first projection result of the previous K frames in the world coordinate system to a camera coordinate system of the current frame, to obtain a second projection result; and determining, in the camera coordinate system of the current frame, lane line groups of the current frame, according to lane line groups in the second projection result of the previous K frames.
    Type: Grant
    Filed: July 11, 2019
    Date of Patent: August 24, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Shufu Xie, Yuqiang Zhai, Tian Xia, Yu Ma
  • Publication number: 20210254364
    Abstract: An expandable canopy tent frame includes two sets of four-bar linkage with overlapping and staggered central axial lines. The central axial hinge point and the side edge hinge point of the two linkage sets are aligned. The central axial hinge points have a lateral bar. The two ends of the lateral bar pass through the slide bushings on the side edge hinge points, and the slide bushings form the support with both sides of the lateral bar. The main structure has at least one fixed end and can be fixed on objects by utilizing that fixed end.
    Type: Application
    Filed: February 19, 2020
    Publication date: August 19, 2021
    Inventors: Andrew David Frankel, Shi-Ping Zheng, Tian-Xia Zheng
  • Patent number: 11080539
    Abstract: The method comprises: obtaining a first image collected by a long-focus camera, a second image collected by a short-focus camera, and positioning information and travelling direction of the autonomous vehicle collected by a positioning sensor at a target moment; according to the positioning information and traveling direction of the autonomous vehicle at the target moment, obtaining, from a high-precision map server, location information of traffic lights within a range of preset distance threshold ahead in the traveling direction of the autonomous vehicle at the target moment; recognizing the state of traffic lights at the target moment, according to the location information of the traffic lights at the target moment, and one image of the first image and second image.
    Type: Grant
    Filed: August 29, 2018
    Date of Patent: August 3, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Yuqiang Zhai, Tian Xia, Han Gao, Ming Li
  • Publication number: 20210196547
    Abstract: A device providing intelligent assistance in mobility for disabled people and others includes a mobility device and a lifting device detachably mounted on the mobility device. The lifting device includes a base frame, a retractable bracket structure, several wheels, a sitting pad, and a backrest. The wheels are mounted on a lower surface of the base frame and drive the lifting device to move. The retractable bracket structure is mounted on an upper surface of the base frame. The sitting pad is detachably mounted on the retractable bracket structure, and the backrest is rotatably mounted on the retractable bracket structure.
    Type: Application
    Filed: December 27, 2019
    Publication date: July 1, 2021
    Inventors: Chaoping Qin, Tian Xia, Mei Han, Peng Chang, Bo Gong
  • Patent number: 11047673
    Abstract: A method, device, apparatus and a computer-readable storage medium for detecting a height of an obstacle are provided. The method can include: acquiring observation data of a plurality of reference obstacles from a frame; for each reference obstacle, determining a first evaluation value of the height of the obstacle to be detected, according to the observation data of the reference obstacle, an observed height of the obstacle to be detected in a frame, an actual height of the reference obstacle, and a distance between a bottom of the obstacle to be detected in the frame and an optical axis of a camera capturing the frame; and determining a second evaluation value of the height of the obstacle to be detected by using a plurality of first evaluation values for the plurality of reference obstacles.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: June 29, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD
    Inventors: Han Gao, Xun Sun, Tian Xia
  • Patent number: 11042761
    Abstract: Embodiments of a method and system for sensing an obstacle, a computer device, and a computer-readable storage medium are provided. The method can include: capturing continuously, by first and second cameras adjacently arranged on a motor vehicle, obstacles around the motor vehicle, to obtain at least a first obstacle image and a second obstacle image respectively; associating the first obstacle image with the second obstacle image; determining whether the first obstacle image and the second obstacle image comprise the same obstacle. By means of some of the disclosed methods and systems, an obstacle can be real-time sensed by a motor vehicle in a large field of view, such as, a range of 360° around the vehicle.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: June 22, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., LTD.
    Inventors: Guo Li, Han Gao, Xun Sun, Tian Xia
  • Patent number: 11037005
    Abstract: The disclosure discloses a method and apparatus for identifying a traffic light. An embodiment of the method comprises: zooming a to-be-processed image acquired by an image acquisition device by at least one preset ratio to obtain at least one zoomed image; inputting the at least one zoomed image into a pre-trained convolutional neural network to obtain location information and category information of a traffic light corresponding to each zoomed image of the at least one zoomed image, wherein the convolutional neural network is used for retrieving location information and category information of a traffic light displayed in an image; and analyzing the obtained location information and category information to generate at least one candidate traffic light identification result, and fusing the generated candidate traffic light identification result to generate a traffic light identification result corresponding to the to-be-processed image. The embodiment improves the accuracy in identifying a traffic light.
    Type: Grant
    Filed: July 30, 2018
    Date of Patent: June 15, 2021
    Assignee: Baidu Online Network Technology (Beijing) Co., Ltd.
    Inventors: Ming Li, Tian Xia, Han Gao, Yuqiang Zhai, Shijia Chen
  • Patent number: 11029402
    Abstract: An improved Ground Penetrating Radar (GPR) system is provided. The system advantageously employs full waveform digitization of a returning signal to significantly reduce the number of launch signals and allowing the amount of radiation emitted to stay within the limit set by the Federal Communications Commission (FCC), while producing a robust information detection signal. In addition, intermittent large latent-duty-cycle sampling employs a less expensive digitizer typically used in prior art GPRs. The system is scalable at low-cost to accommodate multi-antenna multi-static testing for subsurface tomographic imaging.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: June 8, 2021
    Assignee: The University of Vermont and State Agricultural College
    Inventors: Dryver R Huston, Tian Xia, Dylan Burns
  • Patent number: 11024045
    Abstract: Embodiments of the present disclosure provide a method and an apparatus for generating three-dimensional data, a device, and a storage medium. The method comprises: obtaining a profile information annotation result for a target object in a two-dimensional image; calculating depth of field of the target object and a three-dimensional orientation of the target object according to the profile information annotation result and a standard three-dimensional size of the target object; determining a three-dimensional coordinate of a reference two-dimensional image point in the target object according to a two-dimensional coordinate of the reference two-dimensional image point in the two-dimensional image and the depth of field; and generating three-dimensional data matching the target object according to the three-dimensional coordinate of the reference two-dimensional image point and the three-dimensional orientation of the target object.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: June 1, 2021
    Assignee: BAIDU ONLINE NETWORK TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Yucheng Wang, Xun Sun, Tian Xia
  • Publication number: 20210145180
    Abstract: A chair leg bridge connector is shown. The bridge connector is made of stamp-molded steel plate. Two sets of curve sections face the same direction. The two bent surfaces of each set are parallel, and through hole is provided for rivet or axis to pass through. The through hole axial lines of the two sets of curve sections have a corner angle to allow bridge positioning of the two facade supporting frames. Butterfly chairs that use this type of bridge connector with reinforcement warp plate at the tube hinging spot can be directly formed using lighter tubes to make the structure more mobile.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 20, 2021
    Inventors: Andrew David Frankel, Shi-Ping Zheng, Tian-Xia Zheng
  • Patent number: D926691
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 3, 2021
    Assignees: Tyco Electronics (Shanghai) Co. Ltd., Tyco Electronics Japan G.K.
    Inventors: Ken Sakai, Ramachandra Pai B. Rajendra, Yulin Feng, Lei Pan, Tian Xia
  • Patent number: D926692
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: August 3, 2021
    Assignees: Tyco Electronics Japan G.K., Tyco Electronics (Shanghai) Co., Ltd.
    Inventors: Ken Sakai, Ramachandra Pai B. Rajendra, Yulin Feng, Lei Pan, Tian Xia