利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

63 条记录 (耗时 0.026 秒)

    METHOD, APPARATUS, AND SYSTEM FOR HUMAN RECOGNITION BASED ON GAIT FEATURES
    44.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR HUMAN RECOGNITION BASED ON GAIT FEATURES 有权

    公开(公告)号：US20220026530A1

    公开(公告)日：2022-01-27

    申请号：US17492599

    申请日：2021-10-02

    申请人： Chenshu Wu ,  Beibei Wang ,  K.J. Ray Liu ,  Oscar Chi-Lim Au

    发明人： Chenshu Wu ,  Beibei Wang ,  K.J. Ray Liu ,  Oscar Chi-Lim Au

    IPC分类号： G01S7/41 ,  H04W4/02 ,  G01S7/35 ,  G01S13/58

    摘要： Methods, apparatus and systems for human recognition based on one or more gait features detected wirelessly are described. In one example, a described system comprises: a transmitter configured to transmit a first wireless signal through a wireless channel of a venue; a receiver configured to receive a second wireless signal through the wireless channel, wherein the second wireless signal comprises a reflection of the first wireless signal by at least one object in the venue; and a processor. The processor is configured for: obtaining a time series of channel information (CI) of the wireless channel based on the second wireless signal, determining a presence of a person moving in the venue based on the time series of CI (TSCI), extracting at least one gait feature of the person from the TSCI, and recognizing an identity of the person based on the at least one gait feature.

    Method, apparatus, and system for providing automatic assistance based on wireless monitoring
    45.
    发明授权
    Method, apparatus, and system for providing automatic assistance based on wireless monitoring 有权

    公开(公告)号：US11202215B2

    公开(公告)日：2021-12-14

    申请号：US17113024

    申请日：2020-12-05

    申请人： Masato Marumo ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu

    发明人： Masato Marumo ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu

    IPC分类号： H04W24/02

    摘要： Methods, apparatus and systems for providing automatic assistance based on wireless monitoring are described. In one example, a described automatic assistant system comprises: a transmitter, a receiver, a processor, and an assistant device. The transmitter is configured for transmitting a first wireless signal through a wireless multipath channel of a venue. The receiver is configured for receiving a second wireless signal through the wireless multipath channel. The second wireless signal differs from the first wireless signal due to the wireless multipath channel that is impacted by a motion of an object in the venue. The processor is configured for: obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, and monitoring the motion of the object in the venue based on the TSCI. The assistant device is configured for generating an assistance with respect to the object in the venue based on the monitoring.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS MATERIAL SENSING
    46.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS MATERIAL SENSING 有权

    公开(公告)号：US20210190702A1

    公开(公告)日：2021-06-24

    申请号：US17180760

    申请日：2021-02-20

    申请人： Chenshu Wu ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Feng Zhang ,  K. J. Ray Liu

    发明人： Chenshu Wu ,  Beibei Wang ,  Oscar Chi-Lim Au ,  Feng Zhang ,  K. J. Ray Liu

    IPC分类号： G01N22/00

    摘要： Methods, apparatus and systems for wireless material sensing are described. In one example, a described system comprises: a transmitter configured for transmitting, using transmit antennas, a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving, using receive antennas, a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal comprises a reflection or a refraction of the first wireless signal at a surface of a target material of an object in the venue. The processor is configured for: obtaining a plurality of channel information (CI) of the wireless multipath channel based on the second wireless signal, wherein each CI is associated with a respective transmit antenna and a respective receive antenna; computing a material analytics based on the plurality of CI; and determining a type of the target material of the object based on the material analytics.

    METHOD, APPARATUS, AND SYSTEM FOR ACCURATE WIRELESS MONITORING
    47.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR ACCURATE WIRELESS MONITORING 有权

    公开(公告)号：US20210091866A1

    公开(公告)日：2021-03-25

    申请号：US17113023

    申请日：2020-12-05

    申请人： Feng Zhang ,  Beibei Wang ,  Hung-Quoc Duc Lai ,  Oscar Chi-Lim Au ,  K. J. Ray Liu

    发明人： Feng Zhang ,  Beibei Wang ,  Hung-Quoc Duc Lai ,  Oscar Chi-Lim Au ,  K. J. Ray Liu

    IPC分类号： H04B17/309

    摘要： Methods, apparatus and systems for improving accuracy and efficiency of wireless monitoring are described. In one example, a described method comprises: transmitting a first wireless signal from a first wireless device with transmit antennas through a wireless multipath channel of a venue; receiving a second wireless signal by a second wireless device with receive antennas through the wireless multipath channel, wherein the second wireless signal differs from the first wireless signal due to the wireless multipath channel that is impacted by a motion of an object in the venue; obtaining a number of time series of channel information (TSCI) of the wireless multipath channel based on the second wireless signal, wherein each TSCI is associated with a respective one of the transmit antennas and a respective one of the receive antennas; preprocessing the number of TSCI; and monitoring the motion of the object based on the number of preprocessed TSCI.

    Methods and apparatus for hiding data in halftone images
    48.
    发明授权
    Methods and apparatus for hiding data in halftone images 有权
    在半色调图像中隐藏数据的方法和装置

    公开(公告)号：US07804977B2

    公开(公告)日：2010-09-28

    申请号：US11508410

    申请日：2006-08-22

    申请人： Oscar Chi-Lim Au ,  Ming Sun Fu

    发明人： Oscar Chi-Lim Au ,  Ming Sun Fu

    IPC分类号： G06K9/00

    CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G06T2201/0083 ,  H04N1/32203 ,  H04N1/32245 ,  H04N1/32256 ,  H04N1/4052 ,  H04N2201/3233 ,  H04N2201/327

    摘要： We propose methods for generating a halftone image, in which each pixel takes one of two tone values. The generated image contains hidden data, which is present at data storage pixels chosen using a pseudo-random number generator. In a first case, the data is hidden within an existing halftone image by reversing the tone value at certain of the data storage pixels, and at pixels neighboring the data storage pixels. In a second case, the halftone image is generated from a grey-scale image, and data is hidden during this conversion process.

    摘要翻译： 我们提出了生成半色调图像的方法，其中每个像素采用两个色调值之一。 生成的图像包含存在于使用伪随机数生成器选择的数据存储像素处的隐藏数据。 在第一种情况下，通过反转某些数据存储像素处的色调值和与数据存储像素相邻的像素，将数据隐藏在现有的半色调图像内。 在第二种情况下，从灰度图像生成半色调图像，并且在该转换处理期间数据被隐藏。

    Methods and apparatus for hiding data in halftone images
    49.
    发明授权
    Methods and apparatus for hiding data in halftone images 失效
    在半色调图像中隐藏数据的方法和装置

    公开(公告)号：US07058199B1

    公开(公告)日：2006-06-06

    申请号：US09638014

    申请日：2000-08-14

    申请人： Oscar Chi-Lim Au ,  Ming Sun Fu

    发明人： Oscar Chi-Lim Au ,  Ming Sun Fu

    IPC分类号： G06K9/00

    CPC分类号： G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G06T2201/0083 ,  H04N1/32203 ,  H04N1/32245 ,  H04N1/32256 ,  H04N1/4052 ,  H04N2201/3233 ,  H04N2201/327

    摘要： We propose methods for generating a halftone image, in which each pixel takes one of two tone values. The generated image contains hidden data, which is present at data storage pixels chosen using a pseudo-random number generator. In a first case, the data is hidden within an existing halftone image by reversing the tone value at certain of the data storage pixels, and at pixels neighboring the data storage pixels. In a second case, the halftone image is generated from a grey-scale image, and data is hidden during this conversion process.

    摘要翻译： 我们提出了生成半色调图像的方法，其中每个像素采用两个色调值之一。 生成的图像包含存在于使用伪随机数生成器选择的数据存储像素处的隐藏数据。 在第一种情况下，通过反转某些数据存储像素处的色调值和与数据存储像素相邻的像素，将数据隐藏在现有的半色调图像内。 在第二种情况下，从灰度图像生成半色调图像，并且在该转换处理期间数据被隐藏。