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    Efficient rate allocation for multi-resolution coding of data
    1.
    发明授权
    Efficient rate allocation for multi-resolution coding of data 有权
    数据的多分辨率编码的有效率分配

    公开(公告)号：US07970224B2

    公开(公告)日：2011-06-28

    申请号：US12638225

    申请日：2009-12-15

    申请人： Yick Ming Yeung ,  Oscar Chi-Lim Au

    发明人： Yick Ming Yeung ,  Oscar Chi-Lim Au

    IPC分类号： G06K9/36 ,  G06K9/46

    CPC分类号： H04N19/1883 ,  H04N19/115 ,  H04N19/129 ,  H04N19/132 ,  H04N19/146 ,  H04N19/147 ,  H04N19/184 ,  H04N19/19 ,  H04N19/63 ,  H04N19/647

    摘要： A method and an apparatus relates to examining respective collections of coefficients out of a plurality of collections of coefficients according to a global coding order of the plurality of collections of coefficients, the respective collections of coefficients having respective priority levels as well as respective pluralities of coding units and truncation points which correspond to the coding units. In response to determining that an examined collection of coefficients out of the plurality of collections of coefficients has a priority level equal to a global priority level, encoding a first un-encoded coding unit according to a local coding order of the collection of coefficients and reducing the priority level of the collection of coefficients; and after each of the collections of coefficients in the plurality are examined, decreasing the global priority level. Repeating the examining, the encoding, the reducing and the decreasing for the plurality of collections of coefficients, and terminating the examining, the encoding, the reducing, and the decreasing in response to determining that a total amount of bits used is greater than a target bit rate.

    摘要翻译： 一种方法和装置涉及根据多个系数集合的全局编码顺序来检查多个系数集合中的系数的相应集合，各个系数集合具有各自的优先级以及相应的多个编码 对应于编码单位的单位和截断点。 响应于确定所检查的多个系数集合中的系数集合具有等于全局优先级的优先级，根据系数集合的本地编码顺序对第一未编码编码单元进行编码，并减少 系数收集的优先级; 并且在检查了多个系数的每个集合之后，减小了全局优先级。 重复对多个系数集合的检查，编码，减少和减少，并且终止检查，编码，减少和减少以响应于确定使用的总位数大于目标 比特率。

    EFFICIENT RATE ALLOCATION FOR MULTI-RESOLUTION CODING OF DATA
    2.
    发明申请
    EFFICIENT RATE ALLOCATION FOR MULTI-RESOLUTION CODING OF DATA 有权
    数据的多分辨率编码的有效率分配

    公开(公告)号：US20100150463A1

    公开(公告)日：2010-06-17

    申请号：US12638225

    申请日：2009-12-15

    申请人： Yick Ming Yeung ,  Oscar Chi-Lim Au

    发明人： Yick Ming Yeung ,  Oscar Chi-Lim Au

    IPC分类号： G06K9/36

    CPC分类号： H04N19/1883 ,  H04N19/115 ,  H04N19/129 ,  H04N19/132 ,  H04N19/146 ,  H04N19/147 ,  H04N19/184 ,  H04N19/19 ,  H04N19/63 ,  H04N19/647

    摘要： There are disclosed three fast rate control methods that can efficiently reduce or remove the computation and memory usage redundancy over conventional PCRD methods. The first method, called successive bit-plane rate allocation (SBRA), assigns the maximum allowable bit-rate for each bit-plane of each code-block by using the currently available rate-distortion information only. The second method is called priority scanning rate allocation (PSRA). This first predicts the order of magnitude of each truncation point's rate-distortion slope and then encodes the truncation points based on the order (priority) information. The third method uses PSRA to obtain a significantly smaller amount of data than PCRD for optimal truncation and is called priority scanning with optimal truncation (PSOT). SBRA provides the highest computational complexity and memory usage reduction, and the lowest coding/transmission delay. The computational complexity reduction can be up to about 90% of the entropy coding process. However this method gives the lowest PSNR performance of the three. PSRA provides higher PSNR performance than SBRA with the penalty of lower memory usage reduction and higher delay. PSOT provides the best (optimal) quality while it is the least efficient method in term of computational complexity, memory usage and the coding/transmission delay. The three methods provide different degree of computation complexity and memory reduction, coding/transmission delay and PSNR performance. The most suitable rate control method can be chosen based on application requirements.

    摘要翻译： 已经公开了三种快速速率控制方法，其可以有效地减少或消除常规PCRD方法的计算和存储器使用冗余。 称为连续位平面速率分配（SBRA）的第一种方法仅通过使用当前可用的速率失真信息为每个码块的每个位平面分配最大允许比特率。 第二种方法称为优先扫描速率分配（PSRA）。 这首先预测每个截断点的速率 - 失真斜率的数量级，然后根据顺序（优先级）信息对截断点进行编码。 第三种方法使用PSRA获得比PCRD更少的数据量以获得最佳截断，并称为具有最佳截断（PSOT）的优先扫描。 SBRA提供了最高的计算复杂度和内存使用减少，以及最低的编码/传输延迟。 计算复杂度降低可高达熵编码过程的大约90％。 然而，这种方法给出了三种最低的PSNR性能。 PSRA提供比SBRA更高的PSNR性能，同时降低内存使用量的降低和更高的延迟。 PSOT提供最佳（最优）的质量，而在计算复杂度，内存使用和编码/传输延迟方面，PSOT是最不有效的方法。 这三种方法提供了不同程度的计算复杂度和内存缩减，编码/传输延迟和PSNR性能。 最合适的速率控制方法可以根据应用需求进行选择。

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING BASED ON DEEP LEARNING
    4.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING BASED ON DEEP LEARNING 审中-公开

    公开(公告)号：US20240175983A1

    公开(公告)日：2024-05-30

    申请号：US18401681

    申请日：2024-01-01

    申请人： Guozhen Zhu ,  Beibei Wang ,  Weihang Gao ,  Yuqian Hu ,  Chenshu Wu ,  Xiaolu Zeng ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    发明人： Guozhen Zhu ,  Beibei Wang ,  Weihang Gao ,  Yuqian Hu ,  Chenshu Wu ,  Xiaolu Zeng ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC分类号： G01S7/41 ,  G01S13/56

    CPC分类号： G01S7/415 ,  G01S13/56

    摘要： Methods, apparatus and systems for wireless sensing based on deep learning are described. For example, a described method comprises: transmitting a wireless signal through a wireless multipath channel of a venue, wherein the wireless multipath channel is impacted by a motion of an object in the venue; receiving the wireless signal through the wireless multipath channel of the venue, wherein the received wireless signal differs from the transmitted wireless signal due to the wireless multipath channel and the motion of the object; obtaining a time series of channel information (TSCI) of the wireless multipath channel based on the received wireless signal; computing a plurality of autocorrelation functions based on the TSCI, each autocorrelation function (ACF) computed based on CI of the TSCI in a respective sliding time window; constructing at least one ACF vector, wherein each respective ACF vector is a vector associated with a respective ACF comprising multiple vector elements each associated with a respective time lag, each vector element being a value of the respective ACF evaluated at the respective time lag; rearranging the at least one ACF vector into rearranged ACF data, wherein each ACF vector is a one-dimensional (1D) ACF-block; and performing a wireless sensing task based on a task engine to do a processing using the rearranged ACF data as an input.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING
    5.
    发明公开
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS SENSING MEASUREMENT AND REPORTING 审中-公开

    公开(公告)号：US20240129779A1

    公开(公告)日：2024-04-18

    申请号：US18395544

    申请日：2023-12-23

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

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

    IPC分类号： H04W24/10 ,  H04L5/00

    CPC分类号： H04W24/10 ,  H04L5/0051 ,  H04W88/182

    摘要： Methods, apparatus and systems for wireless sensing are described. In one example, a described system in a wireless data communication network comprises: a transmitter configured to transmit a time series of at least one wireless sounding signal (WSS) based on a standard wireless network protocol associated with the wireless data communication network, and a receiver. The wireless data communication network comprises a physical (PHY) layer, a medium access control (MAC) layer, and at least one higher layer. The receiver is configured to: receive the time series of at least one WSS (TSWSS) based on the standard wireless network protocol through a wireless channel of a venue, and perform a plurality of wireless sensing measurements based on the received TSWSS to obtain sensing measurement results based on the standard wireless network protocol. The PHY layer or the MAC layer of the receiver provides the sensing measurement results locally to the at least one higher layer of the receiver based on the standard wireless network protocol. The sensing measurement results are available to the at least one higher layer of the receiver for performing a sensing-based task based on the sensing measurement results.

    Method, apparatus, and system for movement tracking
    6.
    发明授权
    Method, apparatus, and system for movement tracking 有权

    公开(公告)号：US11639981B2

    公开(公告)日：2023-05-02

    申请号：US17492642

    申请日：2021-10-03

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

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

    IPC分类号： G01S7/00 ,  G01S13/00 ,  G01S13/56 ,  G01S7/41 ,  H04W84/18

    摘要： Methods, apparatus and systems for movement tracking are described. In one example, a described system comprises: at least one sensor configured to generate at least one sensing information (SI); a memory; a processor communicatively coupled to the memory and the at least one sensor; and a set of instructions stored in the memory. The set of instructions, when executed by the processor, cause the processor to: obtain at least one time series of SI (TSSI) from the at least one sensor, analyze the at least one TSSI, track a movement of an object in a venue based on the at least one TSSI, compute an incremental distance associated with the movement of the object in a first incremental time period based on the at least one TSSI, compute a direction associated with the movement of the object in a second incremental time period based on the at least one TSSI, and compute a next location of the object at a next time based on at least one of: a current location of the object at a current time, a current orientation of the object at the current time, the incremental distance, the direction, or a map of the venue.

    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS MICRO MOTION MONITORING
    10.
    发明申请
    METHOD, APPARATUS, AND SYSTEM FOR WIRELESS MICRO MOTION MONITORING 有权

    公开(公告)号：US20210311166A1

    公开(公告)日：2021-10-07

    申请号：US17352185

    申请日：2021-06-18

    申请人： Chenshu Wu ,  Beibei Wang ,  Peng Zan ,  Sai Deepika Regani ,  Xiaolu Zeng ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    发明人： Chenshu Wu ,  Beibei Wang ,  Peng Zan ,  Sai Deepika Regani ,  Xiaolu Zeng ,  Hung-Quoc Duc Lai ,  K. J. Ray Liu ,  Oscar Chi-Lim Au

    IPC分类号： G01S7/41 ,  G01S7/00 ,  G01S13/56 ,  G01S5/02 ,  G01S5/06

    摘要： Methods, apparatus and systems for wirelessly monitoring a micro motion of an object are described. In one example, a described system comprises: a transmitter configured for transmitting a first wireless signal through a wireless multipath channel of a venue; a receiver configured for receiving a second wireless signal through the wireless multipath channel; and a processor. The second wireless signal differs from the first wireless signal due to the wireless multipath channel and 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, wherein each channel information (CI) of the TSCI comprises N1 CI components; selecting N2 CI components from the N1 CI components based on a first analysis of the N1 CI components; computing a micro-motion (MM) statistics based on the N2 selected CI components and the first analysis; monitoring the motion of the object based on a second analysis of the MM statistics; performing a task based on the first analysis and the second analysis; and generating a response based on the task, the first analysis and the second analysis.