Method and device for extracting skeleton from point cloud
    41.
    发明授权
    Method and device for extracting skeleton from point cloud 有权
    从点云提取骨架的方法和装置

    公开(公告)号:US09390552B1

    公开(公告)日:2016-07-12

    申请号:US14378976

    申请日:2013-09-13

    CPC classification number: G06T17/00 G06T2210/56

    Abstract: A method for extracting a skeleton form a point cloud includes: obtaining inputted point cloud sampling data; contracting the point cloud using an iterative formula and obtaining skeleton branches, the iterative formula is: arg ⁢ ⁢ min X ⁢ ∑ i ∈ I = ⁢ ∑ j ∈ J ⁢  x i - q i  ⁢ θ ⁡ (  x j - q j  ) + R ⁡ ( X ) , wherein R ⁡ ( X ) = ∑ i ∈ I ⁢ γ i ⁢ ∑ i ′ ∈ I / { i } ⁢ θ ⁡ (  x i - x i ′  ) σ i ⁢  x i - x i ′  , θ ⁡ ( r ) = ⅇ 4 ⁢ ⁢ r 2 h 2 , wherein J represents a point set of the point cloud sampling data, q represents the sampling points in the point set J, I represents a neighborhood point set of the sampling points q, x represents the neighborhood points in the neighborhood point set I. R is a regular term, γ is a weighting coefficient, h is a neighborhood radius of the neighborhood point set I, and σ is a distribution coefficient; and connecting the skeleton branches and obtaining a point cloud skeleton.

    Abstract translation: 一种用于从点云提取骨架的方法包括:获得输入的点云采样数据; 使用迭代公式收集点云并获得骨架分支,迭代公式为:arg·peng minXΣi∈I =Σj∈Jx i-q iㄧ ⁡(x j-q j)+ R⁡(X)其中R⁡(X)=Σi∈IγiΣi'∈I / {i}&thetas; ⁡(x i - x i')&sgr ix i - x i',&thetas; ⁡(r)=ⅇ4⁢r 2 h 2,其中J表示点云采样数据的点集,q表示点集合J中的采样点,I表示采样点q的邻域点集, x表示邻域点集合I中的邻域点.R是常规项,γ是加权系数,h是邻域点集I的邻域半径,&sgr; 是分布系数; 并连接骨架分支并获得点云骨架。

    Multi-sensor indoor localization method and device based on light intensity
    42.
    发明授权
    Multi-sensor indoor localization method and device based on light intensity 有权
    多传感器室内定位方法和基于光强度的装置

    公开(公告)号:US09360310B2

    公开(公告)日:2016-06-07

    申请号:US14087162

    申请日:2013-11-22

    CPC classification number: G01B21/00 G01B7/00 G01B11/00 G01S5/16 G01V8/20

    Abstract: The present disclosure relates to a multi-sensor indoor localization method and device. The method includes: an optical signal is received from a point light source using an optical sensor group having N optical sensors; the light intensity of the optical signal is obtained, the optical sensor group includes a polyhedron-shaped base where the normal vectors of each three faces are linearly independent, the N optical sensors are located on the faces of the base, and N≧6; the current heading is obtained by a magnetic sensor group; a current unit normal vector is obtained; a system of at least three equations is established; the system of equations is solved to obtain an approximate solution of minimum residual, the approximate solution is regarded as the coordinates of the optical sensor group.

    Abstract translation: 本发明涉及多传感器室内定位方法和装置。 该方法包括:使用具有N个光学传感器的光学传感器组从点光源接收光信号; 获得光信号的光强度,光传感器组包括三面体的法线向线性独立的多面体基座,N个光学传感器位于基体的面上,N≥6; 当前航向由磁传感器组获得; 获得当前单位法向量; 建立至少三个方程的系统; 求解方程组得到最小残差的近似解,将近似解作为光传感器组的坐标。

    CHEMICAL SHIFT CODED IMAGING METHOD BASED ON TRANSITION REGION AND REGIONAL ITERATIVE PHASOR EXTRACTION

    公开(公告)号:US20250148746A1

    公开(公告)日:2025-05-08

    申请号:US19019221

    申请日:2025-01-13

    Abstract: The present disclosure discloses a chemical shift coded imaging method based on a transition region and regional iterative phasor extraction. Acquiring an initial image, and determining an initial phasor solution of the transition region based on the initial image; performing regional iterative phasor extraction in at least two set directions by taking the initial phasor solution as initial information, and obtaining a target phasor solution based on a regional iterative phasor extraction result corresponding to each set direction; and determining a first chemical composition signal and a second chemical composition signal based on the target phasor solution, and performing chemical shift coded imaging based on the first chemical composition signal and/or the second chemical composition signal. By means of regional iterative phasor extraction in a plurality of dimensions, wrong phasor information is transferred independently along different dimensions, wrong information transferred in different directions is excluded.

    Ultrasonic wake-up system
    44.
    发明授权

    公开(公告)号:US12257458B2

    公开(公告)日:2025-03-25

    申请号:US18325982

    申请日:2023-05-30

    Abstract: The present application provides an ultrasonic wake-up system. The system includes an ultrasonic imaging device, an ultrasound stimulation device, and an ultrasound stimulation effect evaluation device, and acquires an ultrasonic image of a target object through the ultrasonic imaging device, transmits an ultrasound to the target object based on the ultrasonic image through the ultrasound stimulation device, and adjusts the transmitted ultrasound required through the ultrasound stimulation effect evaluation device. Therefore, peripheral nerves are accurately stimulated, an uplink reticular wake-up system is activated, so as to wake up patients with disorders of consciousness.

    DATA ERROR CORRECTION METHOD AND APPARATUS, AND ELECTRONIC DEVICE

    公开(公告)号:US20240419897A1

    公开(公告)日:2024-12-19

    申请号:US18673562

    申请日:2024-05-24

    Abstract: The present application is suitable for the technical field of data processing, and provides a data error correction method and apparatus and an electronic device. The method includes: decoding a base sequence to be subjected to error correction into a first text, the base sequence to be subjected to error correction being composed of a plurality of bases; performing word segmentation on the first text to obtain a plurality of text units; performing error detection on the plurality of text units to obtain a text unit having an error; and performing error correction on the base sequence to be subjected to error correction according to the text unit having the error. By means of the above method, error correction for data can be achieved, and the storage cost of DNA can also be reduced.

    ALZHEIMER'S DISEASE BIOMARKER, AND SCREENING METHOD THEREFOR AND APPLICATION THEREOF

    公开(公告)号:US20240369583A1

    公开(公告)日:2024-11-07

    申请号:US18689508

    申请日:2021-09-16

    Abstract: An Alzheimer's disease biomarker, and a screening method therefor and use thereof. The Alzheimer's disease biomarker is 11(Z), 14(Z)-eicosadienoic acid. The screening method for the Alzheimer's disease biomarker comprises: acquiring samples, testing the samples, and performing structural identification and data analysis on metabolites in the samples, wherein specifically, metabolites in faeces samples can be tested by liquid chromatography-mass spectrometry, to carry out structural identification on the metabolites; and selecting a metabolite showing a difference from the metabolite level of a control group as the Alzheimer's disease biomarker. Using 11(Z), 14(Z)-eicosadienoic acid as an Alzheimer's disease biomarker is of great significance to clinical early diagnosis of Alzheimer's disease; the present invention can be used for preparing a diagnostic tool for Alzheimer's disease, predicting the individual treatment effects of patients with Alzheimer's disease, and preparing drugs for treating Alzheimer's disease.

Patent Agency Ranking