-
公开(公告)号：US20170084080A1
公开(公告)日：2017-03-23
申请号：US15371148
申请日：2016-12-06
Inventor： Hui Huang , Kangxue Yin , Daniel COHEN-OR
CPC classification number: G06T17/10 , G06T17/30 , G06T2210/56
Abstract: A method for reconstructing surface from a point cloud includes following steps: (a) extracting skeletal curves from an input point cloud; (b) editing the extracted skeletal curves, and assigning sweeping path; (c) obtaining sliced point clouds along the edited skeletal curves, and fitting a closed NURBS curve according to the sliced point clouds; (d) reconstructing the point cloud to get generalized cylinders along the assigned sweeping path, according to the closed NURBS curves; (e) merging the generalized cylinders into a single surface, and smoothing intersections of the generalized cylinders so as to reconstruct surface from the point cloud. The invention further relates to a system for reconstructing surface from a point cloud. The invention can reconstruct the surface with high accuracy by the minimum interactions, and can deal with point cloud data having missing region caused by occlusion. In addition, the invention can achieve high reconstruction quality and fine controllability.
-
公开(公告)号：US20160370444A1
公开(公告)日：2016-12-22
申请号：US15103845
申请日：2014-12-05
Inventor： Xi PENG , Dong LIANG , Xin LIU , Hairong ZHENG
IPC: G01R33/50 , G01R33/561 , G01R33/56
CPC classification number: G01R33/561 , G01R33/50 , G01R33/5608 , G01R33/5611
Abstract: Disclosed is a magnetic resonance rapid parameter imaging method and system. The method comprises: obtaining a target undersampled magnetic resonance signal (S10); obtaining prior information of a parameter model (S20); performing sequence reconstruction of a target image according to the undersampled magnetic resonance signal and the prior information to obtain a target image sequence (S30); and substituting the target image sequence into the parameter estimation model to obtain object parameters and to generate parametric images (S40).
Abstract translation: 公开了一种磁共振快速参数成像方法和系统。 该方法包括：获得目标欠采样磁共振信号（S10）; 获取参数模型的先验信息（S20）; 根据欠采样的磁共振信号和先验信息执行目标图像的序列重构以获得目标图像序列（S30）; 并且将目标图像序列代入参数估计模型以获得对象参数并生成参数图像（S40）。
-
73.发明申请公开(公告)号：US20160125226A1
公开(公告)日：2016-05-05
申请号：US14893035
申请日：2013-11-26
Inventor： Hui HUANG
CPC classification number: G06K9/00214 , G06K9/00201 , G06K9/209 , G06K9/40 , G06K9/56 , G06K9/6207 , G06K9/6211 , G06K9/6249 , G06T5/002 , G06T15/10 , G06T19/00 , G06T19/20 , G06T2207/10028 , G06T2210/56
Abstract: Disclosed is a method for automatically optimizing point cloud data quality, including the following steps of: acquiring initial point cloud data for a target to be reconstructed, to obtain an initial discrete point cloud; performing preliminary data cleaning on the obtained initial discrete point cloud to obtain a Locally Optimal Projection operator (LOP) sampling model; obtaining a Possion reconstruction point cloud model by using a Possion surface reconstruction method on the obtained initial discrete point cloud; performing iterative closest point algorithm registration on the obtained Possion reconstruction point cloud model and the obtained initial discrete point cloud; and for each point on a currently registered model, calculating a weight of a surrounding point within a certain radius distance region of a position corresponding to the point for the point on the obtained LOP sampling model, and comparing the weight with a threshold, to determine whether a region where the point is located requires repeated scanning. Further disclosed is a system for automatically optimizing point cloud data quality.
Abstract translation: 公开了一种自动优化点云数据质量的方法，包括以下步骤：获取要重建的目标的初始点云数据，以获得初始离散点云; 对获得的初始离散点云执行初步数据清理，以获得本地最优投影算子（LOP）采样模型; 通过在获得的初始离散点云上使用权重表面重建方法获得权重重点云模型; 对获得的电位重建点云模型和获得的初始离散点云进行迭代最近点算法注册; 并且对于当前注册的模型中的每个点，计算与所获取的LOP采样模型上的点的点对应的位置的某个半径距离区域内的周围点的权重，并将权重与阈值进行比较，以确定 该点所在的区域是否需要重复扫描。 进一步公开了一种用于自动优化点云数据质量的系统。
-
公开(公告)号：US20150379350A1
公开(公告)日：2015-12-31
申请号：US14765806
申请日：2013-09-13
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Yangyan LI , Baoquan CHEN , Xiaochen FAN
CPC classification number: G06K9/00657 , A01G22/00 , G06K9/00201 , G06T7/143 , G06T7/162 , G06T7/174 , G06T2207/10028 , G09B9/00
Abstract: Disclosed are a method and system for dividing a plant organ point cloud. According to information about lamina point cloud blocks and stem point cloud blocks in a previous adjacent point cloud frame of a point cloud frame to be divided and a flatness feature of a data point of the point cloud frame to be divided, a point cloud of the point cloud frame to be divided is divided into lamina point cloud blocks and stem point cloud blocks; taking the adjacent point cloud frame as a reference to divide the point cloud frame facilitates the divided organ in maintaining the consistency of time and space between adjacent point cloud frames, and improves the accuracy of plant organ division. When a new lamina point cloud block or a stem point cloud block is discovered, the point cloud in the point cloud frame before the point cloud block to be divided is redivided through tracking back; when redividing, according to information about the lamina point cloud blocks and the stem point cloud blocks in the next adjacent point cloud frame, the point cloud frame to be redivided is divided; and the redivision during tracking back facilitates extracting, from the point cloud frame, a new lamina point cloud block or a stem point cloud block which was not discovered in the previous division process, thereby further improving the accuracy of plant organ division.
Abstract translation: 公开了一种用于分割植物器官点云的方法和系统。 根据要分割的点云帧的先前相邻点云帧中的层点点云块和茎点云块的信息，以及要分割的点云帧的数据点的平坦度特征， 要分割的云点分为层点云块和茎点云块; 以相邻点云框为参照，划分点云框架，有助于分割的机关保持相邻点云帧之间的时间和空间的一致性，提高植物器官分裂的准确性。 当发现新的层点云块或茎点云块时，要点划分的点云块之前的点云将通过跟踪重新分割; 当重新划分时，根据下一相邻点云框中的层点云块和茎点云块的信息，待分割的点云帧被划分; 而跟踪回溯期间的重新划分有利于从点云框架中提取新的层点云块或茎点云块，这在以前的划分过程中未被发现，从而进一步提高了植物器官分裂的准确性。
-
公开(公告)号：US20150363906A1
公开(公告)日：2015-12-17
申请号：US14765447
申请日：2013-09-13
Inventor： Hui HUANG , Kangxue Yin , Minglun Gong , Baoquan Chen , Yunhai Wang
CPC classification number: G06T3/0081 , G06T7/33 , G06T2207/20021
Abstract: Provided are an image restoration method and device. The method comprises: processing image blocks, which are initially registered, to acquire connection curves among the image blocks; constructing an ambient field of images to be restored by means of the connection curve; by minimizing energy of the connection curve in the ambient field, registering the image blocks; and performing image filling on the registered image blocks to acquire a restored image. The device comprises: a processing unit used for processing the image blocks, which are initially registered, to acquire the connection curve among the image blocks; an ambient field construction unit used for constructing the ambient field of the image to be restored by means of the connection curve; a registering unit used for registering the image blocks by minimizing the energy of the connection curve in the ambient field; and a filling unit used for performing image filling on the registered image blocks to acquire the restored image. The present invention can be applied to restore any damaged image and improve the accuracy.
Abstract translation: 提供了一种图像恢复方法和装置。 该方法包括：处理最初登录的图像块，以获取图像块之间的连接曲线; 通过连接曲线构建要恢复的图像的环境场; 通过最小化环境场中的连接曲线的能量，登记图像块; 并对所登记的图像块执行图像填充以获得恢复的图像。 该装置包括：用于处理最初登记的图像块的处理单元，用于获取图像块中的连接曲线; 用于通过连接曲线构造要恢复的图像的环境场的环境场结构单元; 登记单元，用于通过使环境场中的连接曲线的能量最小化来登记图像块; 以及填充单元，用于对登记的图像块执行图像填充以获取恢复的图像。 本发明可以应用于恢复任何损坏的图像并提高精度。
-
Patent Agency Ranking
76.发明授权公开(公告)号：US12258656B2
公开(公告)日：2025-03-25
申请号：US16624542
申请日：2019-09-30
Inventor： Guomin Wang , Huaiyu Wang , Kimho Paul Chu
Abstract: The present invention relates to a magnesium alloy material, which is an in situ magnesium hydroxide nanosheet layer modified magnesium alloy. The material is prepared from a magnesium alloy through a hydrothermal reaction under alkaline condition. The protective effect of the in situ formed magnesium hydroxide nanosheet layer structure results in remarkably enhanced corrosion resistance of the magnesium alloy, meanwhile the biocompatibility can also be significantly improved since the release rate of magnesium ion can be significantly reduced. In addition, the two-dimensional nanolayer structure has a non-releasing physical antibacterial property depending on contact. Therefore, the magnesium alloy material according to the present invention has an extremely great application prospect in the field of medical implant.
-
77.发明申请公开(公告)号：US20250038393A1
公开(公告)日：2025-01-30
申请号：US18911015
申请日：2024-10-09
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Hairong ZHENG , Xinwei RONG , Ye LI , Jiasheng WANG , Jifeng CHEN , Xing YANG
Abstract: The invention relates to a directional coupler, coupling high power and low power is used to replace existing two high-power directional couplers, thus reducing the cost and reducing the insertion loss of high-power radio frequency channels. The directional coupler cooperates with a control conditioning board, a splitter, a multi-path radio frequency power amplifier and a combiner to form the radio frequency power amplifier system, and the system is connected to a spectrometer; on one hand, by using a standard signal output by the spectrometer and a feedback signal of the directional coupler, nonlinearity caused by the power amplifier is corrected to achieve magnet-free linear radio frequency power amplification and anomaly protection; and on the other hand, the spectrometer can be used for monitoring the output power of the directional coupler and monitoring antenna matching, so as to provide dual protection for the radio frequency power amplifier system.
-
公开(公告)号：US20240368588A1
公开(公告)日：2024-11-07
申请号：US18621103
申请日：2024-03-29
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY , SHENZHEN INSTITUTE OF ADVANCED TECHNOLOGY CHINESE ACADEMY OF SCIENCES
Inventor： Yuting CHEN
IPC: C12N15/11 , C12N9/22 , C12N15/85 , C12Q1/6874
Abstract: A method for high-throughput TAG to TAA conversion on the genome are provided. The method comprises the following steps: co-transfecting a gRNA array pool or a transcription product thereof, a plasmid containing an mCherry-inactivated eGFP reporter molecule and an sgRNA plasmid for editing and activating eGFP in a stable cell of an inducible base editor; or by transfecting an 43-all-in-one expression vector or a transcription product thereof to cells with stable inducible base editor, high-flux TAG to TAA conversion in single cells is realized, and through multiple cyclic operations, almost all TAG to TAA conversion in the whole genome of cells of common model organisms can be realized.
-
公开(公告)号：US20240365760A1
公开(公告)日：2024-11-07
申请号：US18650088
申请日：2024-04-30
IPC: A01K67/0276 , C12Q1/686 , C12Q1/6883
Abstract: Provided are a transgenic animal model, a method for constructing same, and use thereof. An Axin1flox/flox transgenic mouse is used to mate with an Agc1-CreER transgenic mouse to produce an Axin1+Agc1ER condition knockout mouse. Then by means of tamoxifen induction, the Axin1 expression in the Axin1+Agc1ER condition knockout mouse is down-regulated, and a disease combined model with the pathological characteristics of “growth plate chondrocyte hypertrophy, heterotopic ossification and articular cartilage degeneration of knee joints” is successfully established. The model is similar to clinically related pathological features, and can be used for systematically studying the pathogenesis of growth plate chondrocyte hypertrophy, heterotopic ossification and osteoarthritis and further screening for drugs for treating related diseases.
-
公开(公告)号：US12121897B2
公开(公告)日：2024-10-22
申请号：US16769103
申请日：2018-12-21
Applicant: SHENZHEN INSTITUTES OF ADVANCED TECHNOLOGY
Inventor： Hairong Zheng , Fei Li , Feiyan Cai , Long Meng , Yang Xiao , Fei Yan
CPC classification number: B01L3/502753 , B06B1/06 , B01L2400/0409 , B01L2400/0436 , B82Y35/00
Abstract: A microfluidic system, including: a container, an ultrasound transmitter assembly, and a phononic crystal plate. The container is configured to accommodate a solution containing microparticles. The ultrasound transmitter assembly is configured to transmit ultrasonic waves to the phononic crystal plate, where the ultrasonic waves have a frequency which is the same as a resonance frequency of the phononic crystal plate. The phononic crystal plate is placed in the solution, and configured to generate a local acoustic field on a surface of the phononic crystal plate under excitation of the ultrasonic waves, and induce an acoustic microstreaming vortex to generate an acoustic streaming shear stress on the microparticles. The phononic crystal plate defines therein cavities, the respective cavities are arranged periodically in the phononic crystal plate, and all the respective cavities are filled with gas.
-
-
-
-
-
-
-
-
-
Search Results
337
records
(took 0.031 seconds)
