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169 results about "Category attribute" patented technology

Category attributes are characteristics of a category which can be used to extend webshop search and also for filtering of products in the webshop using facets. To assign category attributes to the category hierarchy click: Product information management > Setup > Categories > Category hierarchies .

Video structured processing method based on target behavior attributes and video structured processing system based on target behavior attributes and storage device

The invention discloses a video structured processing method based on target behavior attributes. The method comprises the steps that the basic attributes of the target are acquired by using a YOLO target detection algorithm; the trajectory information of the detected target is acquired by using a multi-target tracking algorithm; abnormal video frames are extracted by using an abnormal behavior analysis algorithm based on the motion light flow characteristics; the corresponding target category attributes and the target trajectories and other characteristic information are acquired by using themethod according to the meta-data structure constructed by customization; the false detection data existing in the extracted meta-data are corrected by using a weighted judgment method; and the acquired data are uploaded to the rear-end server to be further processed. With application of the mode, the unstructured video data can be converted into the structured data having practical value so thatthe network transmission efficiency of the video monitoring system can be enhanced and the load rate of the rear-end server can be reduced. The invention also provides a real-time processing system based on the target behavior attributes and a real-time processing device based on the target behavior attributes.
Owner:SHENZHEN UNIV

Synthetic aperture radar target identification method based on diagonal subclass judgment analysis

The invention provides a synthetic aperture radar target identification method based on diagonal subclass judgment analysis, which mainly solves the problem that the prior synthetic aperture radar has poor target identification performance. The method comprises the following processes: the self-adapting threshold segmentation, the morphological filtering, the geometric clustering operation and the pretreatment of image enhancement are carried out for an original image; the optimal subclass division to each target after pretreatment is carried out by adopting a two-dimension rapid global K-means clustering algorithm; the diagonal subclass judgment analysis or the diagonal subclass judgment analysis and two-dimension subclass judgment analysis are used for finding out an optimal projection matrix; training and testing images after pretreatment are projected towards the projection matrix to obtain characteristic matrixes of the training and testing images; the Euclidean distance between a testing target and the characteristic matrix of each training target is calculated, and the category attribute of the testing target is determined by adopting a nearest neighbor rule. Simulation experiments show that the invention has the advantages of good effect of inhibiting background clutter, high quality of the target image and low characteristic dimensionality and can be used in a remote sensing system.
Owner:XIAN CETC XIDIAN UNIV RADAR TECH COLLABORATIVE INNOVATION INST CO LTD

Map production method and device based on laser point cloud

The invention discloses a map production method and device based on laser point cloud, and relates to the technical field of computers. A specific embodiment of the method comprises: collecting laserpoint cloud of a target area, and performing semantic analysis on the laser point cloud to determine a category attribute of each point cloud point in the laser point cloud and a serial number of an instance to which the point cloud point belongs; combining the point cloud points with the same category attribute under the same instance number to obtain a point cloud cluster, and determining the shape of the point cloud cluster according to the corresponding relationship between the category attribute and the shape; and determining a vectorization rule corresponding to the shape to perform vectorization processing on the point cloud cluster to obtain a vectorization map of the target area. The laser point cloud acquired in the embodiment has the advantages of multiple angles and multiple positions, the integrity and consistency of an object can be better kept compared with a perspective drawing, and the condition that a small part is shielded can be avoided; and three-dimensional vectorization is carried out on point clouds of different shapes, element types can be enriched, and generation of a three-dimensional high-precision map is completed.
Owner:BEIJING JINGDONG QIANSHITECHNOLOGY CO LTD

Spectrogram feature-based radar target high-resolution distance image identification method

The invention provides a spectrogram feature-based radar target high-resolution distance image identification method for mainly solving the problems of poor identification performance and high memory demand and calculated quantity in the conventional radar aircraft target identification technology. The method comprises the following processes of: preprocessing radar training target distance echo data; extracting spectrogram features from the preprocessed radar training target distance echo data and the radar test target distance; training a multi-task hidden Markov model for the spectrogram features of each frame of the radar training target echo data along the time dimensions of the spectrogram features, determining parameters of the model, and calculating the posterior probability values of the radar test target echo data by using a forward algorithm; and taking the category attribute of the radar training target echo data corresponding to the maximum posterior probability value as the category attribute of the radar test target echo data. The method has the advantages of high identification performance and low memory demand and calculation burden, and can be used for identification of an aircraft target.
Owner:XIAN CETC XIDIAN UNIV RADAR TECH COLLABORATIVE INNOVATION INST CO LTD

Radar target identification method based on label maintaining multitask factor analyzing model

The invention discloses a radar target identification method based on a label maintaining multitask factor analyzing model and mainly solves the problem that the prior art is poor in target identification performance under a small sample condition. The radar target identification method includes the steps of firstly, performing normalization and alignment pretreatment on a radar high range resolution profile; secondly, using the preprocessed high range resolution profile to build a label maintaining multitask factor analyzing model; thirdly, performing Gibbs sampling on the parameters of the model, and saving sampling average of the model parameters; fourthly, performing normalization and alignment pretreatment on a to-be-tested sample; fifthly, calculating the frame probability density function value of the to-be-tested sample according to the sampling average, learned by the training steps, of the parameters of the label maintaining multitask factor analyzing model; sixthly, judging the category attribute of the to-be-tested sample according to the frame probability density function value. The radar target identification method has the advantages that supervised learning of the model is achieved, the identification performance under the small sample condition is increased, and the method is applicable to the radar target identification under the small sample condition.
Owner:XIDIAN UNIV +1

Per-pixel classification-based remote sensing image scene classification and extraction method

PendingCN108399366ALower feature intervalAvoid Numerical InstabilityScene recognitionNeural architecturesCategory attributeHistogram
The invention discloses a remote sensing image scene classification system. The system comprises an acquisition step, a grayscale processor, a fitting step, an edge detection step, a remote sensing image pixel classification step and a neural network trainer, wherein the acquisition step is used for acquiring original remote sensing images and transmitting the original remote sensing images to thegrayscale processor as samples; the grayscale processor is used for carrying out grayscale processing on the original remote sensing images transmitted in the acquisition step by adoption of a component method; the fitting step is used for fitting a grayscale histogram by adoption of a low-order spline function; the edge detection step is used for finding zero cross points, obtained by the images, of second derivatives by adoption of a zero cross-based method, so as to position edges; the remote sensing pixel classification step is used for judging surface feature category attributes expressed by pixels by adoption of pixel-based classification and carrying out classification to obtain a classified thematic map; and the neural network trainer is used for inputting the images into a convolutional neural network model to carry out training, so as to obtain a classification results, achieving requirement precision, of remote sensing image scenes. The system is high in classification correctness.
Owner:何德珍

Crowd type identification method based on mobile phone signaling data

The invention discloses a crowd type identification method based on the mobile phone signaling data, and belongs to the technical field of the crowd type identification. According to the method, the mobile phone signaling data and the basic attribute information of the mobile phone users are combined, and the crowd travel related characteristics are mined and extracted. The method comprises the following steps of calculating the total distance entropy among all samples, and sorting all features according to the importance degree by utilizing a backward elimination method so as to select the features; and based on the screened features, performing clustering analysis on the mobile phone signaling data by utilizing a k-means clustering method, and dividing the clustering clusters; and performing the crowd type identification on each clustering cluster in combination with the distribution condition of each crowd in the corresponding feature. Compared with the prior art, the method has the advantages that the information in the mobile phone signaling data can be more fully mined, and the category attributes of the crowd are analyzed from the global perspective by utilizing a machine learning method, the dependence and requirements on the priori experience knowledge are reduced, the applicability of the method is improved, and the subjectivity brought by a rule discrimination method can be avoided.
Owner:NANJING RUIQI INTELLIGENT TRANSPORTATION TECH IND RES INST CO LTD

Radar range profile statistics and recognition method based on FA model in strong noise background

The invention discloses a radar range profile statistics and recognition method based on a FA model in the strong noise background, which relates to the technical field of radar automatic target recognition and mainly solves the problem that the current statistics and recognition methods based on the FA model are not robust to noises. The training phase comprises the following steps: framing, translating, aligning and strength-normalizing radar HPPR continuously, learning the parameters of each azimuth frame of the FA model by adopting the processed HRRP and storing a template. The test phase comprises the following steps: first strength-normalizing, translating and aligning the samples to be tested and then estimating the range of the signal-to-noise ratios (SNR) of the samples; computing the distance value of each frame of each target and deciding the category attribute if the SNR is more than 30dB, and rewriting the distance value, solving the noise energy under SNR condition by minimizing the distance value, finally computing the distance value of each frame of each target and deciding the category attribute if the SNR is less than 30dB. The method has the advantages of robustness to noises and less computation and is applied to identifying radar targets.
Owner:XIAN CETC XIDIAN UNIV RADAR TECH COLLABORATIVE INNOVATION INST CO LTD

Network construction management and control method and platform based on big data analysis

The invention relates to a network construction management and control method and platform based on big data analysis. The method comprises the following steps that: receiving data information input by a user, and storing the data information in a database of a corresponding data interface according to the category attribute of the data information; receiving a data analysis instruction sent from a data analysis processor, wherein the data analysis instruction comprises data interface identification; according to the interface identification, determining the data information in a called interface; and according to a preset algorithm, generating statistical data, and storing the statistical data in the corresponding data analysis processor which sends the data analysis instruction. The method also comprises the following steps that: receiving a functional assessment instruction, wherein the functional assessment instruction comprises the identification of the data analysis processor; and according to the identification of the data analysis processor, determining the called statistical data in the data analysis processor, and generating a functional assessment result. By use of the method, the mutual calling of various classes of data information is realized, data resources are fully utilized, big data analysis is realized on the basis of the comprehensive utilization of a plurality of database resources, the big data analysis is realized, and the accuracy of the functional assessment result is guaranteed.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
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