140results about How to "Automatic extraction" patented technology

The invention discloses an automatic segmentation method for a point cloud of a facade of a large scene city building. The method comprises steps of (1) performing fusion registration on airborne LiDAR point cloud data and on-vehicle LiDAR point cloud data, (2) extracting airborn LiDAR building point cloud data from the airborne LiDAR point cloud data which goes through registration in the step (1), (3) performing segmentation on the point cloud data of a single building based on the airborne LiDAR point cloud data extracted from the step (2), (4) performing contour tracking on the single building segmented by the step (3), (5) performing simplification and normalization processing on a contour line extracted from the step (4), (6) performing rough segmentation on the point cloud of the facade of the building based on the contour line which goes through the simplification and normalization processing in the step (5), and (7) performing fine segmentation on the building facade point cloud which is roughly segmented in the step (6). The automatic segmentation method of the invention can fast and accurately separate the building facade point cloud from the on-vehicle LiDAR point cloud.

The invention discloses an extraction method of a monocular image depth map based on foreground and background fusion, and belongs to the three-dimensional image reconstruction field of the computer vision. The method of the invention comprises the following steps: step A, a non-parametric machine learning method is used to extract a foreground depth map from an original monocular image; step B, a linear perspective method is used to estimate a background depth map with an integral distribution trend in the original monocular image; step C, the foreground depth map and the background depth map of the original monocular image perform global integration, so as to get a final depth map of the original monocular image. Compared with the prior art, the extraction method of the monocular image depth map based on the foreground and background fusion does not need to compute the camera parameter, is low in computational complexity, and is simple and practicable.

The invention discloses an automatic webpage table data extraction method and device. The method includes: acquiring Table-label-containing webpage content, and analyzing the webpage content into a DOM tree structure; subjecting Table-label-containing table data in the DOM tree structure to layering, and screening layer by layer until processing-requiring table data are obtained; adopting a maximum tr number and td number of the processing-requiring table data to create a table matrix, subjecting the processing-requiring table data to traversal, and inserting the table data and redundant datainto the table matrix to form a new table matrix; reading the new table matrix line by line to obtain a header type and a body starting position; writing data of the new table matrix into a database by adoption of the header type and the body starting position. By the automatic webpage table data extraction method, problems of multiple table label nesting and merge cell containing complicated webtable data extraction are solved, the table data can be extracted quickly and accurately, and high practical value is achieved.

The invention relates to a method for extracting the text information in a new webpage, belonging to the field of webpage information analyzing and processing technique. The existing technique ordinarily adopts a packer to extract the interesting data from the web pages and the obtaining of information mode recognition knowledge of the packer is a time-taking and laborious, higher intelligence-demanding operation. The invention uses a stack data structure to convert the hiberarchy information of webpage data into vectors, constructs and analyzes Html tree, then making compression on the data of various layers of the Html tree, making data filtration, thinning, recognition and recombination to extract the needed data information. The invention is applied to extracting the template-generated news information in the news web pages from a fixed website.

The invention provides an electronic tag data filtering method used for a radio frequency identification middleware. The middleware sequentially filters according to the source, type, coding range, behavior type and entity attribute of an electronic tag. The method comprehensively considers the attribute, behavior information and EPC network information of the tag, greatly reduces the redundant data and realizes the efficient screening of data.

The invention discloses a road extracting method based on shape characteristics of roads of remote sensing images. The road extracting method comprises the following steps: firstly, segmenting partial regions of preprocessed remote sensing images by utilizing the characteristics of consistency of partial gray levels of road surfaces and the large difference of the partial gray levels between a target region and a background; then, combining segmented results with area and the shape characteristics of a Ferret Box minimum external connection rectangle so as to obtain linear and curved road sections, performing regional seed growth on confirmed roads, and connecting large parts of road sections so as to realize the extraction of road information. Compared with the prior art, the road extracting method disclosed by the invention has the effects that not only the linear and curved road sections can be obtained, but also seed points can be automatically extracted, and road nets can be automatically obtained; the extraction of roads cannot be influenced by the rotation of images, the defect that most methods only can extract linear road sections is overcome, and the road extracting method is more intelligent.

The invention discloses an automatic generation method for an HTTP (Hyper Text Transport Protocol) network feature code. The method comprises the following steps: a pack feature code generation step, a URI (Uniform Resource Identifier) feature code generation step and an HTTP network feature code total set generation step, wherein the pack feature code generation step comprises the following steps: extracting feature statistics and pack content aiming at a plurality of network samples in a manner of asking and answering interchangeably; generating a coarseness cluster set by secondary clustering so as to generate a fineness cluster set on the basis of the coarseness cluster set by the secondary clustering; generating an asking and answering pack feature code set of the network samples by the fineness cluster set; the URI feature code generation step comprises the following steps: dividing flow of the network samples into single one type of flow and carrying out supplementary extraction of a URI path and parameter feature codes to generate a URI feature code set; finally, combining the asking and answering pack feature code set and the URI feature code set to generate a feature code total set Tall.

A combined navigation method based on an INS (inertial navigation system)/GPS (global position system)/SAR (synthetic aperture radar) comprises steps as follows: an INS receiver, a GPS receiver and an SAR sensor are mounted in appropriate positions of an unmanned aerial vehicle in parallel; image matching is performed, and position navigation deviation of the INS is obtained and taken as an observed quantity to be input into a filter, and the observed quantity and other observed quantities are jointly filtered; GPS measuring deviation is obtained and taken as an observed quantity to be input into the filter, and the observed quantity and other observed quantities are jointly filtered; the filter integrates the measuring deviation from the GPS and the position navigation deviation, obtained through image matching, from the INS, and a navigation error estimated value is calculated. Topographic features are automatically and reliably extracted from an SAR image, a map image is formed in a digital map, and the SAR topographic features are automatically predicted; topographic deviation is accurately estimated and integrated; capture and matching are automatically initialized; the fault tolerance capability, the autonomy and the reliability of navigation are high.

The invention relates to medical image processing, and aims to provide a fully-automatic three-dimensional liver segmentation method based on local apriori information and convex optimization. The fully-automatic three-dimensional liver segmentation method based on the local apriori information and the convex optimization comprises the following steps: processing abdominal liver CTA volume data by utilizing a trained three-dimensional convolutional neural network, and then obtaining an aprior probability graph of a liver; obtaining an initial region of the liver from the aprior probability graph of the liver; determining probabilities of various pixel points, belonging to a foreground liver and a background, in an image; optimizing a new energy model by utilizing a convex optimization technology, and segmenting the liver; and performing post-processing, and then obtaining a contour of the liver. The method obtains a segment result. The method can overcome problems of under segmentation and inaccurate boundaries, which exist in an original liver segmentation by utilizing a convolutional neural network, well, and then can obtain an accurate segmentation result.

The invention discloses a joint center extracting method of a three-dimensional human model , comprising the following steps: the surface grid information of the three-dimensional human model is imported, by which a characteristic point of a tail-end of the three-dimensional human model is extracted; on the basis of the characteristic point of the tail-end, the limbs of the three-dimensional human model are divided; and an approximate direction of each limb in the three-dimensional human model is computed; a group of parallel planes perpendicular to the approximate direction of the limb is used for intercepting the three-dimensional human model to get a sectional profile group; a circularity function of the sectional profile group is computed to get a group of circularity function sequences; a local minimum of the circularity function sequence is computed, by which a deformed profile in the profile group is determined; a profile center of gravity of the deformed profile is computed and taken as the joint center of a relevant position of the three-dimensional human model. The joint center extracting method provided by the invention can be used in the three-dimensional human model with an arbitrary posture, of which the extraction precision of the joint center is comparatively high.

The invention provides a device and a method for extracting a form from a portable electronic document. The device for extracting the form comprises a command acquiring unit, a line extracting unit and a form extracting unit, wherein the command acquiring unit is used for analyzing the content of the portable electronic document so as to acquire commands related to the form; the line extracting unit is used for extracting lines and the positions of the lines by processing the commands; and the form extracting unit is used for analyzing the position relation of the lines to extract the form. The device and the method can be used for automatically extracting the form from the portable electronic document.

The invention discloses a method for estimating air particulate pollution degree based on shallow convolution neural network. The basic steps of the method include: 1. Constructing a shallow convolution neural network (PMIE) model with a layer enhancement function; 2. Combining the output of PMIE model with four kinds of weather eigenvalues to construct regression model; 3. Trainning PMIE model and regression model; 4. The PM2.5 index of the test set image is estimated by using the trained PMIE model and regression model. The invention provides a shallow convolution neural network model with layer enhancement function, Combining the output results with four kinds of weather features to estimate the degree of air particulate pollution in the image, the problem caused by feature extraction and feature optimization is effectively avoided, and the specific PM2.5 index value is obtained, which improves the training convergence speed and algorithm robustness, and has better performance.

The invention discloses an adhesive tape sticking device, which comprises a rack, a carrier turntable instrument, an adhesive tape feeder, an adhesive tape sticking instrument, a component discharge instrument and a controller. Specifically, the adhesive tape feeder is used for adhesive tape feeding, the adhesive tape sticking instrument is disposed at the adhesive tape discharge end of the adhesive tape feeder, and a suction nozzle on the adhesive tape sticking instrument can suck an adhesive tape. The carrier turntable instrument is located on the rack, and can convey the carrier thereon to the place right below the suction nozzle so as to stick the adhesive tape by the suction nozzle. The component discharge instrument can send the carrier of an adhesive tape sticked product into a discharge flow channel for discharge. And the controller controls the work of each component. The adhesive tape sticking device provided by the invention realizes automatic peeling and sticking of adhesive tapes and automatic receiving of sticked products, achieves full automatic work, and has no need for manual operation. The adhesive tape sticking speed is fast, and the sticked adhesive tapes are accurate in positions and are firm. Manpower and space are saved, the production efficiency is improved, and production cost is reduced.

Disclosed is a quick and accurate detecting dental arch on a three-dimensional mesh dental model, belonging to the field of computer aided f. The method includes five steps, simple human-computer interactive confirmation of an occlusal plane, sifting initial reference point, fitting an initial dental arch, extracting the final reference point and fitting the final dental arch. The method of the invention only needs simple human-computer interactive operation which helps achieve high degree of automation and avoid the general complex computation; linear computation which is mainly used in the invention can detect dental arch on the three-dimensional dental model quickly, steadily and precisely, valued in application in the field of computer aided orthodontic aesthetics.

The invention provides a method and device for automatically extracting cotton seeds. The method comprises the following steps of: step one, using green plants and soil color characteristics to carry out background segmentation on colorful images in a cotton seed field; step two, using position characteristics of cotton seed line spacing to carry out cotton seed belt location on the green plants obtained by the background segmentation; step three, using position characteristics of cotton seed row spacing to carry out single-plant cotton seed location and plant counting on the located cotton seed belts; and step four, using shape characteristics of the cotton seeds and weeds to extract the single-plant cotton seeds to obtain a cotton seed image in the field in accordance with the plant number of the cotton seeds. According to the method and device, the quick and automatic extraction of the cotton seeds with high recognition rate can be realized.

The invention relates to the field of medical image processing, in particular to a urine visible component recognition method based on an improved Alexnet model. The method comprises the following steps: 1, acquiring and expanding an image data set, and constructing a urinary sediment image training set and a test set; 2, constructing a urine visible component recognition network model based on anAlexnet network model; 3, setting training parameters of the urine visible component recognition network model; 4, training a urine visible component recognition network model based on an Alexnet network model; 5, testing a urine visible component recognition network model based on the Alexnet network model. The method is improved on the basis of an Alexnet network model and reduces the number ofnetwork training parameters. The method can automatically extract image features, has the characteristics of high recognition rate, short recognition time and strong generalization ability, and has important application prospects for assisting medical diagnosis and reducing the burden of doctors.

The invention relates to a code function taste detection method based on deep semantics, and belongs to the technical field of automatic software reconstruction. The method comprises the following steps: extracting semantic features and digital features in text information and structured information, including model training and model testing. The model training comprises code function representation A, structured feature extraction A and code taste classification A, wherein code function representation B, structured feature extraction B and code taste classification B are included. The code function representation A and the code function representation B are code function representations based on an attention mechanism and an LSTM neural network, wherein the structured feature extractionA and the structured feature extraction B are structured feature extraction based on a convolutional neural network. The code taste classification A and the code taste classification B are function-level code taste detection methods based on deep learning provided by code taste classification of a multi-layer perceptron. Under the condition of short detection time, it can be guaranteed that the detection result has high recall rate and accuracy.

The invention relates to a robot operation trajectory acquisition method based on a line laser sensor. The method comprises the following steps that an to-be-operated path of a robot is scanned by using the line laser sensor, contour data of a laser line are extracted according to a certain sampling frequency, finally an operation trajectory of the robot is automatically generated according to thecontour sampling information on the whole path and position information of the robot, and the operation trajectory comprises information such as the operation position, the operation posture and theoperation speed of the robot. According to the method, the operation efficiency of the robot on a complex path can be improved, and the automation level of the robot during working can be improved.

The invention discloses a machine learning-based xss defense system and a realization method thereof. The system comprises a data packet capturing module, a machine training module, a feature value extraction module, a feature value matching module, a machine learning module, a feature value processing module and a log record module which are sequentially connected. In the machine learning-based xss defense system of the invention, monitoring of xss attacks is carried out on a defended target, machine learning is carried out on strange xss attack code feature values, latest xss feature valuescan be quickly and automatically collected in cloud-side xss attack defense, manual collection of social engineering information is eliminated, and high effectiveness and rapidity of xss defense are realized.

The invention relates to a method for monitoring and early warning of flammable gas concentration, which mainly solves the problem of poor safety in the prior art. The present invention stores the flammable gas concentration data in the database by adopting a flammable gas concentration monitoring and early warning method, and processes the data as a time series to obtain the flammable gas concentration time series data, and then outputs it through a neural network, The concentration boundary value is set in advance, and when the boundary value is reached, the technical solution of automatic alarm by the system solves the above problems well, and can be used in flammable gas concentration monitoring and early warning.

The invention relates to a processing method and apparatus of multimedia data. The method comprises the following steps: obtaining life characteristic information detected by a detector worn by a user in the process when multimedia data is played; and according to the life characteristic information, extracting target data in the multimedia data. By use of the technical scheme, according to the life characteristic information, the target data in the multimedia data, i.e., wonderful fragments in the multimedia data, can be automatically extracted, the conventional mode of extracting the wonderful fragments by reliance on recall of the user is avoided, memory burden of the user is reduced, and at the same time, since the life characteristic information can more accurately reflect the emotion of the user, it can be ensured that the extracted target data is more accurate and is truly the wonderful fragments leaving a quite deep impression on the user.