131results about How to "Accurate and efficient positioning" patented technology

The invention relates to apparatus and methods for facilitating total hip arthroplasty.

The invention relates to a face feature point positioning method and device, and belongs to a computer field. The method comprises the following steps: detecting a face image in a current frame of image in a video sequence; according to the final positioning positions of the face feature points of the previous frame of image, determining the initial positioning positions of the face feature points of the current frame of image in the detected face image; and according to the image feature value of the face image on the initial positioning positions, positioning the face feature points of the current frame of image so as to obtain the final positioning positions of the face feature points of the current frame of image. The device comprises a detection module, a determining module and a positioning module. According to the invention, the obtained initial positioning positions of the face feature points of the current frame of image can be near the practical positions of the face feature points of the current frame of image according to the final positioning positions of the face feature points of the previous frame of image so as to reduce iterations in a positioning computation process and improve feature point positioning efficiency.

In a surgical method for resecting a bone during joint arthroplasty, an anchoring structure is fixed to a reference, such as a bone, and an articulating linkage is attached to the anchoring structure. A resection guide is fixed to the articulating linkage and then moved into a desired position and orientation. The articulating linkage is then locked to fix and position and orientation of the resection guide. The bone is then resected. Additional resections can be performed by changing the resection guide, unlocking the articulating linkage, positioning and orienting the resection guide into a different position, locking the articulating linkage and then performing the second resection. Computer navigation trackers can be used to accurately set the position and orientation of the resection guides.

The invention discloses a vulnerability detection system based on a large ISP interconnection port and a method thereof. The method comprises the steps that a URL collecting system collects network data when getting access to URLs on the internet, obtains and transmits the URL network data to a data preprocessing server in a timing mode; the data preprocessing server filters out the URL network data with URL suffix names conforming to .action or .do, and stores the data to a data storage server; the data storage server stores the URL network data; a struts 2 vulnerability detection system tests whether vulnerability exists in a website corresponding to each URL item by item and stores the data to a database server; the database server stores and detects URL records with vulnerability; a display system reads and displays the URL records with the vulnerability The vulnerability detection system can provide web vulnerability information for all the websites in an education network, the vulnerability can be restored conveniently in time, and serious loss is avoided.

The invention discloses a combined calibration method between a three-dimensional laser radar and a mechanical arm of a mobile operation robot, and belongs to the technical fields of autonomous targetrecognition, grabbing and human-computer cooperation of the mobile operation robot. According to the method, a common square paperboard is used as a reference object in a robot calibration process, three-dimensional point cloud acquisition is carried out through a three-dimensional laser radar loaded through the robot, the acquired point cloud is preprocessed, the square paperboard clamped through the tail end of the mechanical arm is recognized, a coordinate value of the mechanical arm in the three-dimensional laser radar is obtained, and the coordinate value of the mechanical arm in a controller is acquired through the mechanical arm controller; and the position of the mechanical arm is repeatedly adjusted for N times (N is larger than or equal to 8 ) and the corresponding coordinate values of the mechanical arm are obtained; and finally, the coordinate conversion relation between the coordinate of the mechanical arm in the three-dimensional laser radar and the coordinate of the mechanical arm controller through using a least square method is solved.

The invention provides a method and system for tracking an underwater robot in real time, and unmanned relay equipment, and relates to the technical field of marine equipment. The unmanned relay equipment comprises the following parts of an underwater acoustic communication device for communicating with the underwater robot; an underwater robot positioning device for positioning the underwater robot equipped with an acoustic beacon; a satellite communication positioning device for satellite communication with a mother ship or a shore-based accusation tower, and for calculating real-time latitude and longitude; an inertial navigation device for providing a three-degree-of-freedom attitude angle and three-degree-of-freedom axial acceleration information; an autonomous control unit for receiving azimuth and distance data of the underwater robot calculated by the underwater robot positioning device, receiving the motion state data provided by the satellite communication positioning deviceand the inertial navigation device, calculating a navigation trajectory according to each received data and performing thrust distribution; and a power and propulsion device for receiving thrust distribution information and propelling the unmanned relay equipment to sail according to the navigation trajectory.

The invention discloses a method and a device for measuring a cylindrical spacer. The method comprises the following steps of: 1. pre-storing a standard image into a computer and pre-setting the positioning precision of the position of the cylindrical spacer; 2. using a measuring lens to collect the current image of the designated measurement position of the cylindrical spacer, and comparing the current image with the standard image; 3. determining whether the comparison result is in line with the preset positioning precision, if so, implementing the step 5, if not, implementing the step 4; 4.correcting the measurement position of the cylindrical spacer, and implementing the step 2; and 5. measuring the cylindrical spacer at the current position. The device comprises an image collection system, a microcomputer control system, a position correcting system and a measurement system of the cylindrical spacer. The method and the device for measuring the cylindrical spacer can achieve the automatic, high-efficient and precise positioning effect of the measurement position of the cylindrical spacer.

A user equipment (2) comprises a wireless interface (20) for communication with a cellular communication network. The wireless interface (20) is operative for a device-to-device transmission and/or a device-to-device reception in a position determining procedure in which a relative position of the user equipment (2) and at least one further user equipment (3, 4) is determined. The user equipment (2) is operative to communicate with a radio access network node (11) of the cellular communication network for network assistance in the position determining procedure.

The invention discloses an automatic module information positioning method for a structural web page. The existing positioning method has the shortcomings that the match is not accurate enough, and the judge on the reasonable content is difficult. In order to solve the problems, the invention is characterized in that the attribute key word is positioned by a regular expression, so as to determine the distance between the attribute key word and the attribute value; finally, the whole attribute value is positioned according to the attribute key word and the distance between the attribute key word and the attribute value. The invention can accurately and effectively position the searched information. The invention is suitable for various net information searching engine.

An X-ray source has an evacuated housing containing an interior space and a housing projection having a projection interior communicating with the interior space. A cathode is mounted in the projection interior and an anode is mounted in the interior space. Two tubes proceed substantially parallel to each other through the projection and are sealed relative to the projection interior, the two tubes being disposed on opposite sides of an electron beam that proceeds from the cathode to the anode during operation of the X-ray source. An electromagnetic electron beam deflector has a U-shape with two legs that are respectively disposed in the tubes. The electron beam deflector is controllable to generate a magnetic field that deflects the electron beam to set a position of the focus on the anode.

The invention discloses a gross-error detection method of elevation anomaly data of GPS (Global Positioning System) and is a multi-dimensional gross-error positioning method based on anomalous points. The gross-error detection method comprises the following specific steps: (1) acquiring the data; (2) modeling by utilizing the data; (3) calculating Cook distance, and determining strong-influence-point numbers according to the average difference between the Cook distance D (i) and an average value D of all observed values; (4) calculating the wk distance and determining the strong-influence-point number according to a fractile value; (5) enabling the strong-influence-point numbers determined by the Cook distance and the Welsch-Kuh distance to form a union set, thus obtaining an anomalous point set and enabling the quantity m of the non-repeated strong-influence-point numbers as the dimension of the gross error; and (6) positioning the gross error. The gross-error detection method disclosed by the invention has the advantages that by analysis on the application results of extensive examples, when the dimension of the gross error reaches 19% of that of the total sample, the gross error can be still positioned accurately; and the gross-error detection method has important significance for improving the application quality of measurement data and has obvious social and economic values.

A user notification system and a computer input device, such as a mouse. The computer input device includes an illumination member that enables a user to quickly and accurately position the input device during poor lighting conditions and determine whether the computer is ON. The input device includes a housing and an illumination device that is supported by the housing. Illumination from the illumination device is visible when the input device is placed on a supporting surface. The illumination member is also used to notify the user if one or more of various events have occurred in a computer application being run on the computer. The notification information is presented to the user by changing the state of the illumination member. An example of event for notification includes the receipt of a message in a communications program such as an e-mail message. The notification can make the illumination member blink as a function of the number of messages received. This enables information to be conveyed to the user without the need for text or audio, and without the need to view the computer monitor.

The invention relates to a chip character recognition method, in particular to a chip character anti-interference recognition method, which comprises the following steps of: (1) setting a camera and a light source; (2) calling a template, acquiring a frame of image by a camera, matching the frame of image with the template, and extracting a chip image only containing a chip; (3) extracting a chip character image only containing a character region; (4) sequentially carrying out noise reduction processing and threshold segmentation on the chip character image to obtain a binary image, and carrying out character segmentation on the binary image to obtain single characters; (5) performing character defect detection to obtain defect characters; (6) performing defect character optimization and character recognition: (6-1) performing defect character optimization; and (6-2) performing artificial neural network character recognition to obtain a final character string. According to the method, part of interference of the environment can be effectively reduced during image acquisition, errors of the placement angle of the chip are prevented, and the method cooperates with other detection equipment, so that the labor cost is remarkably reduced, and the production efficiency is improved.

The embodiment of the invention discloses an abnormal instance detection method and device for a distributed system, equipment and a medium, the distributed system comprises a plurality of services, each service comprises at least one instance, and the method comprises the following steps: collecting time sequence index data of each instance and call chain data for requesting to call each instance; determining a candidate abnormal instance set of a system abnormal moment according to the time sequence index data; and according to the call chain data, screening out at least one key abnormal instance from the candidate abnormal instance set, the key abnormal instance being an abnormal instance whose call has a positive contribution to the overall processing time of the request set. Accordingto the embodiment of the invention, the key exception instance in the distributed system can be efficiently and accurately positioned.

The invention provides an X-ray lung disease automatic positioning method based on weak supervised learning. The method comprises the following steps: collecting a plurality of lung X-ray films for initial marking, and arranging the lung X-ray films into a training set; preprocessing the training set; constructing a deep learning neural network based on the class activation graph and provided witha self-supervision attention module, performing multi-angle rotation on the processed lung X-ray film, and inputting the lung X-ray film into the deep learning neural network; judging the input lungX-ray film through a loss function set in the deep learning neural network; in the training process, optimizing the loss function after the judgment result is compared with an initial mark to obtain an optimized deep learning neural network; and inputting a new lung X-ray film into the optimized deep learning neural network, and positioning a focus displayed in the newly input lung X-ray film; andthe method has the characteristics of efficiently and accurately positioning the focus, reducing the judgment time of doctors, assisting the doctors to make decisions and improving the working efficiency.

The invention provides a processor replay debugging method and system. The system comprises a host, a system-level chip and at least one transaction processing device, wherein the system-level chip and the transaction processing device are arranged on a hardware simulation accelerator and the system-level chip comprises at least one processor, and the transaction processing devices correspond to the at least one processor; The transaction processing device is used for recording key information in the program running process of the processor in real time and periodically sending the key information to the host; and the host is used for replaying the program execution process of the processor by utilizing the key information and a source program stored by the host so as to realize offline debugging of the processor. According to the invention, the transaction processing device is used for recording the key information in the program running process of the processor, and the recorded keyinformation is used for replaying the program execution process of the processor to realize offline debugging of the processor, so that the software debugging efficiency of the processor can be improved, and the chip verification process is accelerated.

The invention discloses a tool for rapidly fixing a grout sleeve. The tool comprises a bolt with a tolled thread, and is characterized in that a handle is mounted at the top end of the bolt; an adjusting nut is downwards arranged on the bolt along the handle; the bolt at the lower end of the adjusting nut is sleeved with a spring part; a template is arranged on the bolt at the lower end of the spring part; a waist-shaped thread head is arranged at the bottom of the bolt; after the waist-shaped thread head is sleeved with a fixing clamp plate, a fastening nut is used for fixing; the waist-shaped thread head is pushed through a steel bar insertion end at the bottom of the grout sleeve; the handle is rotated to drive the fixing clamp plate rotationally reach to a clamp point in the grout sleeve; after the handle is released, the bottom surface of the grout sleeve clings to the surface of the template under the reset pressure of the spring part. The tool has the advantages that the operation process is very coherent, no very complex working procedure is needed, the positioning is precise and efficient, the own structure is simple, the manufacturing cost is low, and the use is convenient.

An embodiment of the invention relates to the technical field of communication, and discloses a target device positioning method and related equipment in a non-centralized scene. The method and the related equipment have no centralized processing center in a positioning system, when a radiation signal of a target device is not globally reachable (i.e., the radiation power of the target device is relatively small or the overall observation area is relatively large), on the premise of not increasing the total number of detection nodes in the positioning system, and by using the potential low-order characteristics of a target location matrix built by unknown target location vectors to be solved between adjacent cluster nodes and the average consistency of signal rebuilding information between the adjacent cluster nodes, accurate and efficient positioning of the target device in the non-centralized scene is realized.