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271results about How to "Simplify the operation process" patented technology

Unmanned aerial vehicle depth image acquisition method and unmanned aerial vehicle

The invention provides an unmanned aerial vehicle depth image acquisition method and an unmanned aerial vehicle. The method comprises the steps that an onboard camera is used to acquire the image sequence of a predetermined scene, wherein the Nth image and the N+1th image in the image sequence have overlapping areas and the area ratio of the area of each overlapping area to the area of the Nth image and the N+1th image is higher than a preset ratio; an optical flow method based on feature matching is used to acquire the change of the location information of each pixel of the Nth image in each overlapping area in the N+1th image, and accordingly the pixel movement speed of each pixel of the unmanned aerial vehicle in each overlapping area in a camera coordinate system is acquired; the actual flight speed of the unmanned aerial vehicle in a world coordinate system is acquired; and according to the pixel movement speed, the actual flight speed and the parameters of the onboard camera, the depth image of each overlapping area is acquired, and accordingly integrating is carried out to acquire the depth image of a predetermined scene. The method provided by the invention can be used to accurately acquire the depth images, and has the advantages of wide application scope, low cost and easy realization.
Owner:GUANGZHOU XAIRCRAFT TECH CO LTD

Intelligent terminal and method for controlling bluetooth device via intelligent terminal

The invention relates to an intelligent terminal comprising a discovery module, a connection module, an identification module, a first display module, a detection module, a second display module, a third display module and a transmission module. The discovery module is used for searching a bluetooth device around the current intelligent terminal. The connection module is used for establishing a bluetooth pairing connection with the bluetooth device when the discovery module searches the bluetooth device. The identification module is used for identifying the type of the bluetooth device. The first display module is used for displaying the type of the bluetooth device to a user via a corresponding icon so that the user can click the corresponding icon. The second display module is used for displaying a function control interface supported by the bluetooth device so that the user can click a corresponding function operation option. The third display module is used for displaying a data option corresponding to the function operation option. The transmission module is used for transmitting the data corresponding to the data option to the bluetooth device so as to execute a corresponding operation. Therefore, an operation procedure in the prior art is simplified and the user operation is facilitated.
Owner:SHENZHEN 3NOD DIGITAL TECH +2

Automatic eccentric correcting method and device for machining hollow shaft

The invention relates to an automatic eccentric correcting method and device for machining a hollow shaft. The automatic eccentric correcting method comprises the following steps that the hollow shaft is fixed to a turning center; the X coordinate value and the Y coordinate value of the axial center of an eccentric inner hole of the hollow shaft are measured, and the eccentric amount of the eccentric inner hole is calculated; an inner hole chamfer is machined with the axial center of the eccentric inner hole as the benchmark; the hollow shaft is automatically pre-tightened to enable the axial center of the eccentric inner hole to coincide with the axial center of the turning center, and automatic eccentric correction is achieved; the outer circle of the hollow shaft is turned roughly; the inner hole of the hollow shaft is turned in a fine mode, and then eccentric correction is finished. The automatic eccentric correcting method and device for machining the hollow shaft can achieve automatic eccentric correction of the eccentric hollow shaft on the turning center, is simple in operation process and is high in efficiency, and the production efficiency is improved by 5-8 times compared with a manual method. The eccentric amount of the outer circle and the inner hole of the hollow shaft can be lowered to below 0.3mm, and the machining accuracy of the hollow shaft is largely improved.
Owner:CRRC QINGDAO SIFANG CO LTD

Method for generating laser cutting program

The invention provides a method for generating a laser cutting program, which comprises: a step 1, acquiring digital graphic data of an object to be processed by using a camera and performing graphic pretreatment of the digital graph; step 2, manually defining a detection guide line in the pretreated digital graph, allowing a computer to extract coordinate data of graphic boundary points near the detection guide line under the guidance of the detection guide line, and forming a coordinate data link list of the coordinate data; a step 3, forming a graphic element data link list by using straight lines, arcs and parametric curve piecewise fitting coordinate data; step 4, smoothly connecting adjacent graphic elements by using a three-order Hermite parameter curve and filling the connected graphic elements into the graphic element data link list; step 5, converting the graphic element data link table into motion instruction of a laser cutter through post treatment and transmitting the motion instruction to a controller of the laser cutter to execute the motion instruction after the motion instruction is decoded. The method adopts machine vision and digital graphic processing technology to form main-machine interaction and therefore can generate a high-quality laser cutting program.
Owner:GUANGDONG HANS YUEMING LASER GRP CO LTD +1

Road condition data processing method and device for internet of vehicles and computer equipment

The application relates to a road condition data processing method and device for the internet of vehicles, computer equipment and a storage medium. The method comprises: acquiring vehicle data of connected vehicular terminals in the internet of vehicles, storing the acquired vehicle data, zoning vehicles to road sections according to longitude and latitude data in the vehicle data, performing road condition analysis on each road section according to speed and direction data to obtain jamming condition of each road section, dividing each road section into multiple jamming levels according to the jamming condition, storing the jamming levels, receiving a road condition data request from a request terminal, wherein the road condition data request includes longitude and latitude parameters ofa planned path, searching the stored road condition data for road condition data of the corresponding road section under the corresponding jamming level according to the road condition request, and returning the road condition data to the request terminal. By using the method herein, corresponding road condition data can be automatically acquired and sent to the request terminal according to a request from the request terminal, and road condition data for vehicles can be acquired more efficiently.
Owner:广州斯沃德科技有限公司

Harris-based spine feature point automatic recognizing method

The invention discloses a Harris-based spine feature point automatic recognizing method. The Harris-based spine feature point automatic recognizing method comprises the steps of modeling and cutting a spine three-dimensional model through a CT (Computed Tomography) picture; obtaining a specific spine body which is to be subjected to feature point recognition; carrying out meshing on the spine body, and enabling the spine body to be formed by small triangular patches; adaptively calculating a threshold ring number of each one of all vertexes of a spine body model; calculating model vertex normal vectors; obtaining a first feature vector and a second feature vector by analyzing the normal vectors of one vertex and other vertexes within the threshold ring number of the vertex by utilizing a principal component analysis method; carrying out function fitting on the first feature vector and the second feature vector by utilizing a least square method; carrying out vertex variation value calculation on a fitted function by utilizing a Harris algorithm; sorting variation values of all the vertexes in a descending order, and picking out a candidate feature point; carrying out non-maximum suppression on the candidate feature point according to a certain suppression region, and finally obtaining a feature point of the spine body. The Harris-based spine feature point automatic recognizing method disclosed by the invention can be used for research related to spines in the field of surgical sciences.
Owner:XIDIAN UNIV

Single vehicle origin-destination (OD) acquisition method based on passing vehicle electric alarm data

The invention relates to a single vehicle origin-destination (OD) acquisition method based on passing vehicle electric alarm data. The method comprises steps of acquiring traffic original data like passing vehicle electric alarm data, performing data preprocessing, analyzing historical data, and calculating a vehicle passing time threshold of all adjacent electric alarm stops; then generating vehicle traveling records of a to-be-checked vehicle and corresponding vehicle passing time based on passing vehicle electric alarm data, and identifying vehicle OD and vehicle traveling track by using the vehicle passing time threshold; finally, checking and repairing vehicle traveling track according to the upstream and downstream relationship between stops, and showing on a map. The method fully utilizes vehicle passing electric alarm data, and introduces vehicle passing time threshold on the basis of analysis of historical data, thereby acquiring more accurate single vehicle OD; furthermore, checking and repairing of the vehicle traveling track help solve a problem of lacking of original data, so that the method is more suitable for actual traffic environment. The method has characteristics of simple operating process, low calculating cost, and strong applicability.
Owner:ZHEJIANG UNIV OF TECH

Generation method and device for tracer identification information

The invention discloses a generation method and device for tracer identification information. The method comprises the following steps of: obtaining the three-dimensional coordinate of each near-infrared luminous point under the coordinate system of an optical positioning system; carrying out decentration on the three-dimensional coordinate, and carrying out minimum plane fitting on a point set obtained after the decentration; obtaining a projection point of the point set to a minimum plane, and according to the projection point and a normal vector of the minimum plane, determining a new three-dimensional coordinate system; according to an offset quantity which is transformed into the coordinate system of an optical positioning system by the new three-dimensional coordinate system, obtaining a rotary translation relationship; and according to the rotary translation relationship, calculating the three-dimensional coordinate of each near-infrared luminous point in the new three-dimensional coordinate system, and according to the three-dimensional coordinate, generating the tracer identification information. The tracer identification information generated by the above method can be used in different optical positioning systems, and has high compatibility.
Owner:广州艾目易科技有限公司
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