178results about How to "Fix inaccurate positioning" patented technology

The invention discloses a method for positioning and tracking outer contour feature points of key face organs and a device thereof, comprising the following steps: first, the positions of canthi points and angulus oris points on the face are obtained; the medial axis of the eyes and the mouth is identified based on the positions; the outer contour feature points of the eyes and eyebrows are identified on the medial axis of the eyes, and the outer contour feature points of the mouth are identified on the medial axis of the mouth. Consistent positioning and tracking of outer contour feature points of key face organs are conducted on such a basis. The technical proposal provided by the embodiment of the invention solves the problem of inaccurate positioning of outer contour feature points of eyes, mouth and eyebrows when people makes various faces; based on the positioning of the feature points, the existing two-dimensional and three-dimensional face models can be real-time driven, and face expressions and motions such as frowning, blinking and mouth opening of people before a camera can be real-time simulated, thus creating various real and vivid face animations.

The invention provides an intelligent sweeping robot. The intelligent sweeping robot comprises a functional motor module, a powder module, a charging base, a motor drive circuit module, a corner obstacle detection module, a charging base positioning module and an intelligent control module; the motor drive circuit module is used for providing driving force for the functional motor module, the corner obstacle detection module is used for detecting corner obstacles, the charging base positioning module is used for positioning the charging base and sending obtained positioning information to the intelligent control module, and the intelligent control module makes communication with the motor drive circuit module, the corner obstacle detection module and the charging base positioning module respectively to control information transmission of the functional motor module, the corner obstacle detection module and the charging base positioning module. By means of the intelligent sweeping robot, the problem that the planned route of the sweeping robot is unreasonable can be solved, remote management can be achieved through an intelligent terminal, linkage with a home gateway or intelligent appliances can also be achieved, and home intelligentization is achieved.

The invention discloses a tower positioning method and device for an overhead power transmission line. The tower positioning method for the overhead power transmission line comprises the following steps of determining a three-dimensionally simulated terrain scene of a pre-built target region, wherein the overhead power transmission line passes through the target region; generating tower building factors in the three-dimensionally simulated terrain scene, wherein the tower building factors are tower building points for ejecting a tower in the overhead power transmission line; and determining a tower building position of the tower according to the tower building factors. According to the tower positioning method, an effect of improving the accuracy in positioning the tower is achieved.

The invention discloses a mobile robot positioning and mapping method, and relates to the technical field of robot positioning. The mobile robot positioning and mapping method comprises the steps of initializing the position of a mobile robot and a raster map of each resolution; estimating the possibility that the tail ends of laser beams in each raster map is occupied; iteratively solving the position change data, in the raster map with the lowest resolution, of the mobile robot from the last moment to the current moment; initializing a particle set; updating the position of the mobile robotin each particle; selecting a target particle and expanding the particle set; scanning the matching degrees between the particles in the particle set and the corresponding raster maps; calculating theweights of the particles in the expanded particle set; updating the corresponding maps according to the positions of the robot in the expanded particle set; selecting standby particles; and updatingthe raster map with the lowest resolution. The mobile robot positioning and mapping method is capable of solving the problem that the traditional particle filter-based SLAM systems are relatively large in positioning error and inaccurate in map due to wheeled speedometer errors.

The invention discloses a region identification method and device, and belongs to the field of image processing. The region identification method comprises that a predetermined edge of a certificate in a certificate image is identified; at least one information region is determined in the certificate image according to the predetermined edge; and the information region is cut to obtain at least one character region. The problems that certain information region is hard to identify and in accurate in positioning when the certificate image is directly short in the prior art are solved, the information region is determined via the predetermined edge of the certificate image and cut, and thus, the information region is accurately positioned, and the character region in the information region is accurately identified.

The invention discloses an ultrasonic and infrared combined positioning device, which comprises a touch screen and a touch pen, wherein a microprocessor, an infrared transmitting tube and an infrared receiving tube are arranged on the touch screen; and the positioning device also comprises an ultrasonic receiver and an ultrasonic transmitter, wherein the ultrasonic receiver is arranged on the touch screen, and the ultrasonic transmitter are arranged on the touch pen. The invention also discloses an ultrasonic and infrared combined positioning method, which comprises the following steps of: S1, determining the distance between a touch point and the ultrasonic receiver and judging whether the number of the touch point is only one by the ultrasonic receiver, and if so, entering the S2; otherwise, jumping to the S3; S2, detecting the Y-axis coordinate of a positioning point, and jumping to the S4; S3, detecting the Y-axis coordinates Y1,..., Yn of the touch points, and determining a positioning point; and S4, solving the X-axis coordinate of the positioning point, and returning to the S1. The positioning device has the advantages of accurate positioning, simple structure, low cost andthe like.

The invention is suitable for the field of optical measurement technology, and provides a high-precision circular marking point center positioning method in a large-distortion lens and a device thereof. The method comprises the steps of firstly, acquiring N target images with printed circular marking point patterns in a placement attitude by means of a camera of the large-distortion lens, and obtaining N target images; then, performing elliptical central coordinate extraction on the target image, and calibrating a fixed inner parameter of the camera and N external parameters; then, performingreversed projection conversion calculation for generating N target images which are parallel with an XW-OW-YW plane in a world coordinate system; performing circle center extraction calculation on theN target images, and performing forward projection conversion for calculating an imaging plane to the camera; obtaining N sets of coordinates as the image coordinate of the circular marking point center and continuously performing calibration, and updating the fixed inner parameter and the N external parameters; and if the image coordinate of the circular marking point center is stable, finishingpositioning. The method according to the invention realizes high-precision circular marking point center positioning.

The invention discloses a synchronizing signal zero-crossing-point positioning method and device. The synchronizing signal zero-crossing-point positioning method comprises the steps of sampling a power grid signal to obtain a sampled signal; calculating a phase angle of the sampled signal at the sampling completion moment to obtain the phase angle of the sampled signal; obtaining a phase angle of a synchronizing signal at the sampling completion moment to obtain the phase angle of a synchronizing signal; calculating the difference value between the phase angle of the sampled signal and the phase angle of the synchronizing signal; utilizing the difference value of the phase angles to adjust a zero crossing point of the synchronizing signal. By means of the synchronizing signal zero-crossing-point positioning method and device, the problem that the position of a zero crossing point of a synchronizing signal in the prior art is inaccurate to position is solved, and further the effects of accurately positioning the position of the zero crossing point of the synchronizing signal and improving the carrier communication success rate of a power line network are achieved.

The invention discloses a vehicle positioning method, a navigation method and related devices. The vehicle positioning method comprises the steps that satellite positioning information and driving information of a vehicle are acquired, absolute position information of the vehicle is obtained, and a road where the vehicle is located in a road map is determined according to the absolute position information of the vehicle; according to the road where the vehicle is located, the vehicle line information of each lane of the road in a road map is obtained; the vehicle collects image information ofa road where the vehicle is located, and lane line information of each lane in the image is obtained; and the vehicle line information of each lane in the image is matched with the vehicle line information of each lane of the road in the road map to obtain positioning information of the lane where the vehicle is located in the road map. According to the invention, the vehicle is positioned to thelane of the road by collecting the image information of the road where the vehicle is located and combining the lane-level road map, so that the problem of inaccurate vehicle positioning in the priorart is solved.

The invention discloses a license plate positioning method. The license plate positioning method comprises the steps that a vehicle image is preprocessed firstly, noisy points are removed, and sharpening is performed; then, a zone having more angular points in the image is detected to determine a candidate license plate zone; finally, a predicted license plate zone is screened out from the candidate license plate zone through a convolutional neural network. By adopting the license plate positioning method in which angular point detection and convolutional neural network are combined, the license plate positioning problem in a complicated environment is solved, and the license plate positioning accuracy is improved.

The disclosure provides a positioning information correction method and device, a client, and a storage medium. On the basis of obtaining preliminary positioning information, the positioning information near the preliminary positioning information is further obtained according to the selection of a user and is submitted to a server for comparison judgment, thereby confirming whether the new positioning information selected by the user is acceptable, further determining whether the positioning is successful, and positioning a location within a target area, so as to solve the problem of inaccurate positioning of the mobile terminal and improve the accuracy of positioning of the mobile terminal. The positioning information correction method and device, the client, and the storage medium in the disclosure are applicable to the case that a deviation exists in the positioning of the mobile terminal of the user, but the deviation is not large, and can be specifically applied to the application fields such as punching and attending, outdoor sports, and the like of the user.

The invention provides a bottle body positioning device. The bottle body positioning device is used for sequentially positioning a plurality of bottles which are driven to move by a conveying chain channel in the extension direction of the conveying chain channel, so that bottle bodies of the multiple bottles face the same predetermined direction, and the multiple bottles are arranged in a one rowmode in the extension direction of the conveying chain channel. The bottle body positioning device includes a first camera set, an image processing unit and a bottle rotating mechanism. The image processing unit determines the orientations of the bottles according to first image information of the bottles obtained by the first camera set, and determines rotation angles needing to be adjusted of the bottles according to the predetermined direction, the bottle rotating mechanism rotates the bottles by the angles, and the bottle bodies of the bottles are adjusted to the predetermined direction.The bottle body positioning device realizes improvement of the positioning efficiency of the bottle bodies and the positioning accuracy of the bottle bodies.

The invention discloses a positioning beam transmitting system, a positioning beam transmitting method and an indoor positioning system. A positioning space includes multiple sub positioning spaces. Multiple positioning beam transmitting devices are respectively fixed to predetermined positions in the multiple sub positioning spaces, and are divided into at least two transmitting device groups. A controller is connected with the multiple positioning beam transmitting devices, and is used for making the multiple positioning beam transmitting devices switch the working state thereof in a predetermined period. The predetermined period includes at least two sub periods which respectively correspond to the at least two transmitting device groups. The positioning beam transmitting devices in each transmitting device group work in the corresponding sub period, and do not work in the other sub periods. According to the invention, the generation of a laser overlap region is avoided during expansion of the positioning space, so that the problem of inaccurate positioning caused by a laser overlap region is solved.

The invention discloses a zebrafish embryo heart injecting system and method based on vision servo three-dimensional rotation, and relates to the field of micro-injection. The zebrafish embryo heart injecting system comprises a stereomicroscope, a CCD camera, a supervisory computer, a triaxial mechanical hand, a rotating manipulator, a micropipet and a pump, wherein the CCD camera is located abovethe stereomicroscope, and is used for collecting images and transmitting the collected images to the supervisory computer for treatment; the supervisory computer is connected with the triaxial mechanical hand and the rotating manipulator, and is used for analyzing the real-time position and the gesture of a zebrafish embryo as well as the point position of the micropipet according to the collected images, and transmitting a control signal to the triaxial mechanical hand and the rotating manipulator to control the direction and the speed of the triaxial mechanical hand and the rotating angle of the rotating manipulator; the triaxial mechanical hand is used for clamping the corresponding micropipet to move the point of the corresponding micropipet to a target position; the rotating manipulator is used for clamping the corresponding micropipet to rotate the zebrafish embryo; and the pump is used for providing sucking force for sucking and holding the zebrafish embryo and thrust for pushing out foreign substances. The system is simple in structure, high in precision and good in stability.

The invention relates to a positioning method and device for a seabed acoustic transponder and belongs to the technical field of underwater acoustic positioning. The method is characterized in that GNSS observation data, hull attitude angle observation data, sound velocity profile data, underwater acoustic signal round trip time and water depth data are used, according to an established positioning model containing depth difference constraints between a ship bottom transducer and the seabed acoustic transponder, the seabed acoustic transponder can be rapidly and accurately positioned without solving an intermediate quantity so that the data processing flow is simplified, and reliability of the seabed control point positioning result is ensured.