139 results about "Linear object" patented technology

A system and method for replacing an original linear object with an updated linear object. In a flash memory or other memory device storing groups of data objects, in replacing a linear object with an updated linear object of the same size, the present invention overwrites the original linear object in the same memory space as the original version. As a result, updating the data requires erasing and writing of the block of flash memory cells where the data object is stored. A copy of the original linear object is stored so that the original version of the linear object is available for undoing the update and/or facilitating recovery if the updated linear object becomes corrupted.

A controller design for switching between m linear multivariable controllers each of whom stabilizes a linear plant has been presented. A Youla-Kucera factorization was exploited in the interest of obtaining a closed-loop system that is exponentially stable for any switching signal σ(t) in the absence of plant model uncertainty. Robustness to practical model uncertainty was also considered and lower and upper bounds on the tolerable magnitude of unstructured additive plant uncertainty were presented. Numerical example demonstrated that the two controller degrees of freedom in the proposed controller design could be used to separately modify the closed-loop steady-state (with respect to σ(t)) performance and the switching transients.

The invention discloses a ridgelet bi-frame system-based SAR image linear object detection method, which comprises the following steps of: (1) performing histogram equalization on an input SAR airfield image to be detected to obtain an enhanced result image; (2) pre-filtering the enhanced image and performing dyadic wavelet transform-based image edge detection on a result after the per-filtering; (3) setting a threshold value T1, setting the edges less than the threshold value in image edge detection results to be zero and reserving the edge regions more than the threshold value; (4) detecting the edge line of an airfield runway according to the reserved edge regions; (5) setting a threshold value T2 and performing binaryzation processing on detected airfield runway edge results; and (6) matching binaryzation processing results with the results of an original SAR airfield image after the filtering by using a linear tracking method, and determining the actual length of the runway. The method has the advantages of no complex post-processing process, high practicality, quickness, and precision positioning, and can be used for the extraction of the airfield runway in a relatively large complex SAR image scene.

A method of continuous detection of the thickness and/or homogeneity of linear objects, particularly textile fibres, using a source of light as a part of the transmitter and an optical scanner to scan the light emitted by source as a part of the receiver. Combination of point or surface light source and collimating element as part of transmitter and combination of optical scanner and collimating element with pinhole as part of transmitter allows increased measuring area and accurate measurement of linear object thickness.

An image processing method and an image processor for drawing the movements of such linear objects as fur, hair, and grass of a turf being influenced by wind have not been proposed thus far. The present invention provides image processing method executed by an image processor for projecting and drawing linear objects viewed from view point on a two-dimensional plane when the view point, ground, and linear objects, of which one end of each linear object is fixed on the ground, are positioned in virtual three-dimensional space, comprising a drawing step of layering the cross-sections of linear objects created by cutting the plurality of linear objects at planes which are parallel with the ground for each of planes as semi-transparent layers, and a redrawing step of moving the semi-transparent layers in a predetermined direction after a predetermined time elapsed and redrawing the semi-transparent layer(s) on the two-dimensional plane.

A master includes an externally operated manipulation unit. The master transmits, upon detection of an amount of operation of a catheter and a delivery wire by the manipulation unit, the detected amount of operation to a slave. The slave includes an actuator applying a force in a longitudinal axial direction to a delivery wire or the like according to the applied driving amount to move the delivery wire. The manipulation unit includes a secondary catheter manipulation unit and a delivery wire manipulation unit for operating a catheter and a delivery wire individually, arranged in close proximity at the surface of a casing of the master.

An image processing method and an image processing apparatus are disclosed, in which curved linear objects and uneven linear objects as well as rectilinear objects can be detected easily and accurately. Edge pixels P1 extracted from a gray-scale image to be processed are sequentially considered to search for an edge pixel having an opposite direction of density gradient to each of the edge pixels P1 within the range of a predetermined length W along the direction orthogonal to the edges. Once an edge pixel P2 meeting these conditions is extracted, a line segment having a length L is set extending in the direction C parallel to the edge of the edge pixels P1 from an intermediate point Q between the extracted edge pixel P2 and the edge pixel P1 under consideration.

The subject method for delivering power to a moving target wirelessly via electromagnetic time reversal can find applications in wireless electrical transmission to portable devices, wireless heating of portable devices, novel wirelessly powered accelerometers, hyperthermic treatment of cancers, and many other applications. The subject non-linear time reversed electromagnetic waves based wireless power transmission (WPT) system targets either a single linear or non-linear object where a selective targeting between two diodes has been demonstrated simultaneously with different degrees of non-linearity in a three-dimensional ray-chaotic billiard model. A dual-purpose rectenna with harmonic generation for wireless power transfer by non-linear time-reversal has been designed for the subject system using the Schottky diode.

[Problem]

Provided is a wire grip, which has excellent workability for bracing the wire and which can grip a linear object for bracing the wire without applying any excessive load to the linear object.

[Solution]

The wire grip comprises a stationary-side wire gripping portion provided with a body and having a substantially straight front shape, and a movable-side wire gripping portion arranged to face the stationary-side wire gripping portion and set movable back and forth with respect to the stationary-side wire gripping portion, whereby the linear object can be gripped between the stationary-side wire gripping portion and the movable-side wire gripping portion, wherein a first action portion for moving the movable-side wire gripping portion back and forth and a second action portion connected to the first action portion by a connecting rod are turnably attached at their individual ends to the body, wherein the other end of the first action portion and the other end of the second action portion are turnably attached to one end of the connection rod and an intermediate portion of the connection rod, respectively, wherein the other end of the connecting rod is pulled substantially parallel to the stationary-side wire gripping portion and the movable-side wire gripping portion so that the connecting rod, the second action portion and the first action portion are linked to act to move the movable-side wire gripping portion forward with respect to the stationary-side wire gripping portion.

The invention discloses a detection method of an airport area through an aerial shooting image, and aims at solving the technical problem that an airfield runway detection method is poor in detection effect under existing long linear characteristics. The method comprises that at first, according to a long straight line characteristic of an airfield runway, a Steger algorithm is used for strengthening a linear object in the image, and the central point of the linear object is determined through calculation of a characteristic value of the maximum absolute value of an Hessian matrix; then straight line detection is carried out on the result of the linear objects strengthened by the Steger algorithm through Hough conversion; and finally the position of an airport is determined through straight line connection and statistics. Due to the fact that the Hough conversion detection straight line is carried out on the basis of the result of the Steger algorithm, a great quantity of interference line segments are removed, and a detection effect of the airport area is improved.

The invention provides a metal and non-linear object composite detector which comprises a high frequency signal source, a radiofrequency emission unit, a first filter combination, a local oscillator unit, a frequency mixing unit, a second filter combination, an intermediate-frequency demodulation unit, a panel control module, an alarm output module, a signal processing and controlling unit, a sampling unit, an amplification unit, a low pass filter, a phase detector, a low frequency signal source, a low frequency emission unit, a preamplifier and a combined probe. According to the detector, a non-linear node harmonic wave detection technology is combined with a metal detection technology, a suspected object can be detected in a non-contact manner, both a metal object and a non-linear node object can be discovered, and the detector is capable of distinguishing the two kinds of objects, and can be applied to security inspection in places as airports, stations and conference areas as well as to technical inspections in special places which are used for diplomacy or secrecy of police, national security department, and the like.

There is provided a linear object comprising magnesium-alloy having not only excellent heat resistance but also excellent plastic formability. The linear object comprising magnesium-alloy contains, on a mass percent basis, 0.1% to 6% Y, one or more elements selected from the group consisting of 0.1% to 6% Al, 0.01% to 2% Zn, 0.01% to 2% Mn, 0.1% to 6% Sn, 0.01% to 2% Ca, 0.01% to 2% Si, 0.01% to 2% Zr, and 0.01% to 2% Nd, and the balance being Mg and incidental impurities, in which the linear object comprising magnesium-alloy has a creep strain of 1.0% or less, the creep strain being determined by a creep test at a temperature of 150° C. and a stress of 75 MPa for 100 hours.

The invention discloses a cone beam CT system geometric parameter calibration method. The method includes the following steps that projection data of a calibration model at a projection angle is collected; the center line equation of each linear object is determined according to the projection data of the model, the position of the intersection point of center lines is worked out, and then the lengths of the sides of a quadrangle formed by projections of the four linear objects on a detector are worked out; phi is calculated with the ratio of the left side to the right side, theta is calculated with the ratio of the upper side to the lower side, and delta D can be worked out according to the length of any side of the projection quadrangle; eta, delta u and delta v are calculated with phi, theta and the projection coordinates of the intersection point of two adjacent straight lines on a calibration template on a detector plane which includes phi and theta and deviates by delta D in the X axis direction; after the geometric parameters are obtained, FDK reconstruction with the parameters is carried out, and a corrected reconstructed image is obtained. According to the method, improvement is carried out on the basis of a four-point model, the wireframe model is proposed, and the model retains the advantages of the four-point model that 6 geometric parameters are worked out through one time of projection and the calculation amount is small, and improves noise immunity compared with a point model.

The invention discloses a linear object detection method and system based on unmanned plane remote sensing. The method comprises the following steps: a, obtaining unmanned plane sequence images, and carrying out the extraction of features in a superposed region of the sequence images; b, carrying out the matching of the extracted features, generating a stereopair, and calculating the elevation information according to the stereopair; c, recognizing the edge information of a to-be-recognized target according to the elevation information and the color information of the image, and extracting a to-be-detected target according to the edge information. A data collection scheme is formulated according to the target features, and the sequence images with the high overlapping degree are obtained. A robust SIFT algorithm is employed for feature point matching, and the obtained elevation data is combined with the image features for the recognition of the target edge, thereby achieving the extraction of a conventional target. The method can greatly save the cost, and facilitates the improvement of the detection timeliness and accuracy of a linear target in the images.

Provided is a linear-object handling structure of a robot, in which a linear object for a motor that drives a second arm and a wrist and a linear object for a work tool that is attached to the wrist pass from a base part to the inside of a rotational drum in the vicinity of a first axis, are guided upward to the outside through a through-hole provided in the rotational drum, are respectively curved toward opposite lateral sides of the rotational drum in the substantially circumferential directions while each given a margin of length required for the motion of the rotational drum, are guided from the lateral sides of the rotational drum to the second arm in the longitudinal direction of the first arm while each being given a margin of length required for the motions of the first arm and the second arm.

The present application provides a position detection method based on an autonomous vehicle, DEVICES, EQUIPMENT AND MEDIUM, wherein the method comprises: according to the bottom neural network layer of the slender convolution kernel neural network model, determining the feature information of the target linear object image, identifying the feature information of the target linear object image by using a high-level neural network layer in the slender convolution kernel neural network model, and determining the size information of the target linear object image; Further, size information of thetarget line image is matched with preset coordinate system map information to determine a position of the autonomous vehicle. According to an embodiment of the present application, the size information of the target line image can be accurately determined, so that the position of the autonomous vehicle can be accurately determined according to the size information of the target line image and thepreset coordinate system map information.

The invention provides an electronic measuring device comprising a housing and a stretchable measuring tape installed in the housing. A measuring tape inlet-outlet unit is formed in the housing. In addition, the electronic measuring device also includes an automatic reading module and a prompting module. The automatic reading module consists of a reading unit arranged in the housing and a marking scale arranged at the measuring tape. When the device is used for measurement, the automatic reading unit is used for automatically reading the marking scale of the measuring tape and outputting a corresponding measurement result to the prompting module. The prompting module is used for prompting the user of the measurement result. The electronic measuring device is used for measurement of a human body or some non-linear objects. The automatic reading module reads measurement data automatically, so that the measurement efficiency is improved and the measurement data are standardized; the device can be carried conveniently; and errors are reduced.