489 results about "Border line" patented technology

A method of generating a character from an image. The method includes providing an image depicting a character, identifying, automatically by a processor, characteristic lines in the image, receiving an indication of a character to be cut from the image, and suggesting border lines for the character to be cut from the image, responsive to the identified characteristic lines and the received indication.

In a rotary cutting tool used for milling operations, a reversible indexable cutting insert is removably secured in a cutting body. The cutting insert has two opposing end surfaces interconnected by a continuous peripheral surface, including three side surfaces alternating with three corner surfaces. The side and corner surfaces intersect with both end surfaces at side and corner edges, respectively, with each side edge having a major cutting edge, and each corner edge having a corner and minor cutting edge. Each major and minor cutting edge slopes away from first and second end points, respectively, of its mutually associated corner cutting edge, towards a median plane. A first imaginary straight line extending perpendicular to the median plane and intersecting any one of the corner cutting edges at any point along its length except the second end point, passes through the median plane inside an insert boundary line.

The present invention discloses a road detection algorithm of fusion of area and edge information. The algorithm comprises: collecting road image, and employing self-adaption median filtering and noise reduction to obtain enhanced images; selecting the R component of the enhanced images in the RGB color space, employing a maximum between-cluster variance (Otsu) method to realize the road area segment of the images to obtain a binary segmentation image, and optimizing the binary segmentation image through adoption of the serial mathematical morphology; detecting the binary segmentation image through adoption of the optimal edge detection Canny detector to detect the binary segmentation image and obtain the road edge detection information, and employing the Otsu method to calculate the dual threshold in the optimal edge detection Canny detector; and employing the binary segmentation image and the road edge detection information to obtain a road border line in the image. The road detection algorithm of fusion of area and edge information employs the image processing technology to detect and extract the road information for the autonomous navigation system of a cable tunnel robot; and moreover, the road detection algorithm of fusion of area and edge information is a self-adaption road border line segmentation fusion method and can obtain a smooth and accurate road edge.

The invention provides a display panel and a display device, belonging to the display technical field, and solves the problems of the reduced display panel edge visual effect and the influence to user experiences caused by visual uneven border lines of present special-shaped panel edges. In the display panel, the edges of a plurality of rows of pixel units are arranged in a ladder pattern; each row of pixel units comprises a central pixel unit and an edge pixel unit. Each central pixel unit comprises a first film transistor corresponding to each sub-pixel; the first film transistor is provided with a first semiconductor zone; each edge pixel unit comprises a second film transistor corresponding to each sub-pixel; the second film transistor is provided with a second semiconductor zone. The length and width of the first semiconductor zone are set to be a first set length and a first set width, and the length and width of the second semiconductor zone are set to be a second set length and a second set width, thereby allowing the brightness of an edge pixel unit to be less than the brightness of a central pixel unit.

The invention relates to a lane line extraction method. The method comprises the following steps: three dimensional laser point cloud data is obtained and analyzed, road border lines are extracted and obtained from the three dimensional laser point cloud data, points at the middle of the two road border lines are used as candidate point cloud set for a lane line, a highlight point image is generated according to reflectivity of each candidate point in the candidate point cloud set for the lane line, wheelpath data is obtained, object highlight points in the highlight point image are screened according to a special relationship between the wheelpath data and three dimensional laser point cloud data, and a lane line is obtained after straight line extraction operation is performed. Lane line extraction speed and lane line extraction accuracy are improved, the object highlight points are screened based on the wheelpath data, the lane line is obtained after the straight line extraction operation is performed, the lane line can be obtained accurately and conveniently, and a lane line extraction device is also provided.

The invention discloses a border-crossing detection method and a border-crossing monitoring system based on video monitoring. The border-crossing detection method comprises the following steps: obtaining a closed boundary line and a safe passage line according to an endpoint of the top safe passage line of a boundary line set by a user; obtaining a tracking region through expansion and reduction of the closed boundary line; detecting a moving object of each frame of video monitoring image, to screen out a moving object region in the tracking region; performing matching tracking on the screened moving object region and a tracking object, to obtain a coordinate queue of the tracking object; performing object behavior analysis on the tracking object; judging whether a border-crossing risk exists; if no border-crossing risk exists, doing nothing; if a great border-crossing risk exists, warning; otherwise, judging whether an early warning for the current abnormal situation is required according to a security identifier; when warning or early warning, marking a target track according to the target coordinate queue. According to the invention, the border-crossing detection is performed according to the set boundary, the border-crossing detection for large regions and complex sites can be implemented, and the scope of application is wide.

An apparatus and method for a navigation system to detect arrival to a new city and provide information on the city such as dining, lodging, popular sightseeing place, etc. to the user. In addition, it can also provide the user a list of his or her friends in the new city according to an address book or from social networking websites. The navigation includes a detecting unit communicatively coupled with a position measuring device and a map information memory to detect whether the user is entering a new city by determining whether the user is moving across the new city border line. Further, the detecting unit indicates the user is entering a new city when the user is moving a predetermined distance away from an airport. Further, the new city information may not be shown if the user has visited the city before within a predetermined period.

An optical glass having a refractive index (nd) and Abbe number (νd) within a range enclosed with a border line consisting of straight lines connecting point A (nd being 1.75 and νd being 50.0), point B (nd being 1.80 and νd being 46.0), point C (nd being 1.80 and νd being 50.0) and point D (nd being 1.75 and νd being 56.0) in the order of the point A, the point B, the point C, the point D and the point A in x-y rectangular coordinates in which x coordinate represents Abbe number (νd) and y coordinate represents refractive index (nd), including refractive index (nd) and Abbe number (νd) on the border line except for the straight line connecting the point A with the point D and the straight line connecting the point B with the point C, containing, as essential components, SiO₂, B₂O₃, La₂O₃, Gd₂O₃, Li₂O and F, and being substantially free of As₂O₃.

The present invention provides a semiconductor device and an electric apparatus each of which can realize both high-speed switching operation and energy loss reduction and excels in resistance to current concentration based on a counter electromotive voltage generated by, for example, an inductance load of the electric apparatus. A semiconductor device (100) of the present invention includes: a semiconductor layer (3) made of a first conductivity type wide band-gap semiconductor; a transistor cell (101T) in which a vertical field effect transistor (102) is formed, the vertical field effect transistor (102) causing a charge carrier to move in a thickness direction of the semiconductor layer (3); and a diode cell (101S) in which a schottky diode (103) is formed, the schottky diode (103) being formed such that a schottky electrode (9) forms a schottky junction with the semiconductor layer (3), wherein the semiconductor layer 3 is divided into a plurality of square subregions (101T and 101S) based on virtual border lines (30) in plan view, and includes the subregion (101T) as the transistor cell and the subregion (101S) as the diode cell.

A method and an apparatus are provided to recognize a shape of a road on which a vehicle is traveling. Road edge shapes on a left side and a right side of the vehicle are recognized, from positions of roadside objects detected based on detection information from an on-board radar. Lane shapes that are shapes of lane boundary lines on the left side and the right side of the vehicle are recognized, from positions of lane boundary lines detected based on an image captured by an on-board camera. For each of the left side and the right side, such that the recognized road edge shape and the recognized lane shape are compared with each other, and the road shape is identified based on the comparison results.

The invention relates to a control system and a control method. An automatic walking device can be controlled to work on the basis of a preset working area. The control method includes the following steps that a positioning device outputs position information of the automatic walking device to a central processing unit, the central processing unit determines a position, corresponding to the working area, of the automatic walking device according to the position information, a corresponding control signal is produced on the basis of the position, corresponding to the working area, of the automatic walking device, and the automatic walking device adjusts a working mode according to the control signal. According to the control system and the control method, on the basis of a virtual working area which is preset in the central processing unit, when the automatic walking device is controlled to work in a practical environment, working is conducted in a practical working area which is matched with the virtual working area, therefore, a user does not need to pave a border line by hand to plan the practical working area of the automatic walking device, and work for planning the working area of the automatic walking device by the user is greatly simplified.

The present invention provides an optical glass having a refractive index (nd) and an Abbe number (vd) which are within an area surrounded by the straight lines which are drawn by connecting point A (nd=1.835, vd=46.5), point B (nd=1.90, vd=40.0), point C, (nd=1.90, vd=35.0) and point D (nd=1.835, vd=38.0) in a sequence of A, B, C, D and A as border lines in x-y coordinates shown in fig 1, in which X-axis is the Abbe number (vd) and Y-axis is the refractive index (nd), the area including the border line. The optical glass has low glass transition temperature (Tg), and suitable for precision mold pressing. The optical glass which has the refractive index (nd) and Abbe number (vd) within the above-described area, where the area includes the border lines, has the composition of SiO2-B2O3-La2O3-Gd2O3-Li2O-F system, the transition temperature (Tg) of 550 to 650 DEG C., and is free from lead, cadmium, thorium, Y2O3, P2O5 and TeO2.

The present invention provides thin injection molded plastic articles with an attractive, surface area of at least two different materials, such as leather, fabric, wood, metal or other semi-rigid surface material. These molded articles have desired combinations of thin dimensions, aesthetics and/or durability with the true feel of the real materials. The molded plastic articles thus have a plastic substrate component with a front decorative surface having at least two decorative surface areas of layers of different first and second materials having adjacent and connecting surface areas that are generally coplanar or continuous, including at the border line where the two surface layer materials meet. Relative to the front surface, at least a portion of the first material is located on top of and overlaps at least a portion of the second. In the process embodiment two surface material pieces are located in a mold cavity, the two materials together being located so as to each provide a surface area on the front side of the molded part. Optionally there is an adhesive and/or backing material on the back or non-decorative side of one or both surface material pieces. A molding plastic is injected into the mold that contacts and adheres to the back side of the surface material(s) and provides a molded on plastic substrate component. While the molding plastic is sufficiently fluid, pressure is applied to the cavity, preferably in an injection molding process, sufficient to compress and/or form the two different surface materials into a substantially coplanar or continuous surface and press the thicker overlapped area to a necessary depth into the plastic substrate component.

The invention discloses a method for converting a form in a portable document format (PDF) document into an Excel form. The method comprises the following steps of: identifying boundary position coordinates of text blocks in the form of the PDF document, performing row division and column division on the form in the PDF document according to the boundary position coordinates of the text blocks to acquire a plurality of divided areas, determining the divided area of each text block, and writing the text blocks in the divided areas into the corresponding Excel form, so that an aim of converting the form in the PDF document without border lines or with incomplete border lines into the Excel form without depending on the border lines of the form in the PDF document is fulfilled.

The invention discloses a method and a device for generating a three-dimensional crossing road model. The method comprises steps that road pipelines are acquired, and border lines of the road pipelines are determined; for adjacent road pipelines, a crossing point of two crossed border lines is determined; at least one sampling point is acquired from each crossed border line is acquired according to the crossing point; interpolation is carried out according to a spline curve formed by the sampling points of the border lines to acquire an interpolation point set; cutting points are acquired according to the sampling points, and the road pipelines among the cutting points are cut; a three-dimensional crossing road surface is formed according to the road pipeline after cutting and the acquired interpolation point set, lofting of the three-dimensional crossing road surface is carried out, and a three-dimensional crossing road model is generated. Through the method, the border lines of the adjacent road pipelines can be smoothly processed, and the data amount and road modeling cost can be reduced.

The invention discloses a road border detection method based on an infrared image, comprising the following steps: converting an input image into an image with specific scale and size by proper pretreatment; selecting a line segment more than a certain length under each threshold value by a threshold value exhaust algorithm; analyzing the line segment to obtain an accurate gradient; removing a second-order differential operator to obtain a weak line segment; removing a pseudo line segment obtained by the threshold value exhaust algorithm via the second-order differential operator; mutually combining two line segments to jointly extract the border line segment; and finally, obtaining a final road border according to a road border model. With the method, the road border can be accurately and uninterruptedly detected day and night, the method has the advantages of high instantaneity and robustness, and is easy to popularize to application fields of intelligent robot navigation, the active safety of automobiles, video monitoring and the like.

A method of controlling a picture quality of a flat panel display for automatically analyzing a shape, a size, and brightness of a display stain of indeterminate shape having an irregular pattern, and compensating brightness of the display stain of indeterminate shape on the basis of the analyzed result is disclosed. The method of controlling a picture quality of the flat panel display comprises measuring brightness of a display stain, which is generated on a flat display panel, at a vertical direction and a horizontal direction, respectively; imaginarily dividing the display stain in a predetermined distance along a direction that a brightness change is large among the vertical direction and the horizontal direction in accordance with the measured result; detecting edge points where divided border lines of the divided display stains and an edge of the display stain are joined; determining compensation values, which are applied to a plurality of compensation applying surfaces that are defined by the edge points and the divided border lines within the display stain; and adjusting digital video data to be displayed at the compensation applying surfaces using the compensation values.