74results about How to "Good edge" patented technology

The invention discloses a remote sensing image cloud detection method based on a convolution nerve network, comprising steps of establishing a training sample set, generating a convolution nerve network classification model, extracting a super-resolution sub-area, generating a cloud probability graph, performing rough detection on a cloud area, and performing fine detection on the cloud area. Through the above arrangement, the remote sensing image cloud detection method can accurately detect the cloud area in the remote sensing image, and, for the remote sensing image having the complex background or the semitransparent cloud, can obtain a better detection result. As a result, the remote sensing image cloud detection method can solve problems of false determination and analysis which are caused by the cloud, and can facilitate the follow-up processing and analysis. The remote sensing image cloud detection method enables the cloud area in the cloud detection result to have a better rim, to have better robustness in a complex environment and can obtain a better detection result.

The invention provides a multilayer brazed diamond tool. The multilayer brazed diamond tool comprises a matrix and a multiple diamond composite layers combined with the surface of the matrix. The multiple diamond composite layers contain diamond particles, framework particles and alloy brazing filler. The diamond particles are disorderly distributed in the multiple diamond composite layers. According to the multilayer brazed diamond tool, the diamond composite layers of the tool contain the multiple layers of diamond particles, so that the service life can be prolonged; furthermore, each diamond composite layer contains a large amount of air holes, the air holes can store cooling liquid, contain chips, discharge chips, prevent burning damage and facilitate diamond exposure, and therefore the diamond tool is continuously sharp; besides, combination between the alloy brazing filler and the diamond is firm, the brazing filler is completely alloyed, so that the uniformity is good, and the performance consistency is high; in addition, the manufacturing technology of the multilayer brazed diamond tool is simple and free of limitation of the dimension and shape of the diamond tool.

The invention discloses an SAR image de-noising algorithm based on Primal Sketch classification and SVD domain improvement MMSE estimation. The problem that in the prior art, details are fuzzy during SAR image de-noising is solved. The method mainly comprises the steps that firstly, in the Primal Sketch algorithm, an energy image is improved by the adoption of a dual-neighbourhood contrast enhancement method, then the Primal Sketch algorithm is adopted for dividing SAR images into a non-edge class and an edge class; NLSVD decomposition is carried out on the pixel points in the two classes, a singular value matrix is estimated by the minimum mean square error criterion containing constriction factors, and inverse transformation is carried out to obtain the estimation value of the edge class and the estimation value of the non-edge class; finally, edge coefficients are calculated, and the boundary of the edge class and the boundary of the non-edge class are fused through the Butterworth fusion method to obtain a de-noising result. According to the SAR image de-noising algorithm, speckle noise in the SAR image can be effectively removed, and the edge and point target information is well kept.

The invention discloses a fuzzy clustering image segmentation method with plane as clustering center and anti-noise ability. The method comprises the following steps: firstly, defining an objective function, initializing various coefficients and thresholds in the objective function, and randomly initializing a membership matrix; minimizing the objective function to calculate and update the coefficients and fuzzy membership matrices of the clustering plane. calculating the value of the objective function based on the updated fuzzy membership matrix, when the absolute value of the difference between the objective function values of the two successive iterations is less than the termination condition or the method exceeds the maximum iteration number limit, the iteration ends, otherwise, theiteration continues to perform the updating, and each pixel point is classified and marked according to the criterion of the maximum membership, so as to complete the initial classification; The edgeof the image is extracted from the classification result, and the local window is selected to divide the membership degree again with the edge point as the center pixel. According to the fuzzy membership matrix of clustering output, the membership degree of data points belonging to a certain class is obtained, and each data point is classified and marked according to the maximum probability principle, and the image segmentation is completed. The method of the invention uses a clustering plane instead of a clustering center for image segmentation, can simultaneously consider the gray value information and the position information of pixels, obtains an ideal image segmentation effect, eliminates the influence of noise well, and improves the quality of image segmentation and the stability ofthe segmentation effect.

Direct metal deposition (DMD) is used to fabricate knife edges with extended service life. A metal alloy powder is deposited along a blank and melted with a laser beam so that the powder solidifies into a strip of material having a hardness and / or wear resistance greater than that of the starting material. The piece is then finished to produce a sharp edge in the solidified material. The powder may be melted while it is being deposited, or it may be melted after being deposited. A slot or groove may be formed in the blank with the metal alloy powder being deposited into the slot or groove. A hardened steel alloy powder is deposited onto a mild steel blank. For example, a tool steel or vanadium steel powder may be deposited onto a 1018 steel blank. An invention line-beam nozzle may be used for deposition and / or powder melting.

Methods, systems, and apparatus, including computer program products, feature receiving an image mask (1020) where the image mask identifies a first opacity value of pixels in a raster image (1010). The first opacity value ranges between a value representing foreground and a value representing background. Each pixel in the image has a color. A first boundary pixel is identified in the image. A second opacity value for the first boundary pixel is determined using a first local color model of opacity. The first local color model of opacity is determined based on the colors of the pixels in the image within a local neighborhood of the first boundary pixel.

The invention discloses a braze welding nickel base impregnated diamond bit for deep part solid rock drilling, and a manufacturing method of the braze welding nickel base impregnated diamond bit. A braze welding nickel base body mixture of the braze welding nickel base impregnated diamond bit is formed by sintering a nickel base casing, a thin metal wire and diamond, the diamond is impregnated into the sintering nickel base casing, the content of diamond accounts for 30 to 80 percent by volume, and the granularity is 35 / 60 mesh; the sintering nickel base casing comprises the following components in mass percent: 35 to 75 percent of nicochrome powder and 25 to 35 percent of iron powder; the diameter of the thin metal wire is 1.0 to 1.6 mm; a nickel base prealloyed brazing filler metal is used, the performance of a drill bit is improved greatly, the sintering temperature is lowered, and the diamond damage degree is lowered; the content of the iron powder is higher, and the cost of the drill bit is lowered; the thin metal wire is embedded, so that the abrasive resistance of the casing is lowered and diamond exposure and drilling hole deviation preventing are facilitated. The braze welding nickel base impregnated diamond bit provided by the invention is particularly suitable for deep part solid rock drilling, and is also suitable for shallow slippery formation drilling.

The invention discloses a method for classifying polarimetric SAR (synthetic aperture radar) images on the basis of Freeman decomposition and spectral clustering and mainly solves the problem that the existing unsupervised polarimetric SAR classification method is low in classification precision. The method includes the steps of subjecting each pixel to Freeman decomposition, and extracting volume scattering power, dihedral angle scattering power and surface scattering power of each pixel; applying the scattering powers and a coordinate of the pixel as input feature vectors of Mean Shift algorithm, and segmenting images by the Mean Shift algorithm to obtain M regions; selecting representative points of the M regions as input points for spectral clustering, subjecting each region to spectral clustering to obtain results of image pre-classification; and finally subjecting a whole image obtained by pre-classification to iterative classification through a Wishart classifier so as to obtain final classification results. Experimental results show that classification of the polarimetric SAR images by the method is better, and the method is applicable to unsupervised classification of various polarimetric SAR images.

The present invention allows an image to be processed corresponding to the mixture of a background image and an image of a moving object. A region specifying unit specifies a mixed region wherein foreground object components making up foreground objects and background object components making up background objects are mixed, and a non-mixed region configured of one of foreground object components making up foreground objects or background object components making up background objects, and outputs region information corresponding to the results of specifying. A region processing unit 5001 processes input images for each of the regions specified by the region information. The present invention can be applied to image processing devices for processing images.

The invention discloses a preparation method for a diamond fiber grinding wheel and a section mold. The preparation method for the diamond fiber grinding wheel comprises the following steps: step 1, preparing a grinding wheel section: uniformly fixing strip-shaped diamond fiber to the periphery of the designed section mold, wherein one end of the diamond fiber points to the center of the section mold in radiation arrangement, then adding section mold to the carcass material to perform hot press formation, so that the grinding wheel section is prepared; step 2, performing overall hot press formation for the grinding wheel section: performing hot press formation for a plurality of grinding wheel sections and grinding wheel base material to obtain the diamond fiber grinding wheel. A plurality of rows of small holes are formed in the periphery of the section mold provided by the invention; the prepared diamond grinding wheel has a long service life, the diamond cannot fall off easily, the scrap containing capacity and dissipation capacity are increased, and heat damage of the workpiece can be effectively avoided or reduced.

The invention belongs to the field of hard and brittle material machining and provides a diamond drill bit composition used for sapphire bar drawing-out. The composition includes diamond and carcass powder. The carcass powder includes, by weight, 20-30 parts of superfine cobalt powder, 5-15 parts of nickel carbonyl powder, 0-20 parts of copper-tin pre-alloyed powder, 10-20 parts of superfine iron powder, 1-10 parts of phosphorus-copper powder, 5-15 parts of tungsten-copper pre-alloyed powder and 1-5 parts of beta-silicon carbide whiskers. The invention further provides a preparing method of the diamond drill bit composition used for sapphire bar drawing-out. A diamond drill bit used for sapphire bar drawing-out and prepared through the diamond drill bit composition used for sapphire bar drawing-out has the beneficial effects that both toughness and embrittlement are good, the diamond exposure is good, the drawing-out efficiency is high, the service life of the drill bit is long, and the drawing-out yield is high.

The invention relates to equipment and a process for removing burrs from group holes. The equipment comprises a frame, X, Y and Z-axis sliding tables, an ultrasonic auxiliary device and a magnetic disk, wherein the X, Y and Z-axis sliding tables are installed on the upper part of the frame, a rotary motor is installed on a sliding block of the Z-axis sliding table of the X, Y and Z-axis sliding tables, a main shaft of the rotary motor is connected with the ultrasonic auxiliary device, and the magnetic disk is connected to the bottom of the ultrasonic auxiliary device. According to the equipment, on the basis of an ultrasonic magnetic particle compound grinding technique, a grinding track plan is used in cooperation to remove burrs from one side of a workpiece of a group hole structure, compared with a traditional manual grinding mode, the removal quality and the removal efficiency of the burrs from the group holes are greatly increased, the grinding uniformity of hole edges is good, and the hole edges cannot be damaged; and the automatic burr removal can be realized, the working environment is improved, and the labor cost is reduced.

A wrapping paper storage device and dispenser supports a sheet of wrapping paper between the top wall of the dispenser and a flap member. This support continues throughout the cutting operation, so that curling, wrinkling or edge deformation of the wrapping paper is prevented. The flap member is provided with a flap slot in a hard polymeric sheet. An upper surface of the top wall of the dispenser is comprised of a hard flat polymeric sheet. The cutter traverses the flap slot when contacting the hard flat polymeric sheet, thereby severing the fully supported wrapping paper in a reliable, efficient manner. The cutter may be a separate cutting implement, such as a razor blade or knife. It may alternatively comprise an integral, spring loaded, slidable cutter that rides in the flap slot.

The invention discloses an RGB-D saliency object detection method based on a cascade improved network, and belongs to the technical field of image processing. Most existing RGB-D models directly aggregate the features from the CNN networks of different levels, and the noise and interference information contained in low-level features are easily introduced. The invention creatively provides a cascade improved structure, a saliency map generated by the features of a high-level part is used as a mask to improve the features of a low-level part, and then a final saliency map is generated by aggregating the improved low-level features. In addition, in order to eliminate the interference information of the depth map, the invention provides a depth enhancement module for preprocessing before thedepth features and the RGB features are mixed. According to the method, four evaluation indexes are used for carrying out experiments on seven data sets, and the results show that the method surpassesall current most advanced RGB-D saliency object detection methods.

In a vacuum chamber, the edge of each blade group is subjected to an ion beam treatment under predetermined conditions using a plasma ion gun and argon as a medium, and is subjected to a plasma ion implantation of nitrogen plasma under predetermined conditions using a plasma ion implantation gun. As a result, it is possible to provide a blade member having an edge of a cutting quality enhanced by increasing the sharpness, a blade member having an edge of a rigidity enhanced by increasing the hardness, and a working apparatus capable of working those edges efficiently.

The invention relates to a diamond bit and a manufacturing method thereof. The diamond bit comprises a work layer of an ordinary diamond bit and PCD sintered bodies which are distributed in the work layer, the PCD sintered bodies are columnar bodies, cuboids or cylinders and are distributed and arranged in a work layer matrix of the diamond bit, and the PCD sintered bodies account for 55-70 percent of the area of a work bottom lip of the diamond bit. The manufacturing method comprises the following steps: columnar PCD sintered bodies are precast by a hot press method; the diamond bit adopts secondary molding, the PCD sintered bodies are positioned in matrix alloy powder of the diamond bit in a graphite mould, and then the diamond bit is sintered by hot-pressing in a medium frequency electric furnace. The problem of difficult selection of the diamond bit aiming at rock stratum is solved. The diamond bit has the characteristics of good broad spectrum, good exposure, high efficiency and long service life. The diamond bit can be widely applied to geologic exploration, petroleum drilling, engineering investigation and geologic disaster control.

The invention provides a melt-casted diamond drill bit, belonging to the superhard material cutting tool technical field. The technical proposal of the invention is capable of producing melt-casted diamond core drill, diamond geological drill, diamond deep well drill, etc. compared with sintered diamond drill bit, the melt-casted diamond drill bit has manufacturing accuracy several times higher, and is wear resistant and sharp; compared with galvanized drill bit and brazed diamond drill bit, the melt-casted diamond drill bit has lower manufacture cost and longer service life; compared with dry drill, the abrasion resistance of the melt-casted diamond drill bit is several times higher; thereby, the melt-casted diamond drill bit is applicable for various drilling work, such as the drilling work in marbles, glasses, bituminous road surfaces, concrete road surfaces, reinforced concrete engineering components, and even in hard granitoid, and even harder and more brittle silicon crystal.

The invention discloses a diamond drill bit containing a grinding aid body structure. The diamond drill bit comprises a plurality of main working bodies arranged in the circumferential direction of the bottom lip surface of the drill bit and a plurality of grinding aid bodies arranged in the main working bodies, wherein the main working bodies are connected with the adjacent main working bodies through water gaps, the grinding aid bodies are uniformly distributed in the main working bodies at equal intervals, and the total area of the cross sections of the grinding aid bodies is 30%-38% of thetotal area of the main working bodies; each grinding aid body is a cylinder with the diameter of 3-5mm and the height of 12-15mm, the main working bodies play the role of crushing rocks mainly, and the grinding aid bodies play a role of crushing rocks in an auxiliary and indirect mode. The invention further discloses a 3D printing technical method of the diamond drill bit containing the grindingaid body structure. The diamond drill bit can effectively solve the problem of drilling in hard and dense rock layers.

The invention discloses a laser trimming device and method for a superhard abrasive forming grinding wheel. The device is sequentially provided with a reflection lens clamp, a reflection lens base, ahorizontal displacement adjusting table, a vertical displacement adjusting frame and a fixed support along the laser beam emitting direction; and is provided with a constant-angle rotating knob, a displacement lead screw and acoustic emission equipment. The device is a three-degree-of-freedom reflecting lens carrying device which can move in the x direction, the y direction and the z direction androtate around the axis; and a reflecting lens is regulated and controlled to reflect an emergent laser beam at a nearly vertical angle, so that laser energy acts in the horizontal direction and the vertical direction at the same time, and the shaping efficiency is improved by times. A method for coating a laser cross section by the lens clamp is designed, and a modification method for increasingthe laser scanning times in an odd number is provided, so that high modification efficiency and good grinding wheel outline appearance are ensured, and high speed and energy conservation are realized;and a model for sharpening a scanning track of a laser beam on the surface of the grinding wheel is established, and a method for controlling the optimal scanning times and performing layered laser scanning sharpening is provided, so that the effects that abrasive particles are excellent in edging and high in percent of pass are achieved.

Direct metal deposition (DMD) is used to fabricate knife edges with extended service life. A metal alloy powder is deposited along a blank and melted with a laser beam so that the powder solidifies into a strip of material having a hardness and / or wear resistance greater than that of the starting material. The piece is then finished to produce a sharp edge in the solidified material. The powder may be melted while it is being deposited, or it may be melted after being deposited. A slot or groove may be formed in the blank with the metal alloy powder being deposited into the slot or groove. A hardened steel alloy powder is deposited onto a mild steel blank. For example, a tool steel or vanadium steel powder may be deposited onto a 1018 steel blank. An invention line-beam nozzle may be used for deposition and / or powder melting.

The invention discloses a liver automatic segmentation method of abdominal CT sequence images based on a level set and a shape descriptor. The method includes: preprocessing an input image, and removing irrelevant organs and tissues; in combination with the gray shift field, constructing a level set energy function by using the correlation between adjacent slices of an abdominal CT sequence, and completing the automatic liver segmentation of abdominal CT sequence images by iterative strategy with the initial slices as the starting point; constructing the local and global shape descriptors to remove the over-segmented region and optimize the liver edge. The method of the invention can effectively segment liver regions in abdominal CT sequence images which are seriously polluted by noise andhave gray heterogeneity, can effectively avoid missegmentation of adjacent tissues around the liver, remove over-segmented regions caused by gray overlap, and improve liver segmentation accuracy.

The invention discloses a polylactic acid-based thermoplastic polyurethane modified polylactic acid composite material and a preparation method and application thereof in 3D printing consumables, which belong to the technical field of 3D printing. The material comprises the following raw material components in parts by mass: 60-90 parts of polylactic acid, 3 to 20 parts of polylactic acid-based thermoplastic polyurethane, 1-5 parts of an inorganic filler, 1-5 parts of a cross-linking agent, and 0.2 to 1 part of a stabilizing agent. The structural general formula of the polylactic acid-based thermoplastic polyurethane is shown in the specification, and a group R1 in the structural general formula is selected from polyalkyl ether, the group R2 is selected from one of straight-chain hexyl ormethane diphenyl, and the mesh number of the inorganic filler is 3000 to 5000 meshes. The composite material is good in 3D printing performance and high in printing precision.

The invention discloses a digital light processing 3D printing device and method based on nonlinear focusing multi-partition exposure. According to the device, a stepping servo motor and a planetary reducer are mounted on the side face of a focusing stop of a DLP projector to serve as an electric focusing system, and a synchronous belt serves as a transmission device so as to control precise focusing of the projector stop. Partitioned multi-exposure curing of the DLP projector is controlled by a control mainboard. In the device, a high-resolution electric focusing mechanism is additionally mounted to achieve the aims of light source focal point changing and uniform curing during exposure curing. Meanwhile, the device can achieve the aims of reducing shrinkage, improving part edge strengthand therefore improving forming quality through nonlinear focusing multi-partition exposure during curing. The invention mainly relates to a multi-exposure intelligent 3D printer for additive manufacturing, in particular to a projector capable of achieving automatic and continuous focusing and exposure and a partition multi-exposure function.

The invention discloses a diamond drilling bit with a plurality of sets of serrated structures automatically formed by weakened matrix with order positioning. The diamond drilling bit with a pluralityof sets of serrated structures automatically drill teeth formed by weakened matrix with order positioning comprises drill teeth and a steel body. The drill teeth are composed by working layer sheetswith the thickness of 0.2-1.5mm and interlayer sheets with thickness of 0.2-1.5mm. The working layer sheets are made from metal powder, tungsten carbide powder and diamond, and the interlayer sheets are made from graphite powder, ceramic powder and copper-tin alloy powder. Organic solvents are separately added for preparing slurry materials, and the slurry materials are poured to form a mold, andafter vacuum baking and low-temperature sintering, a sheet blank is formed; the weakened matrix particles are positioned and arranged orderly according to the designed concentration and are embedded in the predetermined position of the working layer sheet blank; and the working layer sheets and the interlayer sheets are alternately packed into a graphite mold at intervals to form the drill teeth,then the steel body is installed, and after hot pressed sintering, the drilling bit is formed. During the drilling process of the diamond drilling bit, a pie appears in a working lip face, at the sametime, the interlayer sheets are subjected to advanced abrasion, then a groove appears, and a working face of the drilling bit form a serrated shape; and during drilling, the exposure is fast, the efficiency is high, and the energy consumption is low.