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70results about How to "Avoid streaks" patented technology

A three-dimensional reconstruction method based on point cloud optimization sampling

InactiveCN109903379AAvoid streaksShorten the search scopeImage enhancementImage analysisParallaxPoint cloud
The invention discloses a three-dimensional reconstruction method based on point cloud optimization sampling and belongs to the field of computer vision. The objective of the invention is to solve theproblem that in the three-dimensional reconstruction process of dense point cloud, under the condition that the main texture characteristics are ensured, the reconstruction speed is low. According tothe method, a mean shift algorithm is mainly utilized to carry out region segmentation on a plurality of corrected images; an improved bidirectional DP algorithm is adopted; sequentially carrying outstereo matching on the same regions after the adjacent images are segmented to obtain a disparity map; secondly, eliminating interference noise of the disparity map by using bilateral filtering to obtain a plurality of dense depth point cloud maps, then obtaining main texture features through self-adaptive random sampling, removing smooth areas, finally calculating depth value estimation of eachpoint cloud, and extracting the main point cloud according to the sequence of the estimation values. According to the method provided by the invention, more obvious texture features can be obtained ata higher calculation speed, and the method has a wide application prospect in natural scene three-dimensional reconstruction.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Slurry filtration system used for power lithium ion battery of HEV/PHEV

The invention relates to the technical field of production of power lithium ion batteries, and particularly discloses a slurry filtration system used for a power lithium ion battery of HEV/PHEV. The system comprises a slurry flowing pipeline, a plurality of filters connected in series are arranged in the slurry flowing pipeline, the filters are in sequential connection according to a descending order of filter pore sizes, and a slurry flowing direction is formed; and the interior of each filter is provided with one screen or two or more parallel screens, a depth-type filter group is connectedin series with the tail end of the slurry flowing direction, the interior of the depth-type filter group is provided with a plurality of parallel filter elements, and the filter pore size of each filter element is smaller than the filter pore size of the screen. The system provided by the invention filters slurry until the particle size of the slurry is in a suitable range in a classified filtration manner, so that clogging of the screen is effectively avoided, the filtration process has high stability, and requirements for particle miniaturization of the slurry used for the lithium ion battery of the HEV or the HPEV are met; and filter screens with any specifications can adopted for free combination, which is flexible and convenient, and the system is convenient to assemble and disassemble, and convenient for large-scale production.
Owner:WANXIANG 123 CO LTD

Method for producing carboxymethyl cellulose salt for electrodes of nonaqueous electrolyte secondary batteries, electrode for nonaqueous electrolyte secondary batteries, and nonaqueous electrolyte secondary battery

The purpose of the present invention is to provide a carboxymethyl cellulose salt for electrodes of nonaqueous electrolyte secondary batteries, which is capable of achieving a good balance between prevention of defects such as streaks and pin holes on a coated electrode surface and excellent bonding strength to a collector or excellent bonding strength between active materials. A production method which comprises: (1) an alkali cellulose formation reaction step wherein a mixed solvent that contains an alcohol having 3 or less carbon atoms and water at a mixing ratio (mass ratio) of from 75:25 to 95:5 is used and the alkali concentration relative to water is 25-40% by mass; (2) an etherification reaction step wherein a reaction is carried out in the presence of an excess alkali of 0.2-0.5 mol per unit of an anhydroglucose of the cellulose; (3) a neutralization step wherein an acid is added after the etherification reaction so that the pH of the reaction mixture is adjusted to 6.0-8.0; and (4) a heating step wherein the mixed solvent is removed and an alkali is added after the neutralization step so that the pH of the reaction mixture is adjusted to 8.0-9.0, and subsequently, a heat treatment is carried out at 40-70 DEG C for 30-120 minutes.
Owner:DAI ICHI KOGYO SEIYAKU CO LTD

A molding device for optical glass and its production process

The present invention relates to a forming device of optical glass and its production technology, which belong to the technical field of optical glass melting. The forming device of optical glass and its production technology solve the problems of poor forming quality, easy generation of surface stripe and crystallization of a strip material of the optical glass with large aperture, the forming device comprises a bottom die, a top die, a heating device, a bottom die cooling channel, a top die cooling channel, a first temperature thermocouple and a second temperature thermocouple; the top die is in an U-shaped groove, the bottom die is a plane base plate, the top die and the bottom die are arranged together to form a glass forming cavity; the top die cooling channel and the second temperature thermocouple are arranged on the upper wall of the top die; the bottom die cooling channel is arranged in the plate of the bottom die; and the heating device and the first temperature thermocouple are arranged in the U-shaped groove at the lower part of the top die. The forming device solves the problems that the forming of the strip material of the optical glass is poor, the thickness is inconsistent, surface stripe and crystallization are easily generated, and has obvious effect for lanthanide optical glass with low viscosity and easy crystallization.
Owner:HUBEI NEW HUAGUANG NEW INFORMATION MATERIALS CO LTD

Polishing mechanism used for shaft

The invention belongs to the field of machine tools for grinding or polishing and specifically discloses a polishing mechanism used for a shaft. The polishing mechanism comprises a clamping device, a rack, abrasive belts, a transmission roller, a first drive roller and a second drive roller. The transmission roller is fixedly connected to the rack, the transmission roller is provided with a spiral strip-shaped slot along the roller surface, and the strip-shaped slot is internally provided with a plurality of rollers which are uniformly distributed along the spiral track; and the abrasive belts are arranged along the spiral strip-shaped slot in the transmission roller and matched with the rollers, one end, stretching out of the transmission roller, of each abrasive belt is wound on the first drive roller, and the other end of the corresponding abrasive belt is wound on the second drive roller. According to the polishing mechanism used for the shaft, through specific structures of the spiral strip-shaped slot in the transmission roller and the rollers, inclined arrangement and continuous transmission of the abrasive belts are achieved, through inclined polishing of the abrasive belts, strip-shaped polishing scratches are avoided, polishing is more uniform, and the polishing effect is better; and through intermittent reverse polishing, oneness of polishing textures on the surface of the shaft is avoided, and polishing is more uniform.
Owner:重庆普莱斯恩机械制造有限公司

Mutual-capacitance embedded-type touch screen

A mutual-capacitance embedded-type touch screen is provided. The embedded-type touch screen comprises a touch control unit array formed by a plurality of touch control units. The mutual-capacitance embedded-type touch screen is characterized in that each touch control unit is formed by a pixel electrode layer, a first dielectric layer, a second dielectric layer, a common electrode layer, a third dielectric layer and a thin film transistor array which are stacked in order. The common electrode layer of each touch control unit is divided into a driving area, a first suspension area, a second suspension area, a first shielding area and a second shielding area, the first shielding area and the second shielding area are respectively formed at two sides, which are back to each other, of the driving area, the first suspension area is formed at one side, of the first shielding area, being far from the driving area, and the second suspension area is formed at one side, of the second shielding area, being far from the driving area. With respect to the mutual-capacitance embedded-type touch screen, the capacitance value of a scan line on the juncture of adjacent touch control units is approximate to that of a scan line which is not positioned on the juncture, and the case that obvious stripes occur on the juncture of adjacent touch control units can be effectively avoided.
Owner:WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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