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738results about How to "Clear boundaries" patented technology

Image semantic segmentation based on global and local features of deep learning

The invention relates to an image semantic segmentation method based on global features and local features of deep learning. The method comprises the following steps: at an encoding end, the basic deep features of an image are extracted by using a convolution neural network model based on deep learning; meanwhile, the features are divided into low-level features and high-level features according to the deep of the convolution layer; the feature fusion module fuses the low-level feature and the high-level feature into the enhanced deep feature; the feature fusion module fuses the low-level feature and the high-level feature into the enhanced deep feature; after the deep feature is acquired, the deep feature is inputted to the decoding end; the cross-entropy loss function is used to train the network and mIoU is used to evaluate the performance of the network. The invention is reasonable in design, and uses the deep convolution neural network model to extract the global and local features of an image, fully utilizes the complementarity of the global features and the local features, further improves the performance by utilizing the stack pooling layer, and effectively improves the accuracy of image semantic segmentation.
Owner:ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION +1

Method and device for realizing photoelectrochemical micro-etch processing of masked electrode

InactiveCN101817108ARemoval doesn't happenHigh degree of finenessShock waveManufacturing technology
The invention provides a method and a device for realizing the photoelectrochemical micro-etch processing of a masked electrode, and relates to the micro processing field in the manufacturing technology. A masked electrode used by the invention comprises a glass substrate, an indium tin oxide (ITO) layer and a photoresist mask layer, wherein the conductive light-permeable ITO layer is used as a tool electrode for electrochemical processing and can be permeated by a laser beam, and the photoresist mask layer can limit the action zones of the laser beam and the electrochemical electrode to achieve the double effects of a beam mask and an electric field mask. When the laser beam permeates the masked electrode, a mask pattern is imaged on the surface of a workpiece, the force effect of a shock wave generated by the irradiation of the laser between the workpiece and the electrolyte enables the passivation layer to be removed by the generation of stress corrosion. Meanwhile, the workpiece material at the laser-irradiated part is removed by etching under the action of the photoelectrochemical reaction. The invention can effectively enhance the processing efficiency, the micro processing degree and the processing precision of the complex pattern, and is applicable to the micro processing of the conductive metal material.
Owner:JIANGSU UNIV

Method for manufacturing conductive graphene film through ink-jet printing

The invention relates to a method for manufacturing a conductive film, in particular to a method for manufacturing a conductive graphene film through ink-jet printing. Graphite or graphite derivatives are used as raw materials and ultrasonically separated in dispersant/ ethyl alcohol/dimethylformamide solvent to prepare graphene dispersion solution, and supernatant liquid is taken through centrifugation, and graphene powder is obtained after the supernatant liquid undergoes flocculation; the graphene powder is prepared into printing ink, the printing ink is injected into an ink box, and the printing ink is deposited on a preprocessed substrate according to a preset pattern through the ink-jet printing technology; the conductive graphene film is formed through thermal treatment at 200 DEG C to 350 DEG C. According to the method, the graphene is prepared through the liquid phase separation method, and the conductive graphene film is manufactured through the ink-jet printing technology. The manufactured film can be patterned and is high in electric conductivity and good in mechanical property. Equipment used for ink-jet printing is simple, operation does need to be performed according to an original template, complex patterns are easy to make, cost is low, and the method is expected to be used for replacing existing complex film coating and photoetching technologies under certain conditions.
Owner:SHENYANG INSTITUTE OF CHEMICAL TECHNOLOGY

High-resolution SAR image individual building extraction method

The invention discloses a high-resolution SAR image individual building extraction method, and the method comprises the steps: firstly carrying out domain ontology modeling through combining the imaging features of a high-resolution SAR image individual building and the characteristics of a complex morphological structure, and constructing an individual building body semantic model in a high-resolution SAR image; secondly obtaining image regions with the good homogeneity and clear boundary through employing SAR image segmentation based on an object, wherein the image regions are the basic processing units extracted by building base units; combining with the related rule of the building base units in the body model, wherein the extracted image object characteristics comprise regional features, shape features, geometric features, texture features, and topological features; forming the object expression of body semantic description according to the body semantic rule and the object features, guiding the image objects to be automatically recognized as the building base units, and achieving the large-scale individual building recognition which takes the semantic knowledge as the center. The method can extract a large-scale individual building in the high-resolution SAR image accurately and quickly.
Owner:WUHAN UNIV

Angiography image blood vessel segmentation method and system

The invention provides an angiography image blood vessel segmentation method and an angiography image blood vessel segmentation system. The angiography image blood vessel segmentation method includesthe steps of taking each pixel coordinate of a live image as a reference coordinate, selecting one pixel coordinate matched with the reference coordinate from a mask image and taking the pixel coordinate as a contrast coordinate; extracting sub images in the same size from the live image and the mask image respectively to form an image pair; inputting all the images to a dual-passage convolutionalneural network to output a first blood vessel segmentation image; extracting multiple images in different size from each reference image according to preset rules, inputting all the images in different size to a multi-scale convolutional neural network to output a second blood vessel segmentation image, and finally displaying the second blood vessel segmentation image. As the dual-passage convolutional neural network and the multi-scale convolutional neural network are utilized for achieving twice classification, blood vessels of the images displayed finally have defined boundaries and cleardetails, and during the whole process, full-automatic interaction is achieved with high efficiency.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Safeguard system for power secondary system

A safeguard system for a power secondary system comprises an application security equipment and system, a safety operation and maintenance system, a forward and reverse isolating device and a personal communication gateway, wherein the application security equipment and system is arranged in a production control area, the safety operation and maintenance system is arranged in the production control area, a production management area and a management information area, the forward and reverse isolating device is arranged between the production control area and the production management area, and the personal communication gateway is arranged between the production management area and the management information area. The production control area comprises a service module of a power secondary system real-time or quasi real-time service. The production management area comprises a service module for collecting and managing data in the production control area. The management information area comprises a service module for managing information. The power secondary system is divided again based on the technical feature and the deployment architecture of the power secondary system, the arrangement of safety protection is carried out based on the division of a safety area, the deep protection for the power secondary system is achieved from different aspects, and the safety of the power secondary system is improved.
Owner:CHINA SOUTHERN POWER GRID COMPANY +1

Test device for simulating marine environment dynamic and static combined concrete loading

The invention belongs to the technical field of marine engineering concrete material durability test equipment, and particularly relates to a test device for simulating marine environment dynamic andstatic combined concrete loading; compared with the prior art, the device has the advantages that 1, the structure is simple, the installation is convenient, the automation degree is relatively high,manpower and material and time cost are saved, and meanwhile, the overall control function of a control box and the real-time detection and recording function are realized, and the accuracy is improved; 2, an upper water level sensor, a lower water level sensor, a communication water pipe, a test box and a liquid storage box are matched to carry out a dry-wet circulation test, so that clear boundaries of an underwater area, a tidal area and a wave-splashing area can be ensured, the underwater area is always in the soaking environment, the tidal area is located in the soaking and drying environment, and the wave-splashing area is in a spraying environment; and 3, the characteristics of chemical and mechanical coupling and dynamic and static combined loading are considered, so that the testdevice is more suitable for the environment where the concrete is in service, and can be widely applied to the concrete durability test occasions.
Owner:QINGDAO TECHNOLOGICAL UNIVERSITY
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