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67results about How to "Reduce processing range" patented technology

Specific color human body detection method oriented to surveillance videos

The invention relates to a specific color human body detection method oriented to surveillance videos. The method includes the following steps that firstly, video files are read through a computer, and key frames of the video files are decoded to obtain image data to be processed; secondly, areas having moving targets are obtained through an improved background subtraction method; thirdly, a classifier trained in advance is adopted for detecting whether specified color human body targets exit in the moving areas; finally, human body areas are sampled to verify whether the human body areas meet color conditions. A strategy used for processing on the basis of the key frames effectively reduces processing resources, shrinks the processing range and improves the processing efficiency. Similarities of edge contours, obtained through different methods, of the same area are compared, and the frequency of the situation that a background is mistakenly taken as a moving target is reduced effectively. By the combination of the key frames, the background is updated only when the moving areas are detected, and the processing speed can be further increased. Color verification is conducted on the basis of sampling point HSV information, so that detection accuracy is further ensured, the analysis range is shrunk, and the processing speed is also taken into account.
Owner:NAT UNIV OF DEFENSE TECH +1

Monitoring-video-oriented masked face detection method

The invention relates to a monitoring-video-oriented masked face detection method. The method comprises the steps of: carrying out video frame skipping processing strategies on the basis of simple background difference value operation; realizing moving head and shoulder region detection on the basis of an improved background difference method; and detecting a masked face on the basis of a two-stage Haar classifier. By carrying out the video frame skipping processing strategies on the basis of the simple background difference value operation, the processing range is effectively reduced; the system overhead is reduced; and the processing efficiency is improved. A region with a head and shoulder image is judged to be an effective moving region; the condition that the background is detected to be a moving object by mistake is effectively reduced; by combining the frame skipping strategies, the background is only updated only when the existence of the head and shoulder moving region is detected; and the processing speed can be further accelerated, and the moving target extraction quality of the background difference method can be further improved. According to the Haar linear features of the common masked face, the training and the detection of a masked target are carried out on the basis of a binary image; the gray level distribution rules of training samples and a target to be detected can be intensified and emphasized; and an effect better than that of a pure gray level image is obtained.
Owner:NAT UNIV OF DEFENSE TECH

Pointer instrument detection and reading identification method based on mobile robot

ActiveCN110807355AImprove detection accuracyImprove the detection accuracy of small-scale targetsImage enhancementImage analysisEngineeringContrast enhancement
The invention relates to a pointer instrument detection and reading identification method based on a mobile robot. The method comprises the following steps: obtaining a deep neural network detection model M for a pointer instrument; the mobile robot moves to a designated place to obtain an original environment image containing the instrument equipment at present in a mode that the mobile robot carries a camera; S serves as system input and is transmitted to a deep neural network model M, whether an instrument exists in S or not is detected, the position of the instrument is framed out, an image in a frame is intercepted and subjected to height setting processing, the length-width ratio is not changed, and the processing result is represented by J; contrast enhancement is performed on the image, and a processing result is represented by E; local adaptive threshold segmentation is performed on the E to obtain a reverse binary image B; pointer extraction processing is performed based on aprobability circle; a central straight line L of the pointer part is extracted as pointing information of the instrument pointer; and a coordinate system is established based on a probability circlecenter projection algorithm and reading by an angle method.
Owner:TIANJIN UNIV

Image enhancement method and device suitable for endoscope and storage medium

The invention discloses an image enhancement method and device suitable for an endoscope and a storage medium, and the method comprises the steps: responding to an image enhancement starting instruction, converting a current frame image collected by a camera of the endoscope in real time into a gray-scale image, and obtaining the gray-scale values of all pixels in the gray-scale image; obtaining target area information input by a user, and determining a target area of the grey-scale map according to the target area information; obtaining a gray scale minimum value and a gray scale maximum value in a target area of the gray scale map, and respectively recording the gray scale minimum value and the gray scale maximum value as a first gray scale minimum value and a first gray scale maximum value; and performing gray scale equalization processing on pixels of which the gray scale values are in a first interval divided according to the first gray scale minimum value and the first gray scalemaximum value in the gray scale map, and obtaining and displaying an enhanced gray scale map. According to the invention, the enhancement effect and detail visibility of the target area in the videoimage acquired by the endoscope can be improved.
Owner:YUXIN TECH HUIZHOU

Road widening system and road widening method for collapsible yellow earth foundation layer

The invention discloses a road widening system and a road widening method for a collapsible yellow earth foundation layer. The road widening system for the collapsible yellow earth foundation layer comprises a collapsible yellow earth foundation layer, a lime earth changing and filling layer, filling layers, geogrids, a water stable layer of a to-be-widened road, a pavement of the to-be-widened road, micro rigid piles and a compacted cement soil pile wall. The collapsible yellow earth foundation layer, the lime earth changing and filling layer, the filling layers, the water stable layer of the to-be-widened road and the pavement of the to-be-widened road are sequentially distributed in a laminar manner from bottom to top; the compacted cement soil pile wall penetrates through the lime earth changing and filling layer and is longitudinally inserted into the collapsible yellow earth foundation layer; the one or more layers of geogrids are longitudinally paved in the filling layers; the micro rigid piles penetrate through the geogrids and are longitudinally inserted into an original embankment. The road widening system and the road widening method for the collapsible yellow earth foundation layer aim at implementing road widening for the collapsible yellow earth foundation layer, and the road widening system is reasonable in structural mechanical property, good in integrality and controllable in quality.
Owner:山西省交通科技研发有限公司

Positioning clamp used for titanium alloy ring-shaped casting and clamping method

The invention provides a positioning clamp used for a titanium alloy ring-shaped casting and a clamping method. The positioning clamp mainly comprises a rotating worktable, two floating V-shaped blockassemblies, three pin assemblies and one three-claw chuck. The titanium alloy ring-shaped casting is positioned through a clamp and is clamped to the surface of the rotating worktable. Three positioning pins are matched with the end face of the titanium alloy ring-shaped casting so as to limit the linear freedom degree of the titanium alloy ring-shaped casting in the height direction and two rotation freedom degrees. V-shaped blocks are matched with an elliptical structure on the titanium alloy ring-shaped casting to limit the circumferential rotation freedom degree of the titanium alloy ring-shaped casting. The three-claw chuck is matched with a circular inner hole of the titanium alloy ring-shaped casting to limit the linear freedom degree of the titanium alloy ring-shaped casting on the plane, and clamping is achieved. By means of the clamp, complete positioning of the titanium alloy ring-shaped casting is achieved, the clamp is suitable for front-face and back-face clamping of thetitanium alloy ring-shaped casting, and a servo motor arranged in a rotating worktable can be controlled to make the rotating worktable drive the clamp and the titanium alloy ring-shaped casting to rotate to the designated angle after clamping is completed.
Owner:WUHAN UNIV OF TECH

Overlapping cervical cell image segmentation method

The present invention discloses an overlapping cervical cell segmentation method. The method comprises a method for improving local adaptive nucleus segmentation and an overlapping cytoplasmic segmentation method. The local adaptive segmentation method comprises: solving a sub-image to obtain a gradient histogram, eliminating a block effect by using an equal interval interpolation method, and using the mathematical morphology to suppress image noise, so that the nuclear region can be completely and accurately segmented without omission. The overlapping cell segmentation method comprises: extracting overlapping cytoplasmic parts, performing watershed segmentation on the overlapping cytoplasmic parts, and using the similarity criterion to perform region merging. According to the overlappingcervical cell segmentation method disclosed by the present invention, the problems that the segmentation algorithm is inaccurate in segmentation and easily causes over-segmentation and under-segmentation are solved, the complete cell contour can be extracted, overlapping of cell edges caused by the excessive edge width can be avoided, the complexity of late merging can be reduced, a clearer and more complete cytoplasmic contour can be obtained, and the method is of great significance for cell image classification and pathological detection.
Owner:HARBIN UNIV OF SCI & TECH

Automobile driving characteristic evaluation and early warning method based on driving inclination

The invention discloses an automobile driving characteristic evaluation and early warning method based on driving inclination, which belongs to the technical field of automobile intelligent interaction. The invention aims at collecting real-time operation data of an automobile as original data for evaluating automobile driving characteristics, extracting the original data according to scenes and exerting the characteristic advantage that the driving inclination evaluates specific scenes in real time. The data complexity can be reduced by using a time sequence dimension reduction algorithm, andmeanwhile, time sequence characteristics implicit in the data are reserved; operation fragments are counted to obtain a high-frequency operation fragment database, and detailed driving characteristicbehavior description can be carried out; an HMM model is used for inclination identification, and an identification result has high credibility; by further calculating the camber value, the operationcharacteristics of all parties of a driving game can be compared; early warning information is obtained through quantitative and qualitative evaluation results, and the content is convenient to compare; the data are continuously updated along with the operation of the automobile, the real-time performance of the evaluation result and the early warning information is ensured, and the practicability is very high.
Owner:JILIN UNIV

Austenitic stainless steel pipe silencer connecting pipe and manufacturing method thereof

The invention discloses an austenitic stainless steel pipe silencer connecting pipe and a manufacturing method thereof. The austenitic stainless steel pipe silencer connecting pipe comprises a pipe body, an air inlet pipe segment, and a fixed pipe segment. The pipe body is in an irregular pipe shape. The air inlet pipe segment is welded to one end of the pipe body, and an adjusting assembly is connected between the fixed pipe segment and the other end of the pipe body. Sound attenuation holes are evenly distributed in the end, closed to the fixed pipe segment, of the pipe body. The adjusting assembly is used for adjusting opening and closing of the sound attenuation holes. After the adjusting assembly completes adjusting, the adjusting assembly is welded to the pipe body and the fixed pipesegment. The method comprises the steps that a, preparations are made before assembling; b, clamping is carried out; c, welding is carried out; and d, the silencer connecting pipe is taken down. Whenthe silencer connecting pipe is mounted, according to the environment where the silencer connecting pipe is used, the number of the sound attenuation holes closed by the adjusting assembly when usersput particular emphasis on the refrigeration effect is larger than the number of the sound attenuation holes closed by the adjusting assembly when users put particular emphasis on the noise reductioneffect, the emphasis of the silencer can be adjusted by adjusting opening and closing of the sound attenuation holes through the adjusting assembly according to different occasions, and therefore production efficiency is greatly improved, and production cost is reduced.
Owner:XINCHANG GREAT WALL AIR CONDITION PARTS

Lung cancer medical big data-based treatment pathway key node information processing method

PendingCN110618987ASolve the problem of different meanings of different sentencesReduce the size of the quantityRelational databasesBiostatisticsData compressionInformation processing
The invention belongs to the technical field of information data processing, and discloses a lung cancer medical big data-based treatment pathway key node information processing method, which comprises the following steps: performing multi-source data fusion on data in an existing biomedical data set, and selecting five biomedical databases from the Internet to obtain lung cancer related information; performing data cleaning, data disambiguation and data compression on the source data; converting the preprocessed data into an RDF format to form a knowledge network; taking entities representinggenes, proteins and the like as subjects and objects according to the definition of the RDF, and taking the relation between the entities as a predicate, so that unified organization and representation of data are realized; calling the formed RDF graph as a lung cancer knowledge network graph, and calculating the importance of nodes by adopting a PageRank algorithm to find key nodes on a lung cancer treatment pathway. The correctness of the method is verified, and a new research direction can be provided for a new lung cancer treatment method and a new lung cancer treatment medicine through in-depth research from diseases and genes.
Owner:NINGXIA UNIVERSITY
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