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47results about How to "Reduce the impact of extraction" patented technology
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Method for quickly and accurately detecting and tracking human face based on video sequence
InactiveCN102214291AQuick calculationDetection speedCharacter and pattern recognitionPattern recognitionFace detection
The invention discloses a method for quickly and accurately detecting and tracking a human face based on a video sequence, which relates to the technical field of mode identification. The method comprises the following steps of: 1, extracting a video frame image from a video stream; 2, preprocessing the video frame image, namely compensating light rays, extracting skin color areas, performing morphological processing and combining the areas; 3, detecting the human face, namely representing the human face by using Harr-like characteristics and detecting the human face by using a cascaded Adaboost algorithm with an assistant decision function; 4, establishing the characteristics of the human face, namely detecting the area characteristics of the detected human face and the shape characteristics of the edge profile of the human face; 5, tracking the human face, particularly tracking the human face by using a human face area characteristic model when an intersection does not occur in a human face area, and further matching when the intersection occurs according to the shape characteristics of the edge profile of the human face; and 6, extracting the sequence of a human face image. By the technical method, the human face can be detected and tracked quickly and accurately on the basis of the video sequence.
Owner:云南清眸科技有限公司
Business card identification method and device
ActiveCN110135411AReduce the impact of extractionImprove robustnessCharacter and pattern recognitionRobustificationBusiness card
The invention provides a business card identification method and device, and the method comprises the steps: obtaining a to-be-identified business card image; inputting the business card image into acharacter detection model to obtain each text line area, wherein the character detection model learns and obtain a corresponding relation between image features and each text line area; and inputtingeach text line area into the character recognition model to obtain business card information corresponding to each text line area. According to the method, the text line areas in the business card image can be identified through the text detection model based on deep learning, the robustness is high, the influence of low-quality and noise data on text extraction can be reduced, and therefore the universality and the application space of the method are improved. Moreover, the text line areas are subjected to end-to-end recognition based on the deep learning character recognition model, single word segmentation is not needed, higher accuracy is achieved, higher recognition capability is achieved for various complex changes, and the universality and the recognition effect of the method are improved.
Owner:BEIJING UNIV OF POSTS & TELECOMM
High-resolution remote sensing image-based multi-index fusion landslide detection method
ActiveCN105989322AAvoid noise effectsSolve the problem of landslide identification and extractionCharacter and pattern recognitionTerrainPost disaster
The present invention relates to a high-resolution remote sensing image-based multi-index fusion landslide detection method, which comprises the steps of (1) acquiring a high-resolution remote sensing image and a stereoscopic image pair; (2) generating a digital elevation model and calculating terrain feature indexes; (3) preprocessing the remote sensing image; (4) conducting the multi-scale image segmentation for the remote sensing image; (5) selecting appropriate terrain feature indexes for different scale layers and obtaining the values of the terrain feature indexes; (6) conducting the fusion processing for terrain feature indexes and ground object feature indexes, and comparing each feature index with a preset rule set to realize the landslide detection. Compared with the prior art, the noise influence caused by the scattered distribution of landslide regions can be avoided, so that the landslide recognition and extraction problem caused by earthquakes or other natural damages can be solved. Therefore, the method provides support for the post-disaster reconstruction and restoration. The above feature indexes can reflect the features of a ground object within a selected region, and a threshold corresponding to the feature indexes is unique. Based on the combination of features and the determination of the threshold, the landslide region can be successfully extracted and studied.
Owner:TONGJI UNIV
Method for extracting and continuously enriching polysaccharides from culture media for cordyceps militaris
The invention discloses a method for extracting and continuously enriching polysaccharides from culture media for cordyceps militaris. The method includes steps of drying the rice residual culture media for the cordyceps militaris; carrying out superfine grinding; carrying out enzymatic hydrolysis by the aid of biological multi-enzyme systems; carrying out centrifugal filtration; controlling backflow; carrying out multifunctional membrane concentration and enrichment; carrying out spray drying; carrying out qualitative analysis and quantitative analysis. The method has the advantages that the method for quickly, efficiently and economically separating the cordyceps polysaccharides is created; the cordyceps polysaccharides are prepared by the aid of functional membrane separation technologies and green extraction technologies such as enzyme processes, accordingly, the purity and the quality of the cordyceps polysaccharides can be guaranteed, the cordyceps polysaccharides can be quickly enriched and concentrated, and the biological activity of the cordyceps polysaccharides can be guaranteed; the waste culture media for the cordyceps militaris can be effectively utilized, and accordingly resources and the costs can be saved; the method is suitable for large-scale industrial production; the content of the cordyceps polysaccharides in polysaccharide concentrated liquid obtained by the aid of the method by means of separation can reach 80% at least, and the product recycle rate can reach 85% at least.
Owner:XUZHOU HONGYU AGRI TECH
Control method and device for pipeline model reconstruction and upper computer
ActiveCN109583377AImprove rebuild efficiencyReduce the impact of extractionImage analysisCharacter and pattern recognitionPoint cloudModel reconstruction
The embodiment of the invention provides a control method and device for pipeline model reconstruction and an upper computer. The method comprises the steps that a first image and a second image are acquired from a multi-view visual map library; Preprocessing the first image and the second image respectively; Performing canny operator contraction processing on the preprocessed first image to obtain a two-dimensional center line point cloud of the first image; Applying a snake model force field to the preprocessed second image to obtain a pipeline edge of the second image; Performing polar lineconstraint processing on the pipeline edge according to the two-dimensional central line point cloud to obtain a central line point cloud of the pipeline edge; Obtaining a three-dimensional center line point cloud of the target pipeline according to the two-dimensional center line point cloud and the center line point cloud of the pipeline edge; And generating a pipeline model of the target pipeline according to the three-dimensional center line point cloud. According to the scheme of the invention, the upper computer reduces the pre-preparation step in the existing pipeline reconstruction through the method, and improves the pipeline reconstruction efficiency while ensuring the precision.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY +1
Method for extracting eyebrow area
InactiveCN102930259AReduce the impact of extractionAccurate extractionCharacter and pattern recognitionComputer scienceRight eyebrow
The invention discloses a method for extracting eyebrow areas. The method comprises the following steps: 1) graying a face image to be identified; 2) segmenting the image in accordance with the rule that the face is divided into three equal parts in length and into five parts in width, so as to primarily select the left and right eyebrow areas; 3) calculating the differences of the each row of adjacent pixel points of the primarily selected left and right eyebrow areas in sequence, and generating a difference curve of the gray value; 4) taking the maximum value and the minimum value of the difference curve of each row as the upper side edge and the lower side edge of corresponding eyebrows; and 5) gathering the upper side edge and the lower side edge, and extracting the eyebrow areas from the primarily selected left and right eyebrow areas according to the upper side edge and the lower side edge of the eyebrows. According to the method, the eyebrow area can be precisely extracted while the lighting influence is effectively reduced.
Owner:SHANDONG SYNTHESIS ELECTRONICS TECH
Human face contour extracting method
ActiveCN102968636AReduce the impact of extractionReduce difficultyCharacter and pattern recognitionPattern recognitionDemarcation point
The invention discloses a human face contour extracting method, wherein the difficulty of subsequent treatment is reduced by standardizing the size of an image to be treated; and the influence of illumination on human face extraction is reduced according to the human face natural quality of three parts and five holes and with dependence on the average contours of human faces. Therefore, the human face contour is fitted through the intersection point of a ray passing through the nasal tip with the human face contour and then by finding out a demarcation point; and the accuracy is higher.
Owner:SHANDONG SYNTHESIS ELECTRONICS TECH
SAR image registration method based on MRF image segmentation algorithm
ActiveCN106355576AImprove segmentation qualityImprove registration efficiencyImage enhancementImage analysisImage segmentation algorithmScale space
The invention provides an SAR image registration method based on an MRF image segmentation algorithm, and is used for solving the technical problem that an existing feature-based SAR image registration method is low in registration efficiency and poor in stability. The SAR image registration method comprises the following steps: segmenting an SAR image reference diagram and a to-be-registered diagram by using the MRF image segmentation algorithm; carrying out regional interception on the segmented reference diagram and the segmented to-be-registered diagram; respectively corresponding the intercepted segmented reference diagram image blocks and the intercepted segmented to-be-registered diagram image blocks into an SAR image reference diagram and a to-be-registered diagram; establishing SAR-Harris scale space of the SAR image reference diagram image blocks and SAR-Harris scale space of the to-be registered diagram image blocks; extracting SARSIFT feature points of the reference diagram image blocks and the to-be-registered diagram image blocks to form a matching point pair set; removing mismatched points by using a RANSAC algorithm; and optimizing the matching point pair set by using a mutual information method.
Owner:XIDIAN UNIV
Voice data extraction method and device
InactiveCN102592592AImprove accuracyImplement extractionSpeech recognitionSpeech identificationVoice data
The invention discloses a voice data extraction method and a voice data extraction device, relates to the field of voice identification and aims to solve the problem of inaccurate voice identification in the prior art. The technical scheme disclosed by the embodiment of the invention comprises the following steps of: acquiring an average noise value of the environment in which a voice device is positioned; after a user starts the voice device, segmenting a signal input by the user according to preset time to obtain at least one signal segment; and acquiring voice data from the signal input by the user according to the relation between an average audio value and the average noise value, which corresponds to at least one signal segment. The technical scheme provided by the embodiment of the invention can be used in a voice identification system.
Owner:SHENZHEN VCYBER TECH
Method for extracting agilawood high-quality DNA
The invention discloses a method for extracting agilawood high-quality DNA. The method includes steps: agilawood sample disinfection and impurity removal, liquid nitrogen grinding, warm bath, centrifuging, alcohol precipitation, washing dissolution and directional PCR amplification. High-quality DNA can be extracted from agilawood containing secondary metabolism substances like resin, especially from deeply-processed products (or residue) with high resin content and long formation (storage) time. Quality and quantity of agilawood DNA are improved, DNA can be extracted from the deeply-processedresidue, the method can be directly applied in studying molecular biology and traditional Chinese medicine identification science, and a new method is provided for agilawood species identification.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI HAINAN BRANCH
Device and method for extracting physical parameters of special environment on basis of resonance frequency tests
ActiveCN104749569AImprove receiving efficiencyImprove accuracyConverting sensor ouput using wave/particle radiationRadio wave reradiation/reflectionEngineeringMicrowave resonance
The invention discloses a device and a method for extracting physical parameters of a special environment on the basis of resonance frequency tests. The device comprises a transmitting unit and a receiving unit. The transmitting unit is located in the special environment, and the receiving unit is located in a conventional environment; the transmitting unit is communicated with the receiving unit via a transmitting antenna and a receiving antenna; a passive microwave resonance structure is arranged inside the transmitting unit in the special environment; the receiving unit at the normal temperature under the normal pressure is far away from the special environment. The device and the method have the advantages that the passive microwave resonance structure which is sensitive to the physical parameters is arranged in the measured environment, resonance frequencies of the resonance structure can correspondingly drift under the condition of indexes of the different physical parameters, frequency drift of the microwave resonance structure can be detected, and accordingly the physical parameters can be tested in the special environment by the aid of relations between the resonance frequencies and the physical parameters.
Owner:CHINA ELECTRONIS TECH INSTR CO LTD
ECG identity recognition method based on IWT and AGA-BP model
PendingCN112107310AReduce the impactHigh precisionPerson identificationSensorsEcg signalElectric signal
The invention discloses an ECG identity recognition method based on an IWT and AGA-BP model. The ECG identity recognition method specifically comprises the steps of 1, collecting and denoising electrocardiosignals; 2, positioning an R wave peak point of the denoised ECG signal by adopting a wavelet positioning method; 3, determining the position of a QRS wave group through the R wave peak point obtained in the step 2, and determining the peak points, starting points and ending points of the P waves and the T waves; and step 4, combining the peak points, the starting points and the ending points of the QRS wave groups, the P waves and the T waves obtained in the step 2 and the step 3 to obtain a feature vector, and then performing ECG signal identification by using the AGA-BP model. According to the ECG identity recognition method based on the IWT and AGA-BP model, the problem that in the prior art, the electrocardiosignal recognition accuracy is poor is solved.
Owner:XIAN UNIV OF TECH
Production method of high-transmittance glutamic acid
ActiveCN106380416AHigh purityHigh light transmittanceOrganic compound preparationAmino-carboxyl compound preparationMycoproteinFiltration
The invention belongs to the technical field of glutamic acid production, and discloses a production method of high-transmittance glutamic acid. The key technology comprises separating mycoprotein from a glutamic acid fermentation liquor through a disc centrifuge and carrying out a film filtration and activated carbon adsorption process to further separate mycoprotein and macromolecule impurities. Mycoprotein is subjected to spray granulation to produce mycoprotein feed, and a clear liquid is subjected to a concentration continuous iso-electric method to separate glutamic acid. The separated glutamic acid crystal is subjected to crystalloblastesis. The crystal undergoes a vacuum filter and is washed with clear water, impurities located in the crystal are removed through washing, and the wet glutamic acid is finally dried. The glutamic-acid-containing evaporated condensate water and washed crystal produced in the process are re-used for film filtration and taken as fermentation liquor washing water for cyclic utilization. The loss of glutamic acid is reduced, and the water cyclic utilization rate is increased.
Owner:HULUNBEIER NORTHEAST FUFENG BIOTECHNOLOGIES CO LTD
Radar multi-target identification method based on high-resolution one-dimensional (1D) range profile
PendingCN110412548AGood adaptabilityHigh probability of extractionRadio wave reradiation/reflectionICT adaptationMultiple targetDistribution characteristic
The invention relates to a radar multi-target identification method based on a high-resolution 1D range profile, and the method is mainly suitable for radar multi-target identification of a early-warning detection system. The method mainly comprises that data of the 1D image profile is preprocessed; an energy aggregation area is extracted from the 1D image profile; strong scattering points are extracted from the energy aggregation area of the 1D image profile; distribution characteristic of the strong scattering points is estimated; the radial length and attitude of the energy aggregation areaof the 1D image profile are estimated; and multi-target attribute of the radar is discriminated. The method is characterized by easy engineering realization, good multi-target identification effect and sufficient theoretical bases, and the problem in radar multi-target attribute identification of an air fleet target or a group target can be solved rapidly and effectively.
Owner:THE 724TH RES INST OF CHINA SHIPBUILDING IND
Method for extracting colorless pectin by using Jingxi Crataegus pinnatifida Bge
InactiveCN109105870AAvoid damageNo pollutionFood ingredient as thickening agentFood extractionAlcoholFireberry hawthorn
The invention discloses a method for extracting colorless pectin by using Jingxi Crataegus pinnatifida Bge, wherein the method comprises: raw material pretreatment preparation, leaching, concentration, alcohol precipitation, pectin preparation and other steps. According to the present invention, the leaching liquid is maintained in the acidic environment so as to effectively reduce the interference of the impurities in the leaching liquid on the pectin extraction; by adding the complex, the blocking on the pectin by the calcium ions and the magnesium ions in the leaching liquid is reduced; byselecting the Jingxi Crataegus pinnatifida Bge to extract the colorless pectin, the characteristic of the extremely low pigment content of the Jingxi Crataegus pinnatifida Bge can eliminate the decolorization step of the preparation process; and the galacturonic acid content in the pectin powder can reach more than 87%, the gelation degree can reach more than 171%, and the utilization rate of theraw material pectin can reach more than 92%.
Owner:GUANGXI FORESTRY RES INST
Method for improving efficiency of ferulic acid and p-coumaric acid separation
InactiveCN108168987AReduce the impact of extractionImprove extraction efficiencyComponent separationPreparing sample for investigationAcetic acidAcid hydrolysis
The invention discloses a method for improving the efficiency of ferulic acid and p-coumaric acid separation. According to the method, basic hydrolysis and acid hydrolysis are adopted in sequence to separate ferulic acid and p-coumaric acid from bagasse cell walls, and GC-MS quantitative analysis is carried out on the content of ferulic acid and p-coumaric acid. According to the method, a comprehensive method including basic hydrolysis and acid hydrolysis in sequence is adopted to separate ferulic acid and p-coumaric acid from bagasse cell walls, thereby eliminating interference of hemicellulose and lignin; ethyl acetate is taken as an extraction solvent, thereby obviously improving the yield of ferulic acid and p-coumaric acid; and GC-MS fast efficient quantitative analysis is carried outon ferulic acid and p-coumaric acid. The method establishes the foundation for efficient separation and industrial application of ferulic acid and p-coumaric acid.
Owner:GUANGXI UNIV
Watermark embedding method and apparatus, and storage medium
ActiveCN109309869AReduce the impact of extractionSelective content distributionMultiple frameComputer graphics (images)
The invention provides a watermark embedding method and apparatus, and a storage medium. The method comprises the following steps: obtaining a watermark video to be embedded; and embedding the same watermark value of the watermark into multiple frames of continuous images in the watermark video to be embedded. According to the watermark embedding method and apparatus provided by the embodiment ofthe invention, by redundantly embedding the watermark in the multiple frames of images of the video, after frame loss of the video, the complete watermark can still be extracted based on the multipleframes of images that are redundantly embedded in the watermark, thereby reducing the influence of frame loss on the watermark extraction.
Owner:NETPOSA TECH
Installing method for collapse prevention pipe of horizontal well section of mining area L-shaped ground well
ActiveCN111119748AReduce resistanceAvoid cloggingDrilling rodsGas removalMining engineeringHorizontal wells
The invention relates to an installing method for a collapse prevention pipe of a horizontal well section of a mining area L-shaped ground well and belongs to the field of mining area L-shaped groundwell coal bed gas extraction. At least one collapse prevention pipe unit and a variable diameter pup joint are provided, and ventilation holes are formed in the collapse prevention pipe units. The method comprises the following steps of calculation, wherein the number of the collapse prevention pipe units is calculated according to the length of the horizontal well section; pipe lowering, whereinthe collapse prevention pipe units and the variable diameter pup joint are lowered into the well in sequence through a drilling machine; separation, wherein a drill rod is rotated in the connecting thread loosening direction, and connecting threads on the variable diameter pup joint and the collapse prevention pipe units are separated; and lifting, wherein the separated variable diameter pup jointis lifted to the surface of the ground along with the drill rod. By means of the installing method, rock debris of collapse holes of the horizontal section of the mining area L-shaped ground well canbe supported to prevent hole blocking, the conical collapse prevention pipe can reduce the resistance when a collapse prevention pipe body enters the horizontal well section, and the rock debris in the horizontal well section is contained by a gap at a circular truncated cone and the tail end of the horizontal well section.
Owner:CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
Complete set of energy-saving roasting technology for regenerated lithium iron phosphate
ActiveCN110562948AReduce consumption costQuality improvementCell electrodesChemical industryCarbon coatingLithium iron phosphate
Belonging to the technical field of new energy, the invention discloses a complete set of energy-saving roasting technology for regenerated lithium iron phosphate. The complete set of energy-saving roasting technology for regenerated lithium iron phosphate includes the steps of: waste lithium battery disassembly, anode material ball milling, raw material powder mixing, mixture dehydration, roasting and melt impregnation, and drying grinding of premix: putting the obtained lithium iron phosphate premix into a mill and carrying out dry grinding for a certain period of time so as to obtain a lithium iron phosphate material. The technology provided by the invention can realize carbon coating of the lithium iron phosphate material with carbon-based glucose, improves the diffusion coefficient oflithium ions between two phases, increases the discharge capacity of the lithium iron phosphate anode material, and then improves the quality of the recycled lithium iron phosphate material, at the same time, protective gas involved in the roasting process is collected through a special structure of the material itself, so that the protective gas in the lithium iron phosphate roasting process canbe recycled, and the cost consumption of lithium iron phosphate regeneration and recycling can be reduced.
Owner:内蒙古圣钒科技新能源有限责任公司
Automatic screening method for diabetic retinopathy based on naive Bayes and support vector machine
ActiveCN111292285AReduce redrawing imagesReduce the impact of extractionImage enhancementImage analysisRadiologyNaive bayesian classifier
The invention discloses a diabetic retinopathy automatic screening method based on naive Bayes and a support vector machine, which comprises the following steps: preprocessing an original color fundusimage, and extracting a blood vessel image from the original color fundus image; redrawing the pre-processed image according to the blood vessel image, wherein a blood vessel pixel value in the pre-processed image is determined by non-blood vessel pixels in the surrounding area to obtain a blood vessel redrawn image for reducing the blood vessel contrast; extracting a candidate microaneurysm areafrom the vascular redrawing image, and then extracting features of the candidate microaneurysm; and outputting, by a naive Bayesian classifier, a mark matrix of the microaneurysm according to the candidate microaneurysm features so as to obtain the number of the microaneurysm; and giving, by the support vector machine, a glyconet disease detection result according to the preprocessed image and the number of the microaneurysm. The method can effectively avoid accurate segmentation of the blood vessel and the microaneurysm, the extracted features are simple and easy to operate, and whether a patient suffers from the diabetic retinopathy or not can be automatically detected.
Owner:CENT SOUTH UNIV
Rapid detection method for SAR image flood inundation area
PendingCN114519824AImprove processing efficiencyDetection speedImage enhancementImage analysisFlood controlRapid detection
The invention discloses a rapid detection method for an SAR image flood inundation area, and aims at the problems of low efficiency and slow response of a traditional flood detection method, the SAR image is enhanced, noise information is removed, gray features and texture features are extracted, a water area of the SAR image is segmented by using an FCM clustering algorithm, and the flood inundation area of the SAR image is obtained. A morphological filtering processing and connected domain analysis method is used to segment an adhesion area of a lake and a river, a length-width ratio and an area threshold value are set, pits and ponds and the river are removed, the lake is reserved, DEM topographic information is used to remove a shadow area generated by a mountain body, false alarm is eliminated, SAR images of two time phases before and after flood are compared, and the method is used to determine whether the flood occurs or not. By using an overlay analysis method and a space overlapping-based block parallel technology, the processing efficiency is improved, the detection speed of a flood inundation area is accelerated, the area, distribution and ground feature type information of the flood inundation area is quickly and accurately obtained, the change of the lake inundation area is detected, and a scientific basis is provided for flood control and disaster relief in time.
Owner:CHINA ELECTRONICS TECH GRP CORP NO 14 RES INST
Traditional Chinese medicine quality determination system based on near infrared spectroscopy
ActiveCN111175247AReduce the impact of liquid residueReduce the impactWithdrawing sample devicesMaterial analysis by optical meansBiomedical engineeringTraditional Chinese medicine
The invention discloses a traditional Chinese medicine quality determination system based on near infrared spectroscopy. The system comprises an extraction tank, a liquid pumping mechanism, a liquid storage cavity, a drawing cavity, a fine adjustment cavity and a detection mechanism, wherein a middle lower part of a side wall of the extraction tank is provided with a conduit in a penetrating and communicating manner, the liquid pumping mechanism comprises a catheter cover detachably connected with a catheter port and a dip pipe penetrating through the catheter cover, a drawing piston is arranged in the drawing cavity in a sealing and sliding manner, a fine adjustment piston is arranged in the fine adjustment cavity in a sealed and sliding mode, a front end of the drawing cavity, a front end of the fine adjustment cavity and the top of the other end of the liquid storage tank are communicated with one another, the detection mechanism comprises a detection container for bearing a to-be-detected sample from a sampling port, a near infrared spectrometer and a detection probe connected with the near infrared spectrometer, the detection probe is used for detecting the to-be-detected sample in the detection container, and the volume of the liquid storage cavity is larger than that of the detection container. The system has advantagest of effectively reducing influence of the liquid medicine in the flow path on detection of the next time period in the detection process of the previous time period.
Owner:通标标准技术服务有限公司
Method for extracting fustin from rhus punjabensis
The invention provides a method for extracting and purifying fustin from fruit of rhus punjabensis. The method comprises the steps of: smashing the fruit of rhus punjabensis, adding cellulase and aspergillus niger for fermenting degradation, conducting alkali treatment and extraction through reflux of alcohol and water, conducting filtering, conducting reduced pressure concentration on obtained filtrate until the filtrate is dried, dissolving the dried filtrate in ethanol, making the obtained ethanol solution to pass through a macroporous resin column, after eluting, conducting reduced pressure concentration on the obtained eluate to obtain a concentrated solution, and conducting crystallizing and recrystallizing to obtain the pure fustin product. Through an enzymatic method and alkali extraction, the extraction rate of the fustin is greatly improved, and the influence of the cellulose in the rhus punjabensis on the extraction is reduced; by combining column chromatography with crystallization for separation, the purity of the fustin is greatly improved, the operation steps of purification are simplified, and the production cost of the fustin is reduced.
Owner:长沙湘资生物科技有限公司
Vehicle-mounted voice recognition method, system and device and storage medium
PendingCN114387952AReduce workloadFacilitate voice recognitionSpeech recognitionIn vehicleEngineering
The invention relates to the technical field of voice recognition, in particular to a vehicle-mounted voice recognition method, system and device and a storage medium, and the method comprises the following steps: S100, collecting a voice signal; s200, preprocessing the collected voice signal to generate an effective voice segment; s300, performing feature parameter extraction on the effective voice segments to generate a test template; s400, comparing the test template with a pre-stored reference template by using a DTW algorithm, and generating a comparison result; and S500, generating an identification result according to a comparison result. By adopting the scheme, the effective voice segments in the voice signals can be recognized, and the isolated word recognition efficiency and accuracy are improved.
Owner:CHONGQING COLLEGE OF ELECTRONICS ENG
A complete roasting process for energy-saving regenerated lithium iron phosphate
ActiveCN110562948BReduce consumption costQuality improvementCell electrodesChemical industryLithium iron phosphateNew energy
The invention discloses a complete roasting process for energy-saving regenerated lithium iron phosphate, which belongs to the technical field of new energy. A complete roasting process for energy-saving regenerated lithium iron phosphate comprises the following steps: dismantling waste lithium batteries, ball milling positive electrode materials, Raw material powder mixing, mixing and dehydration, roasting and melt impregnation, dry grinding is expected, the obtained lithium iron phosphate is expected to be put into the mill, and dry grinding is carried out for a certain period of time to obtain lithium iron phosphate material, which can realize the utilization of carbon-based Glucose coats the lithium iron phosphate material with carbon, increases the diffusion coefficient of lithium ions between the two phases, increases the discharge capacity of the lithium iron phosphate cathode material, thereby improving the quality of the recovered lithium iron phosphate material, and at the same time through its own special The structure collects the protective gas during the roasting process, so that the protective gas during the roasting process of lithium iron phosphate can be recycled, and the cost consumption of regeneration and recovery of lithium iron phosphate is reduced.
Owner:内蒙古圣钒科技新能源有限责任公司
Infrared image sea-sky-line detection method based on linear lookup matrix
InactiveCN105931228AReduce computationLow time complexityImage enhancementImage analysisComputer visionSky
The invention discloses an infrared image sea-sky-line detection method based on a linear lookup matrix. The method comprises the steps: firstly carrying out column gradient calculation of an image in a large scale through customized template operation, and increasing the gray value of an image of a sea-sky-line region; secondly carrying out the processing of the image through employing a nonlinear segmentation method, and reducing the interference from water surface ripples and noise; finally carrying out the scanning of the image, generating the linear lookup matrix, and finding the maximum value of the matrix so as to locate the sea-sky-line position. The method is simple in implementation, is small in calculation amount, is clear and definite in physical significance, can detect horizontal and inclined sea-sky lines, and is easy to use in engineering. The test indicates that the method can effectively extract the sea-sky line in an infrared image, and has the certain anti-interference capability.
Owner:SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
A method for extracting high-quality dna from agarwood
ActiveCN108624588BAvoid unstable extractionIncrease the number ofDNA preparationBiotechnologyCentrifugation
The invention discloses a method for extracting high-quality DNA from agarwood. Agarwood of secondary metabolites, especially high-quality DNA extracted from high-resin content, long-term formation (storage) and deep-processing products (or residues). The invention not only improves the quality and quantity of the agarwood DNA, but also can extract the DNA from the deep processing residue, can be directly applied to the research of molecular biology and traditional Chinese medicine identification, and provides a new method for the identification of the agarwood species.
Owner:INST OF MEDICINAL PLANT DEV CHINESE ACADEMY OF MEDICAL SCI HAINAN BRANCH
A multi-indicator fusion landslide detection method based on high-resolution remote sensing images
ActiveCN105989322BAvoid noise effectsSolve the problem of landslide identification and extractionCharacter and pattern recognitionTerrainPost disaster
Owner:TONGJI UNIV
A method for extracting urban built-up areas by fusing nighttime light data and landsat8 OLI images
ActiveCN112989985BReduce the impact of spillover effectsReduce the impact of extractionCharacter and pattern recognitionVegetation IndexAtmospheric sciences
Owner:WUHAN UNIV
Business card recognition method and device
ActiveCN110135411BReduce the impact of extractionImprove robustnessCharacter and pattern recognitionText detectionBusiness card
The present invention proposes a business card recognition method and device, wherein the method includes: acquiring a business card image to be recognized; inputting the business card image into a text detection model to obtain each text line area; wherein, the text detection model has learned image features The corresponding relationship with each text line area; each text line area is input into the character recognition model to obtain the business card information corresponding to each text line area. This method can implement a text detection model based on deep learning to identify each text line area in the business card image, which is robust and can reduce the impact of low-quality and noise data on text extraction, thereby improving the versatility and performance of the method. application space. In addition, the text recognition model based on deep learning performs end-to-end recognition of each text line area without the need for word segmentation, which has a higher accuracy rate, and also has a stronger recognition ability for various complex changes. The generality and recognition effect of the method.
Owner:BEIJING UNIV OF POSTS & TELECOMM
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