35results about How to "Solve the technical problem of low detection accuracy" patented technology

The invention discloses a detection method and device for similar video files. The method comprises the following steps of obtaining an amount of key frames with the same fingerprint in the first key frames of a first video file and the second key frames of a second video file, wherein a ratio of the amount to the amount of the second key frames is recorded as a first ratio; obtaining the same video fingerprint sequence in the first audio fingerprint sequences of the first video file and the second audio fingerprint sequences of the second video file, wherein a ratio of the range of an audio fingerprint serial number in the audio fingerprint sequence to the amount of audio fingerprints in the second audio fingerprint sequence is recorded as a second ratio, and a ratio of the amount of audio fingerprints in the audio fingerprint sequence to the range of the audio fingerprint serial number in the audio fingerprint sequence is recorded as a third ratio; and according to at least one of the first ratio, the second ratio and the third ratio, judging whether the first video file and the second video file are similar or not. By use of the method, the technical problem in the relevant art that accuracy for detecting the similar video files is low is solved.

The invention provides a target detection method based on multi-source heterogeneous data cognitive fusion. The method is used for solving the technical problem of low target detection precision caused by a shielded target contained in an image in the prior art, and comprises the following steps of: preprocessing data; obtaining a training data set and a test data set; constructing a target detection model H based on multi-source heterogeneous data cognitive fusion; performing iterative training on the target detection model H based on multi-source heterogeneous data cognitive fusion; obtaining target detection results. On the basis of a target detection network, an input optical remote sensing image and an SAR image are fused, an optical remote sensing feature map and an SAR feature map after feature extraction are fused, and the detection results of the optical remote sensing image and the SAR image are fused, so that a target detection model learns the features of the SAR image andthe features of the optical remote sensing image, and the technical problem that the detection precision of the image containing a shielded target is low is solved.

The invention discloses an in-vehicle life body detection method, device and system and a storage medium. The in-vehicle life body detection method comprises the steps: collecting an in-vehicle imagethrough image collection equipment, carrying out the detection of the collected in-vehicle image based on a trained life body detection model, and judging whether a life body exists in a vehicle or not; if the judgment result is yes, determining whether a life body exists in the vehicle or not again through an optical flow algorithm; and if the re-confirmation result is that the life body exists in the vehicle, giving an alarm to prompt. The in-vehicle life body detection method solves the technical problem that in the prior art, the accuracy of detecting the life body in the vehicle is low, accurately and efficiently detects the technical effects that whether the life body exists in the vehicle locked by the vehicle lock or not, gives out an alarm, and avoids misjudgment caused by image matting and mask attacks.

The invention discloses a human face vivo detection method and device, a storage medium and a processor. The method comprises the steps of establishing a preset human face detection model, a preset human face recognition model and a preset vivo detection model; respectively training the preset human face detection model, the preset human face recognition model and the preset vivo detection model according to a human face vivo detection data set; respectively inputting a to-be-detected human face picture to the preset human face detection model which reaches the convergence state and the presethuman face recognition model which reaches the convergence state, so that a to-be-detected human face area picture, a human face identity feature corresponding to the to-be-detected human face area picture and a preset human face area picture corresponding to the human face identity feature are obtained; and respectively inputting the to-be-detected human face area picture and the preset human face area picture into two feature extraction branches of the preset vivo detection model which reaches the convergence state, so as to obtain a detection result of the to-be-detected human face picture. The technical problem of low detection precision in human face vivo detection in the prior art is solved.

The invention discloses a video analysis method and device, and electronic equipment. The method comprises the following steps: acquiring a hydrogenation video of a worker in a hydrogenation process;comparing the hydrogenation video with a plurality of standard key frames extracted through a preset standard video to judge whether the hydrogenation operation of the worker conforms to a preset hydrogenation operation specification or not; and when judging that the hydrogenation operation of the worker does not accord with the preset hydrogenation operation specification, sending an alarm prompt. The technical problem of low detection accuracy due to adoption of a mode of manually judging whether hydrogenation operation conforms to specifications or not in related technologies is solved.

The invention discloses a software detection method and device and electronic equipment. The method comprises the steps of obtaining a current permission set, a current operation code sequence set and a current function pair set of target software; according to the current permission set and the reference permission set, determining a permission feature vector of the target software; determining an operation code sequence feature vector of the target software according to the current operation code sequence set and the reference operation code sequence set; according to the current function pair set and the reference function pair set, determining a function call feature vector of the target software; and determining whether the type of the target software is a malicious software type or not according to the permission feature vector, the operation code sequence feature vector and the function call feature vector. According to the method and the device, the technical problem of relatively low accuracy of software detection in related technologies is solved.

The invention discloses a blast furnace sinter particle size detection method and system based on RGB and laser feature fusion, and the method comprises the steps: constructing a deep learning network of an encoder-decoder structure through obtaining an RGB data set and a laser data set, obtaining an RGB initial feature tensor and a laser initial feature tensor, constructing a multi-source feature weighted fusion sub-network at the last layer of the fusion branch, carrying out adaptive weighted fusion on the RGB initial feature tensor and the laser initial feature tensor based on the multi-source feature weighted fusion sub-network to obtain a fusion feature tensor, and inputting the fusion feature tensor into a decoding process to obtain a segmented image. The technical problem that the existing blast furnace sinter particle size detection precision is low is solved, the multi-source feature weighted fusion sub-network is added in the deep learning network of the encoder-decoder structure, the adaptive weighted fusion of the multi-source features can be realized, and the detection precision of the blast furnace sinter particle size is improved. The laser supplement effect is fully exerted, and the detection precision of the blast furnace sintered ore particle size is improved.

The invention discloses a face key point detection model training method and a face key point detection method. The training method comprises the following steps: acquiring a face sample image carrying preset face labeling information; inputting the face sample image into a Pnet network of an MTCNN network to obtain a face candidate box corresponding to the face sample image; inputting the face candidate frame and the face sample image into an Rnet network of the MTCNN network to obtain a face target frame corresponding to the face sample image; and inputting the face target frame, the preset face labeling information and the face sample image into an Onet network of the MTCNN network to obtain a trained MTCNN network model, and a key point regression function in the Onet network is a preset WingLoss function, when an existing face key point detection method is used for face detection, the problems of key point drifting is easy to occur, so that the face key point detection accuracy is relatively low are solved.

The invention provides a reagent management device and extraction equipment, and relates to the field of solid-phase extraction. The reagent management device comprises a box body, a reagent container, a weighing assembly and a controller. The weighing assembly is arranged in the box body. The reagent container is placed on the weighing assembly. The weighing assembly is connected with the controller. The weighing assembly of the reagent management device weighs the residual amount of a reagent without being influenced by fluctuations of the liquid level of the reagent, so that the detection precision of the residual amount of the reagent is high. Even if a capacitive liquid level sensor cannot reliably detect or even cannot detect the residual amount of the reagent with a weak dielectricconstant, the residual amount can also be accurately detected.

The invention relates to the technical field of distance sensor packaging, and provides a packaging structure and packaging method of a distance sensor. The packaging structure comprises a substrate, a light-emitting chip, a sensing chip, an insulating support and a light blocking glue wall assembly; the light blocking glue wall assembly comprises at least one of a surrounding glue wall and a separating glue wall, and the surrounding glue wall surrounds the side face of the substrate and the side face of the insulating support; and the separation glue wall is connected to the sensing chip, is located between a receiving end photosensitive area and a transmitting end photosensitive area, and is connected with the insulating support. According to the packaging structure and packaging method of the distance sensor, the light blocking glue wall assembly is adopted to prevent light leakage, the technical problem that an existing distance sensor is low in detection accuracy is solved, and therefore the detection accuracy of the distance sensor is improved.

The invention discloses a message identification system, method and device. The system comprises at least one collector which is used for extracting message features of collected messages, carrying out first feature matching on the message features and pre-stored virus features, and sending the feature matching successful messages to an aggregator; the aggregator which is in communication connection with the collector and is used for receiving the messages with virus features, carries out secondary feature matching on the messages through a preset feature set and sending the feature matching successful messages to a data processor; and the data processor which is in communication connection with the aggregator and is used for classifying the messages on which the secondary feature matching is carried out by the aggregator, and determining classes of terminals which send the messages. According to the system, the method and the device, the technical problem that the detection precision is low is solved.

The invention discloses a method, a device and equipment for detecting a high-voltage line, wherein the method comprises the steps of acquiring magnetic field strengths of a plurality of coils; basedon the magnetic field strength of the plurality of coils, determining the position of a high-voltage line; and displaying the position of the high-voltage line. The method, the device and the equipment settle technical problems of only capability of generating an alarm when a detector approaches the high-voltage line and low detecting accuracy in prior art.

The invention discloses a high-temperature fluid mass flow online detection method, device and system, and the method comprises the steps: synchronously collecting a front image of a high-temperature fluid in a positive direction and a side image of the high-temperature fluid in a side direction, carrying out the image processing of the front image and the side image, extracting a high-temperature fluid flow line according to the side image, according to the high-temperature fluid flow line, establishing prior flow velocity distribution along the high-temperature fluid flow line, establishing a displacement field of a first region of interest by using a cross-correlation method according to the prior flow velocity distribution, and obtaining the high-temperature fluid mass flow according to the high-temperature fluid sectional area and the displacement field of the first region of interest, so that the technical problem that the existing high-temperature fluid mass flow detection precision is low is solved. The sectional area of each point of the high-temperature fluid is calculated in real time by synchronously collecting the images of the high-temperature fluid in the positive direction and the side direction, meanwhile, the flow velocity and the sectional area of an interested area on the high-temperature fluid are cooperatively obtained through the front image and the side image collected in the orthogonal direction, and therefore real-time accurate measurement of the mass flow of the high-temperature fluid is achieved.

The invention discloses a method and device for determining road boundaries, a storage medium and an electronic device. Wherein, the method includes: acquiring the first point cloud data collected by the first radar on the vehicle for the first acquisition object on the target road, and the second acquisition of the second radar on the vehicle for the target attribute on the target road The second point cloud data collected by the object; the first point cloud data and the second point cloud data are converted to the target coordinate system to obtain the third point cloud data and the fourth point cloud data respectively; in the target coordinate system, according to The third point cloud data and the fourth point cloud data determine the target object used to represent the guardrail in the first acquisition object; determine the boundary of the target road according to the first point cloud data and the target object. The invention solves the technical problem of low road boundary detection accuracy.

The invention discloses an online detection method, device and system for the mass flow rate of high-temperature fluid. By synchronously collecting the frontal image of the high-temperature fluid in the positive direction and the side image in the side direction, image processing is performed on the front side image, and the high-temperature fluid is extracted according to the side image. According to the streamline of the high temperature fluid, the prior velocity distribution along the streamline of the high temperature fluid is established. The displacement field of the area of ​​interest is used to obtain the mass flow rate of the high-temperature fluid, which solves the technical problem of low detection accuracy of the mass flow rate of the existing high-temperature fluid. By synchronously collecting images in the positive and lateral directions of the high-temperature fluid, the cross-sectional area of ​​each point of the high-temperature fluid is calculated in real time. At the same time, the flow velocity and cross-sectional area of ​​the region of interest on the high-temperature fluid are acquired through the frontal image and side image collected in the orthogonal direction, so as to realize real-time and accurate measurement of the mass flow rate of the high-temperature fluid.

The invention discloses a system, method and device for message identification. Wherein, the system includes: a collector for extracting message features from the collected messages, performing first feature matching between the message features and pre-stored virus features, and sending the successfully matched messages to the summary The aggregator is in communication connection with at least one collector, and is used to receive the packets with virus features, and perform the second feature matching on the packets through the preset feature cluster, and send the successfully matched packets to the data processing. The data processor is connected in communication with the aggregator, and is used for classifying the packets after the second feature matching of the aggregator, and determining the terminal category for sending the packets. The invention solves the technical problem of low detection precision.

The invention discloses a fluid flow velocity measuring device based on a terahertz high-speed echo effect. The device comprises a terahertz echo acquisition module and a signal processing module connected with the terahertz echo acquisition module, the terahertz echo acquisition module is used for generating a source signal and a reference signal, and detecting terahertz echoes emitted by the source signal through fluid, and the signal processing module is used for obtaining the fluid flow velocity according to the terahertz echoes and the reference signals. The technical problem that an existing non-contact fluid flow velocity device is low in fluid flow velocity detection precision in a complex and severe environment is solved, the characteristic of high penetrability of terahertz waves is ingeniously utilized, and it is guaranteed that terahertz signals can be received in the complex environment, so the flow velocity of the measured fluid can be accurately measured; and meanwhile, the device has the non-contact characteristic, and has important significance for measuring the flow velocity of the fluid in a complex environment.

The invention discloses a device for fault arc detection and positioning in a mains supply environment. Comprising a high-speed AD acquisition module, a low-speed AD acquisition module, an isolation module, a signal conditioning module, a current transformer module, a switch module, a DA output module, a screen display module, a fault arc positioning analysis module, a fault arc detection analysis module, a fusion analysis module and a fault arc generation module, the DA output module is used for receiving a detection signal and sending the detection signal to the fault arc generation module, the fault arc generation module is used for generating a fault arc and generating a reflection signal when the detection signal encounters the fault arc, and the high-speed AD acquisition module is used for acquiring the detection signal generated by the DA output module and the reflection signal generated by the fault arc generation module. The technical problem that an existing arc fault detection device can only perform fault arc detection and cannot realize fault arc detection and positioning and fault arc type detection at the same time can be solved.

The invention discloses a detection method, device and equipment of a high-voltage line. Wherein, the method includes: acquiring the magnetic field strength of multiple coils; determining the position of the high-voltage line based on the magnetic field strength of the multiple coils; and displaying the position of the high-voltage line. The invention solves the technical problem that the prior art can only give an alarm when the detector is close to the high-voltage line, and the detection accuracy is low.

The invention discloses a detection method and device for controlling a driving mechanism and a cooking utensil. The method comprises the steps that in the heating process of the cooking utensil, a driving mechanism is controlled to work so as to drive a pressure limiting valve to act; obtaining change values of cooking parameters of the cooking utensil within a preset time period, the cooking parameters which comprises at least one of temperature and pressure; and determining whether the control driving mechanism works normally or not based on the change value of the cooking parameter. According to the invention, the technical problem of low detection accuracy of the control driving mechanism in the prior art is solved.

The invention discloses a fluid flow velocity measurement method based on a terahertz high-speed echo effect. The method comprises the steps: generating a source signal and a reference signal, detecting the terahertz echo, reflected by a fluid, of the source signal, obtaining a time-domain spectrum brightness deviation value according to the terahertz echo and the reference signal, establishing a time-domain spectrum brightness deviation-flow velocity relation model according to different time-domain spectrum brightness deviation values corresponding to different flow velocities, and obtaining the flow velocity of the fluid according to the time-domain spectrum brightness deviation-flow velocity relation model and the time-domain spectrum brightness deviation value corresponding to the to-be-detected fluid. According to the invention, the technical problem that the existing non-contact fluid flow velocity device has low detection precision on the flow velocity of the fluid in a complex and severe environment is solved; the characteristic of high penetrability of terahertz waves is ingeniously utilized, and terahertz signals can be received in a complex environment, so that the flow velocity of the measured fluid can be accurately measured; and the non-contact characteristic is achieved, so that great significance is achieved for flow velocity measurement of the fluid in the complex environment.

The embodiment of the invention discloses a dog face detection method and device. The method comprises the steps: carrying out normalization of an image, changing the size of the image, and transmitting the converted data into a backbone network for feature extraction; then sending a feature extraction result to an area generation module to generate a more accurate target object bounding box; performing target generation area pooling on the candidate target area and the feature map of the backbone network, sending to a predictor after passing through a flattening layer and two full-connection layers, calculating loss, filtering out a low-score detection object by using a maximum suppression method (NMS), and finally, performing generalized transformation on a prediction frame and an original image correspond to each other to form a detected image. The detection accuracy is very high for the pictures with multiple dogs in one picture, different sizes of dogs in the picture or very complex scenes, and the technical problem of low detection accuracy for the pictures and dog faces with the complex scenes in the related technology is solved.

The invention discloses an image processing method and device, a storage medium and a computer terminal. The method comprises the steps that a target image is acquired, and the target image comprises a target object; and detecting the target image by using a target detection model to obtain a detection result of the target object, the target detection model being obtained by training a pre-training model through a first training sample, the pre-training model being obtained by training the first training sample, and the first training sample being obtained by performing data enhancement processing on an initial training sample. The technical problem of low detection precision of a detection model obtained by training due to few training samples and low sample precision in related technologies is solved.

The invention discloses a microphone-based voice detection method and device. The method comprises the following steps of acquiring a first digital voice signal and a second digital voice signal, wherein the first digital voice signal is obtained by processing a first analog voice signal acquired by a first microphone, and the second digital voice information is obtained by processing a second analog voice signal acquired by a second microphone; analyzing the second digital voice signal to obtain a second background voice signal in the second digital voice signal; and obtaining an effective voice signal corresponding to a voice signal sent by a wire controller based on the first digital voice signal and the second background voice signal. According to the method and the device, the technical problem that the detection accuracy is relatively low due to the fact that the noise exists in a detection environment when the wire controller is subjected to voice detection in the related technology is solved.

The invention discloses a target detection method and device, a nonvolatile storage medium and electronic equipment. The method comprises the following steps: obtaining a plurality of feature layers of a target detection model, the plurality of feature layers comprising a first feature layer and a second feature layer, semantic information of the first feature layer being less than semantic information of the second feature layer; performing fusion processing on the first feature layer and the second feature layer in the plurality of feature layers to obtain a target detection layer, the fusion processing being used for enhancing semantic information of the first feature layer; and updating the target detection model based on the target detection layer. According to the invention, the technical problem of low detection precision of a traditional target detection model in the prior art is solved.

The invention provides a detection device for a lathe workpiece hole. The detection device comprises a supporting rod, a dial indicator, and a seat body, and further comprises an ejector rod mechanism, the supporting rod is provided with a side opening cavity and a first through hole, wherein the side opening cavity comprises a first cavity body and a second cavity body communicating with the first through hole, the cavity diameter of the first cavity body is larger than that of the second cavity body, a detection rod stretches into the first through hole in a sliding mode, one part of an ejector rod is internally arranged in the second cavity body, the side wall of the ejector rod is in contact fit with the head of the detection rod, the other part of the ejector rod sequentially penetrates through a sleeve embedded in the first cavity body and a locking nut arranged on the side wall of the supporting rod to be in contact fit with the workpiece hole to be detected, two spherical screws are symmetrically arranged on the side wall of the sleeve, the spherical portions of the spherical screws abut against the inner wall of the sleeve, and the spring sleeves the side wall of the portion, between the sleeve end close to the dial indicator and the wall of the second cavity body, of the ejector rod. Compared with the prior art, the detection device has the advantages that the detection precision is improved, meanwhile, the operation is convenient, and the detection efficiency is improved.

The invention discloses an industrial control system traffic anomaly detection method based on an OCSVM and a K-means algorithm, and the method comprises the steps: obtaining a normal traffic data set from an industrial control system through a traffic obtaining tool, carrying out the protocol analysis of the traffic data for each piece of traffic data in the traffic data set, so as to obtain the attribute of the traffic data and the attribute value, wherein all attribute values corresponding to the traffic data form attribute value vectors, the attribute value vectors corresponding to all the traffic data form a to-be-detected data matrix with the size of m * n, and dimension reduction processing is performed on the to-be-detected data matrix by using a principal component analysis (PCA) method to obtain a matrix after dimension reduction processing; and inputting each row in the matrix after dimension reduction processing into the trained single-class support vector machine OCSVM detection model to obtain a label value corresponding to the row, wherein the label values corresponding to all rows in the matrix form a label value column vector. According to the invention, the technical problem that the abnormal traffic is less or difficult to obtain in the existing traffic anomaly detection method of the industrial control system can be solved.

The invention discloses an Internet of Things equipment access detection method based on an SMOTE and a parallel random forest. The method comprises the following steps: obtaining a plurality of pieces of equipment fingerprint information of Internet of Things equipment, analyzing each piece of equipment fingerprint information to obtain a feature attribute value corresponding to the equipment fingerprint information, and constructing a feature matrix according to the feature attribute values corresponding to all the obtained equipment fingerprint information; inputting the feature matrix into a trained equipment identification classifier to obtain an output result, and querying a corresponding vulnerability and a type thereof in a local vulnerability library according to the output result; and judging whether the queried vulnerability is a medium-high risk vulnerability or not according to the type, and if so, forbidding access of the Internet of Things equipment, otherwise, allowing the access of the Internet of Things equipment. According to the invention, the technical problem that the detection accuracy of uncommon Internet of Things equipment is low due to the fact that Internet of Things equipment is diversified in variety and large in difference in an existing Internet of Things equipment access detection method based on machine learning or deep learning can be solved.