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610 results about "Model matching" patented technology

Pedestrian re-identification method based on global features and local features of attention mechanism

The invention relates to a pedestrian re-identification method based on global features and local features of an attention mechanism. The pedestrian re-identification method comprises the steps of respectively extracting the global features and the local features of pedestrians; in the global feature branch, taking the whole pedestrian feature image as input, sending the pedestrian feature image into a space attention mechanism module and a channel attention mechanism module, and fusing the feature representations of the two modules; in the local feature branch, horizontally and averagely dividing the pedestrian feature map into three parts, and inputting the three divided parts into a channel attention mechanism module to obtain the local feature of each part; sending the global feature and the local feature into a feature vector extraction module to obtain a feature vector for pedestrian prediction; and training the whole network to obtain a pedestrian re-identification model. According to the method, the global features and the local features of the pedestrian images are fully utilized, the attention mechanism is effectively fused, the pedestrian features have better discrimination ability, a good pedestrian re-identification result is obtained, and the model matching accuracy is improved.
Owner:ACADEMY OF BROADCASTING SCI STATE ADMINISTATION OF PRESS PUBLICATION RADIO FILM & TELEVISION +1

Pole tower model matching and visual navigation-based power unmanned aerial vehicle and inspection method

The invention discloses a pole tower model matching and visual navigation-based power unmanned aerial vehicle and an inspection method. In an unmanned aerial vehicle, a depth image of a front end of the unmanned aerial vehicle is acquired by a dual-eye visual sensor, distance between the unmanned aerial vehicle and a front object is further measured, a surrounding image is acquired by a cloud deckand a camera, the object is further identified, and the flight gesture of the unmanned aerial vehicle is controlled by flight control of unmanned aerial vehicle. The method comprises the steps of performing pole tower model building on different types of power transmission line pole towers; automatically identifying the power transmission line pole towers and pole tower types by the unmanned aerial vehicle during the flight process, matching and loading a pre-built pole tower model; performing visual positioning on the power transmission line pole towers by the unmanned aerial vehicle, and acquiring relative positions of the unmanned aerial vehicle and the pole towers; and performing flight inspection by the unmanned aerial vehicle according to optimal flight path. By the unmanned aerialvehicle, the modeling workload is greatly reduced, and the model universality is improved; and the inspection method does not dependent on absolute coordinate flight, the flexibility is greatly improved, the cost is reduced, and the power facility safety is improved.
Owner:NARI TECH CO LTD

Method for predicating remaining life of turbine engine based on degradation model matching

ActiveCN102789545AAchieve the predicted effectSpecial data processing applicationsFeature vectorState variable
A method for predicating remaining life of a turbine engine based on degradation model matching relates to a remaining life predication method for the turbine engine, and solves the problem that the predication effect cannot reach the predication requirement when a universal RUL (Remaining Useful Life) is adopted to predicate the remaining life of the turbine engine. The method comprises the specific steps as follows: step one, pre-treating data, that is, extracting a running state variable from the acquired data, acquiring a feature vector for a sensor, and fusing the running state variable and the feature vector to form a health factor; step two, building a degradation model base, that is, building degradation models by using the health factor, and forming the degradation model base by the degradation model groups; step three, evaluating the similarity, that is, matching a degradation track with the models in the model base and giving an RUL estimation to each model; and step four, fusing the RUL, that is, fusing by means of similarity weighting to obtain the final remaining life predication value according to the tested matching degree of the turbine engine and the model. The method for predicating remaining life of the turbine engine based on degradation model matching is applicable to the predication of the remaining life of the turbine engine.
Owner:HARBIN INST OF TECH

Feature and model mutual matching face tracking method based on increment principal component analysis

The invention discloses a feature and model mutual matching face tracking method based on on-line increment principal component analysis. The method includes the following steps: off-line modeling is performed on a plurality of face images to obtain a model matching (CLM) model A; key point detection is performed on each frame of a face video to be tracked, and a set of all key points and robust descriptors of the key points are combined to form a key point model B; key point matching is performed on each frame of the face video to be tracked on the basis of the key point model B to obtain an initial face gesture parameter set in each frame of the face images; the model A is used for performing CLM face tracking on the face video to be tracked; re-tracking is performed according to the initial face gesture parameter sets and initial tracking results; the model A is updated, the steps are repeated, and final face tracking results are obtained. The feature and model mutual matching face tracking method based on the on-line increment principal component analysis solves the problem of tracking losing occurred when variation between adjacent frames in a target image is large during CLM face tracking, thereby improving tracking accuracy.
Owner:INST OF AUTOMATION CHINESE ACAD OF SCI

Parking lot management system based on video technology

The invention provides a parking lot management system based on video technology. The system comprises an entrance and exit control system, a parking guidance system, a vehicle identification system, a security monitoring system and a user charge system. The entrance and exit control system realizes vehicle detection, card issuing, card reading, the obtainment of the image information of a vehicle, vehicle characteristic information matching, parking space information display and the control of a gate through an underground detection coil, and the automatic entering and leaving of the vehicle are realized. The parking guidance system finds an available parking space number suitable for the parking of a user according to the vehicle type of a parking user and gives a path indication to the user. The vehicle identification system provides vehicle model information for parking guidance and provides basic information for vehicle license plate comparison and vehicle model matching and color matching in vehicle release through calling the video collected by entrance and exit video acquisition equipment. The security monitoring system monitors the state in a parking lot in real time. The user charge system is responsible for the charging of parking fees.
Owner:防城港市港口区升聚科技有限公司

Mark point automatic registration method based on model matching

The invention discloses a mark point automatic registration method based on model matching. The method comprises the following steps of (1)obtaining image data containing mark points; (2) constructing a mark point model; (3) reading in the obtained image data, conducting anisotropic diffusion filtering on images, and automatically extracting a skin three-dimensional grid from the images; (4) adopting an ICP algorithm to be matched with the mark point model and the skin three-dimensional grid, and obtaining the coordinate of the center of each mark point on the skin three-dimensional grid in an image space coordinate system; (5) adopting the ICP algorithm to be matched with the center of each mark point of the image space and the center of each mark point of the actual space, obtaining a rotating matrix R and a translational vector quantity T between the image space coordinate system and the actual space coordinate system, and completing registration of the mark points. According to the mark point registration method, the multiple mark points can be rapidly registered, the obtained rotating matrix R and the obtained translational vector quantity T of the image coordinate system and the actual coordinate system are more accurate, manual interference is reduced, the precision of the registration of the mark points is improved, and the mark point automatic registration method has good robustness.
Owner:广州艾目易科技有限公司

Model predictive control performance evaluation and diagnosis method

The invention discloses a model predictive control performance evaluation and diagnosis method. The method includes the steps: calculating the real-time performance value Ji and the average form Jnew of a system; selecting a segment of a data set and making the segment a historical performance benchmark value J<hist><*>; comparing the Jnew with the J<hist><*> and obtaining a system performance index [gamma]<k><*>, determining that the system performance is good if the [gamma]<k><*> is close to 1, and moving to the next step if the [gamma]<k><*> is close to 0; calculating an interference error e<0>(k), a predictive error e(k) and a model quality index [eta], and determining that the reason of deterioration of the system performance is external factors or a controller factor, otherwise, determining a system model mismatch and moving to the next step; detecting autocorrelation of an information sequence e(k), and moving to the next step if the autocorrelation of the e(k) exists, otherwise, determining that the model matching degree is good; and since n corresponding to the minimal loss function is the class of the e(k), determining a process model mismatch if the class of the e(k) is greater than the class of a process model, otherwise, determining an interference model mismatch. The overall performance of the system can be evaluated and deterioration sources of the system performance can be positioned only through closed loop input and output data.
Owner:NANJING UNIV OF TECH
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