6results about How to "Avoid noise effects" patented technology

The application provides a repositioning method, a storage medium, an electronic device and a program product, and relates to the technical field of positioning. The repositioning method comprises the following steps: if the pose of a movable device is lost, the first pose of each particle corresponding to the movable device and the pose corresponding to each key frame are determined; the second pose of each particle under a plurality of movement distances of the movable device is calculated based on the first pose of each particle; each second pose of each particle is taken as a query point, and a target pose most adjacent to the second pose is searched from the pose corresponding to each key frame; a target particle is determined from the plurality of particles based on the target pose of each particle; and the repositioning result of the movable device is determined based on the target particle. The application avoids the influence of noise under a single movement distance, guarantees the optimality and stability of the target particle, and can more accurately estimate the pose of the movable device.

This invention discloses a method for simultaneous measurement of atmospheric temperature and pressure based on Rayleigh-Brillouin scattering spectroscopy, belonging to the field of lidar. The method includes: emitting a laser in the atmospheric environment to be measured and acquiring the scattered echo signal of the laser; fitting the Rayleigh-Brillouin scattering spectrum of the scattered echo signal in the atmospheric environment to be measured; extracting the overall linewidth Γ of the Rayleigh-Brillouin scattering spectrum; and calculating the number of molecular scattered photons N. s ; will N s Substituting G1 and Γ into the inversion model yields the synchronous measurement results of atmospheric temperature T and pressure p; where G1 represents the atmospheric temperature and the overall linewidth Γ and the number of molecular scattered photons N. s The relationship between pressure and overall linewidth Γ and the number of molecular scattered photons N is expressed as follows: s The relationship between Rayleigh and Brillouin scattering spectra and atmospheric temperature and pressure is fully explored in this invention, establishing a new inversion model that enables accurate and synchronous measurement of atmospheric temperature and pressure.

The application provides a kind of unattended station personnel invasion identification method and device, the method comprises: the picture to be detected is input to personnel invasion identification model, obtains the invasion identification result of personnel invasion identification model output;Wherein, personnel invasion identification model includes image denoising network, feature extraction network, occlusion perception attention network and invasion prediction network, image denoising network is used to denoising sample picture, based on occlusion perception attention network is used to apply sample picture feature, determine the correlation between the occluded human body area and the unoccluded human body area in sample picture.The image denoising network is used to denoise the picture, so as to avoid the noise influence brought by natural environment such as wind, frost, rain, snow and fog to data source.In addition, through the occlusion perception attention network, the problem that human body occlusion caused by the invasion personnel climbing wall affects the invasion personnel identification can be avoided.

This application relates to the field of fuel pump fault diagnosis technology and proposes a CAN bus-based method for fault perception and diagnosis of aviation electric fuel pumps. The method includes: collecting the operating parameters and state characteristic parameters of the aviation electric fuel pump; decomposing the same operating parameters using a wavelet threshold denoising algorithm to obtain detail coefficient sequences of different wavelet decomposition layers; determining whether a fixed threshold method is used to obtain the wavelet threshold; if not, calculating the adjustment degree of the detail coefficients of the wavelet decomposition layer; combining the wavelet threshold determined by the fixed threshold method to obtain and reconstruct the detail adjustment coefficient sequence; obtaining the denoised operating parameters; using an anomaly detection algorithm to obtain the reconstructed state characteristic parameters; and using a pre-trained fault perception model to complete the fault diagnosis of the aviation electric fuel pump based on the denoised operating parameters and reconstructed state characteristic parameters for a preset duration. This application can improve the accuracy of aviation electric fuel pump fault diagnosis.

This invention provides a method for predicting lithographic imaging contours and related products. The prediction method includes acquiring a target design layout; generating a target directed distance field map corresponding to the target design layout using a pre-trained prediction model, the target directed distance field map reflecting the directed distance of any point to the nearest lithographic imaging contour; and extracting the lithographic imaging contour from the target directed distance field map to obtain a target lithographic imaging contour map. This method can effectively avoid the influence of noise in measured lithographic imaging images, enabling the prediction model to accurately obtain the mapping relationship between the input design layout and the directed distance field map of the measured lithographic imaging image, resulting in a high-precision target lithographic imaging contour map.

The application discloses a kind of based on the dual hand reconstruction method of multi-scale color information and depth information fusion.Utilize dual-flow feature extraction model respectively to extract monocular RGB-D image multi-scale color feature, left and right hand corresponding center point feature and multi-scale depth feature;Then use pyramid type depth fusion network to fuse multi-scale color feature, left and right hand corresponding center point feature and multi-scale depth feature, obtain left and right hand corresponding global fusion feature;Finally, according to left and right hand corresponding global fusion feature, using GCN decoder generates dual hand grid in camera coordinate system.The application can fully fuse color information and depth information to reconstruct both hands, reduce the blur effect in RGB image and the noise in depth image, greatly improve the reconstruction accuracy, and enhance the robustness of model;Meanwhile, the application can accurately reconstruct three-dimensional hand grid with real depth and scale in camera space, overcome the limitation of relying on root node output.