5results about How to "Reduce rebuild time" patented technology

Applications such as online spatiotemporal analysis, network sharing and interoperability of spatial objects in the field of geology rely on the real-time and authenticity of vector data. The present invention discloses a deconstruction and adaptive transmission method for online network access and spatial analysis of large-scale vector data, which mainly solves the problems of large-scale vector data transmission efficiency and ensures the authenticity of transmitted data. The method for vector data deconstruction and adaptive transmission disclosed in the present invention uses vector elements as processing units, and includes four sub-processes: process one: server-side vector data deconstruction, process two: storage of vector data after deconstruction, process three: on-demand adaptive transmission of deconstructed vector data, and process four: transmission of deconstructed vector data to the client for reconstruction and assembly. The present invention also provides a system for vector data deconstruction and adaptive transmission in a network environment to ensure the implementation of the above method in practical applications. The present invention has application significance in the current real-time analysis, online calculation, real-time visualization and other aspects of vector data based on the Internet and cloud computing.

This invention discloses a method for reconstructing magnetoacoustic electromagnetic particle concentration images based on compressed sensing, belonging to the field of medical imaging technology. The method includes: acquiring voltage signals, reciprocal current density data, and vibration velocity data of the reconstructed region from the detection electrode based on a simulation model; constructing a linear equation between the voltage signal and the magnetic particle concentration distribution, and finding the optimal sparse basis; introducing a compressed sensing reconstruction method, constraining the magnetic particle concentration distribution through sparse priors, transforming the concentration distribution reconstruction problem into an optimization problem with regularization terms; solving the magnetic particle concentration distribution under the condition of consistent voltage measurement data; and plotting the solution based on the results. This invention enables rapid reconstruction of magnetoacoustic electromagnetic particle concentration images based on compressed sensing.

The invention relates to an ultrasonic imaging method and device, computer equipment and a storage medium. The method comprises the following steps: carrying out imaging scanning on a target object by adopting a preset number of divergent waves to obtain echo signals corresponding to the divergent waves respectively; the preset number of divergent waves comprise at least two divergent waves with different deflection angles; for each divergent wave, performing image reconstruction according to the echo signal corresponding to the divergent wave and a preset image reconstruction model to obtain a reconstructed image corresponding to the divergent wave; the preset image reconstruction model is obtained by correcting a frequency domain reconstruction model of the plane wave; and generating an ultrasonic image of the target object based on the reconstructed image corresponding to each divergent wave. By adopting the method, on one hand, the single scanning area is increased by using the divergent waves, the scanning times are reduced, and the phased array imaging frame rate is improved; and on the other hand, by correcting the frequency domain reconstruction model of the plane wave into the frequency domain reconstruction model of the divergent wave, the reconstruction calculation complexity is reduced, the reconstruction time is shortened, and the imaging efficiency is improved.

The application relates to a database backup machine incremental reconstruction idempotent retry method and device. The method comprises the following steps: dividing a reconstruction process into three stages of pre-preparation, intermediate transmission and post-closing, and allowing retry only in the first two stages; first calculating and persisting a master-standby common WAL consistency site common-checkpoint and a difference structure filemap, then sequentially copying a WAL, a serialized change-block mirror and a filemaptarget to a disk; after fault recovery, reverse serializing and continuing transmission, realizing incremental level idempotent retry; if the error context is the same for two times in succession, immediately converging. Through accurate retry control and state persistence, the application significantly reduces the full amount construction triggering probability, improves the data consistency guarantee capability, simultaneously has the non-invasive integration advantage, and can effectively improve the availability and operation and maintenance efficiency of a database system.

The present application relates to a method and device for scheduling image reconstruction tasks. The method is applied to a task management platform, and the method comprises: obtaining the dependency relationship between multiple first image reconstruction tasks of a target object. According to the dependency relationship, determining the scheduling information of the multiple first image reconstruction tasks. Based on the scheduling information, scheduling the reconstruction data corresponding to the first image reconstruction task on which the target image reconstruction task depends. It can solve the problem of waste of reconstruction resources when executing image reconstruction tasks in the prior art.