Data processing method and device in comparison system

Abstract

The invention provides a data processing method, which comprises the steps of: periodically loading characteristic data and information items thereof in a database to a local disk, and creating a current index; arranging and storing the loaded characteristic data in the local disk according to the current index to become local characteristic data; reading the local characteristic data in a physical internal memory to become internal memory characteristic data, wherein the arrangement and storage modes of the internal memory characteristic data are the same as those of the local characteristic data; searching the current index in the physical internal memory according to a comparison condition, and determining the internal memory characteristic data satisfying the comparison condition as first characteristic data; and locating the position of the first characteristic data in the physical internal memory. The invention also provides a data processing device used for realizing the data processing method, and the data processing device and method of the invention have the advantages of improving the comparison efficiency and comparison performance of the characteristic data so as to obtain a more accurate comparison result.

Description

technical field [0001] The invention relates to a comparison system, in particular to a data processing method and device in the comparison system. Background technique [0002] With the advancement of technology and the needs of society, the comparison system is gradually widely used in various industries. Since the comparison system is mainly based on the support of data, most of the current comparison systems are large-scale comparison systems or even ultra-large-scale comparison systems, such as the face feature comparison system in the portrait recognition system, and the fingerprint system in the fingerprint system. Feature comparison system. The data storage capacity of the comparison system can generally reach millions or even tens of millions, hundreds of millions, and the size of each piece of data is generally between several KB to tens of KB, so the total amount of data in the comparison system can generally reach Several GB to hundreds of GB. [0003] Such a ...

AI Technical Summary

Problems solved by technology

[0003] Such a large amount of data is stored in the database. If the database is directly used to search and compare feature data, the performance cannot meet the application requirements.

In actual comparison, even if disk files and memory are used for comparison, the comparison efficiency is still difficult to achieve satisfactory results, and a large number of hardware resources need to be configured, and the cost is high

[0004] The utility model patent with the patent No. ZL200720073042.3 discloses a portrait comparison system applied to the public security system, which effectively avoids the problem that the certificate-handling personnel use other people's information or apply for relevant certificates through false information

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