Hierarchical coding and tracing method for image operation information

Abstract

The invention discloses a hierarchical coding and tracing method for image operation information. The method comprises the following steps: (1) obtaining the operation information; (2) encoding operation information; (3) updating the operation information; and (4) tracing the operation information. According to the invention, the image data operation information with a hierarchical structure is obtained, and the unified expression and coding of the image data operation information are realized by utilizing the outer product operation of geometric algebra and a multi-vector structure; based onthe code updating of the operation information node and the operation link, the intersection operator and the dimension operator are used to complete the operation of operation information tracing andthe like, the memory occupation of the tracing information is reduced, and the tracing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of geographic information, in particular to a hierarchical coding and source tracing method of image operation information. Background technique [0002] Image data is not only widely used in daily life, but also plays an important role in applications such as terrain analysis, image extraction, and overlay analysis in the field of geographic information. With the acceleration of image data dissemination, the increasing complexity of operation processing, the enhancement of image data protection awareness, and the requirement of transparency of data operation information, the traceability technology of image metadata and operation process has gradually become the focus of attention. The root of traceability technology is to record the evolution of image data workflow, data change information, and parameters of the operation process. The traceability of operation processing is a reproduction of the existing ...

AI Technical Summary

Problems solved by technology

[0003] The existing traceability technology is still in the exploratory stage. The richness and heterogeneity of image data types make the operation information of image data different in quantity, structure and name, and it is impossible to achieve a unified fusion expression

Most of the traditional traceability technologies filter the original data recorded during the operation process, but due to the multi-source heterogeneity of operation information, problems such as low search efficiency and missing traceability information are caused

Although the hierarchical structure coding method based on the operation method improves the search efficiency to a certain extent, it has the problem of large coding redundancy.

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