Abstract
Digital image data processing is mainly to input digital image data into a computer to complete the conversion of a continuous spatially distributed image model into a discrete digital model so that the computer can identify, process, and store the processing process of digital image information. Geographic information system (GIS) is a computer system that integrates multiple forms of information expression, and it integrates functions such as collection, processing, transmission, storage, management, analysis, expression, and query retrieval, which can quickly discover the spatial distribution of things and their attributes and can express the results accurately and vividly in various intuitive forms. Therefore, on the basis of summarizing and analyzing previous research works, this paper expounded the research status and significance of processing methods for digital image data, elaborated the development background, current status, and future challenges of the GIS technology, introduced the methods and principles of permutation matrix algorithm and subimage averaging method, constructed the processing model for digital image data based on GIS, analyzed the data structure and its database establishment for digital image, proposed the processing methods for digital image data based on GIS, performed the enhancement processing and calculation classification of digital image data, and finally conducted a case analysis and its result discussion. The study results show that the proposed processing methods for digital image data based on GIS can perform analogue-to-digital conversion of continuous images, complete the steps of sampling, layering, and quantization, and then encode the obtained discrete digital signal into the computer to form an in-plane collection of pixels; this processing method can also organically combine spatial information and image data and identify, process, and store digital image data from both spatial and attribute aspects. The study results of this paper provide a reference for further research on the processing methods for digital image data based on GIS.
Highlights
Digital image data processing is mainly to transform an image signal into a digital signal in certain forms and use a computer to implement the processing. e information source obtained by this technology is often a kind of two-dimensional data, and this kind of data generally requires very high computer storage space and speed [1]
Erefore, data processing personnel can use the information system to continuously improve the accuracy of information collection and do a good job in the collection of information and data, to provide a good reference and reference for the current digital development, and to meet the wide range of needs for digital images [4]
In the field of information science of Geographic information system (GIS), from the collection and input of geospatial data to the output of data, the whole process can be regarded as the processing of geographic information, and the functions of data processing can be classified into data editing and conversion, storage, analysis, organization, display, etc
Summary
Digital image data processing is mainly to transform an image signal into a digital signal in certain forms and use a computer to implement the processing. e information source obtained by this technology is often a kind of two-dimensional data, and this kind of data generally requires very high computer storage space and speed [1]. Geographic information system (GIS) is a computer system, with multidimensional data structure, which collects, stores, manages, analyzes, describes, and applies all or part of the earth’s surface and spatial and geographic distribution data, whose main function is to realize the collection, editing, analysis, statistics, and management of geospatial data [5]. If necessary, it can store various attributes of global or regional natural and social factors in a computer database according to geographic location. On the basis of summarizing and analyzing previous research works, this paper expounded the research status and significance of processing methods for digital image data, elaborated the development background, current status, and future challenges of the GIS technology, introduced the methods and principles of permutation matrix algorithm and subimage averaging method, constructed the processing model for digital image data based on GIS, analyzed the data structure and its database establishment for digital image, proposed the processing methods for digital image data based on GIS, performed the enhancement processing and calculation classification of digital image data, and conducted a case analysis and its result discussion. e study results of this paper will provide a reference for further researches on the processing methods for digital image data based on GIS. e detailed chapters are arranged as follows: Section 2 introduces the methods and principles of permutation matrix algorithm and subimage averaging method; Section 3 constructs a processing model for digital image data based on GIS; Section 4 proposes the processing methods for digital image data based on GIS; Section 5 conducts a case analysis and its result discussion; and Section 6 is the conclusion
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