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Long and narrow map spot partitioning method and device, computer equipment and storage medium

A pattern, long and narrow technology, applied in the field of narrow and long pattern block method, device, computer equipment and storage medium, can solve the problem of different data throughput of computing nodes, unfavorable machine computing load balancing, narrow and long pattern area difference, etc. problems, to improve computing efficiency, prevent insufficient memory, and ensure stability.

Active Publication Date: 2019-04-19
CHINESE ACAD OF SURVEYING & MAPPING
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Problems solved by technology

[0005] Based on this, it is necessary to address the above-mentioned problems and provide a method, device, computer equipment and storage medium method, device, computer equipment and storage medium for the above-mentioned problems, so as to solve the problem of the area existence of narrow and long graphics spots in the prior art grid. Large differences lead to different data throughput of each computing node during parallel processing, which is not conducive to the load balancing of machine computing and affects the melting efficiency

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  • Long and narrow map spot partitioning method and device, computer equipment and storage medium
  • Long and narrow map spot partitioning method and device, computer equipment and storage medium
  • Long and narrow map spot partitioning method and device, computer equipment and storage medium

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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] It can be understood that the terms "first", "second" and the like used in the present application may be used to describe various elements herein, but unless otherwise specified, these elements are not limited by these terms. These terms are only used to distinguish one element from another element. For example, a first xx script could be termed a second xx script, and, similarly, a second xx script could be termed a first xx script, without departing from the scope of the present application.

[0032] Such as figure 1 As shown, in one embodiment, a method for block segmentation of long a...

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Abstract

The invention relates to the technical field of map drawing and map synthesis, in particular to a long and narrow map spot partitioning method and device, computer equipment and a storage medium. Themethod comprises the following steps: acquiring image spot data, and dividing a rule grid to decompose the image spot data into a plurality of sub-data sets; Identifying long and narrow spots in the sub-data sets, and respectively calculating the area sum of the long and narrow spots in each sub-data set; And based on the balance of the area sum, finely dividing the regular grid to complete the partitioning of the long and narrow spots. According to the balance of the area sum, the grids are finely divided; The method has the advantages that the method is suitable for parallel computing, the load balance of a computer is facilitated, the computing efficiency can be improved during large-data-volume computing, computing resources are saved, program crash caused by insufficient memory of thecomputer during computing is prevented, and the stability of data computing is guaranteed.

Description

technical field [0001] The invention relates to the technical field of map drawing and map synthesis, in particular to a method, device, computer equipment and storage medium for segmenting narrow and long map spots. Background technique [0002] With the increasing depth and breadth of the application of geographic national conditions census data, it is increasingly urgent to comprehensively reflect regional land use conditions from large-scale land cover data (patterns) to various small-scale data. The dissolving operation of long and narrow patches is a common operation in the automatic synthesis process of land use data. When the map changes from a large scale to a small scale, the long and narrow patches on the map have to be dissolved because they cannot be continuously perceived visually. The operation splits to adjacent tiles. The main steps of the melting operation are: (1) define the width standard threshold, and identify the narrow and long patch in a full-covera...

Claims

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Application Information

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IPC IPC(8): G06T17/05G06T17/20G06T7/11G06T7/62
CPCG06T17/05G06T17/20G06T2207/20021G06T7/11G06T7/62
Inventor 李成名殷勇武鹏达吴伟郭沛沛刘晓丽戴昭鑫
Owner CHINESE ACAD OF SURVEYING & MAPPING
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