Batch rapid acquisition method for sentinel image data
A technology of image data and acquisition method, applied in the field of communication, can solve the problems of acceleration, concurrency limit, no download data provided, etc., to achieve the effect of strong scalability
Active Publication Date: 2021-12-28
江苏天汇空间信息研究院有限公司
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Problems solved by technology
[0002] When downloading files on the official website of Sentinel Image, you can register an account and then directly query the download data on the website to download, or you can programmatically call the official API interface SentinelAPI to realize batch download of files; but the above methods are usually There are the following deficiencies: First, the official website of Sentinel Image only allows a single user to download at most two links at the same time, that is, files, and there is a limit on the number of concurrency; second, the official API can achieve up to 2000 links. Download, but a single user can only download two files at the same time; third, the official website and API do not provide the function of download acceleration; fourth, the official website does not provide the function of downloading data according to administrative divisions; fifth, the official offline data It cannot be downloaded directly, and each user can only download and activate up to 20 offline data per day
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[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0037] see figure 1 , the present invention provides a technical solution: a method for rapidly acquiring sentinel image data in batches, the method comprising:
[0038] Step S100: Using the time of the desired image, the range of the desired image, the data type of the desired image, and the cloudiness of the desired image as input conditions, obtain the metadata of the image data through programming through the official interface sentinel API provided by the...
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The invention discloses a batch quick acquisition method for sentinel image data, which comprises the following steps of: S100, acquiring metadata of image data by programming through an official interface sentinel API provided by a sentinel website by taking the time, the range, the data type and the cloud cover of a required image as input conditions; S200, generating a geojson file G1 from the metadata, creating a text file T1 at the same time, and starting to download related image data; S300, using an Aria2 open source downloading tool to help simplify the downloading process; managing the downloading process by using a user pool and a process pool; S400, reading the file name information of the geojson file G1, and comparing the file name information of the geojson file G1 with the file name information of the local file; recording a comparison result in the text file T1; S500, sequentially reading the text file T1 to judge the file downloading condition; and S600, managing the downloading of the video data on the basis of the obtained determination result.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a method for rapidly acquiring sentinel image data in batches. Background technique [0002] When downloading files on the official website of Sentinel Image, you can register an account and then directly query the download data on the website to download, or you can programmatically call the official API interface SentinelAPI to realize batch download of files; but the above methods are usually There are the following deficiencies: First, the official website of Sentinel Image only allows a single user to download at most two links at the same time, that is, files, and there is a limit on the number of concurrency; second, the official API can achieve up to 2000 links. Download, but a single user can only download two files at the same time; third, the official website and API do not provide the function of download acceleration; fourth, the official website does not prov...
Claims
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Login to View More IPC IPC(8): G06F16/51G06F16/53G06F16/58G06F16/11G06F16/25G06F21/31
CPCG06F16/51G06F16/53G06F16/58G06F16/116G06F16/25G06F21/31
Inventor 张业红顾行发黄祥志许王疆朱玉婷
Owner 江苏天汇空间信息研究院有限公司