An image file storage and management system and method based on hash grid index

An image file and indexing technology, which is applied in still image data indexing, still image data retrieval, special data processing applications, etc., can solve problems such as no engineering application

Active Publication Date: 2020-03-17
BEIJING AEROSPACE SPACE VIEW INFORMATION TECH
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Problems solved by technology

Therefore, although the grid index is highly valued in theory, there are almost no engineering applications in commercial general-purpose databases and spatial databases

Method used

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  • An image file storage and management system and method based on hash grid index
  • An image file storage and management system and method based on hash grid index
  • An image file storage and management system and method based on hash grid index

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Embodiment Construction

[0055] 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. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention belong to the protection scope of the present invention.

[0056] An image file storage and management system based on a hash grid index described in an embodiment of the present invention includes:

[0057] 1. The file header is used for the management of RPF file information. The fields of the file header layer are defined in the order of the RPF format itself, the image information pixel level, the image information image level, and the original meta information, so as to realize the tile and image web management;

[0058] 1.1 The file header mod...

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Abstract

The invention discloses a video file storing and managing system based on a Hash grid index. The video file storing and managing system comprises a file header used for managing RPF file information, a subpackage memory module used for solving index redundancy, a partition module used for concentrating subpackages into one data file and a Hash grid index module used for achieving tile creating, reading, updating and deleting of O(1) time efficiency and reducing collision between space data. The video file storing and managing system has the advantages that common defects of the Hash index are overcome through a static Hash technology, the tile Hash index with local redundancy is used for exchange limited sparse space with constant time, and namely the location time of a single tile is not prolonged along with increase of tile data particularly for video file access with a high requirement for efficiency. Range query and partial matching query operation in a Hash domain are effectively supported, the video file storing and managing system has the capacity of dynamic addition, and large-scale addition and deletion of tiles does not cause reforming of a Hash table.

Description

technical field [0001] The invention relates to the technical field of high-efficiency storage and management of massive image data files, in particular to an image file system and method based on a hash grid index. Background technique [0002] The high-resolution satellite remote sensing images of the whole country and the world have reached the data volume of PB level, the data is updated day by day, and the resolution is constantly increasing. Using pyramid tiles ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) to manage images is necessary for fast loading and display of map services. It is widely used in domestic and foreign Internet companies such as Google, Bing, Baidu, Sohu and so on. Now satellite remote sensing images have already reached a higher resolution of 0.5 meters, and the pyramid tiles of provincial and municipal images have reached tens of millions, with more than 800 million tiles in China. [0003] The tile data of the Global Image Pyramid is generally stored in extern...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/51
CPCG06F16/51
Inventor 高福东赵齐兵
Owner BEIJING AEROSPACE SPACE VIEW INFORMATION TECH
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