Content-based data retrieval methods for unmanned aerial vehicle spying images

A technology of image data and unmanned aerial vehicles, applied in the direction of electronic digital data processing, special data processing applications, instruments, etc., can solve the problems of complex original image data and cannot meet the user's retrieval needs, achieve efficient retrieval, improve retrieval efficiency, The effect of improving efficiency

Inactive Publication Date: 2015-11-18
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

Moreover, the original image data collected is relatively complex, with strong timeliness, more coordinate systems, and the fusion of various data, etc.
The traditional text-based information retrieval technology can no longer meet the user's retrieval needs

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  • Content-based data retrieval methods for unmanned aerial vehicle spying images

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Embodiment Construction

[0028] The specific implementation method of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] The content-based UAV reconnaissance image data retrieval method of the present invention allows inputting an image to find other UAV reconnaissance images with the same or similar content. The algorithm sorts according to the Hamming distance of the "fingerprint" sequence of the two images; the second sorts according to the similarity value of the color distribution of the two images.

[0030] Process such as figure 1 It includes the following steps:

[0031] Step 1: Obtain external images;

[0032] The user inputs an external drone reconnaissance image that needs to retrieve similar images. If the retrieval based on the perceptual hash algorithm is to be performed, go to step 2; if the retrieval based on the similarity value of color distribution is to be performed, step 3 is performed.

[0033] Step 2: Use the perceptu...

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Abstract

The invention discloses content-based data retrieval methods for unmanned aerial vehicle spying images, belonging to the technical field of image retrieval. Two content-based retrieval methods for the unmanned aerial vehicle spying images are realized in a data management system; in the first content-based retrieval method, sorting is carried out according to a Hamming distance of fingerprint sequences of two images on the basis of a perception hash algorithm for searching images with images; and, in the second content-based retrieval method, sorting is carried out according to a colour distribution similarity value of the two images by selecting colour characteristics of the unmanned aerial vehicle spying images. According to the invention, information retrieval can be directly extracted from contents of the unmanned aerial vehicle spying images; related text annotations of the images are unnecessary; characteristic extracting and index establishing in the invention can be automatically realized through a computer; therefore, the retrieval efficiency is greatly improved; the content-based data retrieval methods disclosed by the invention are capable of searching related images in a large unmanned aerial vehicle image data management system at a rapid speed; objects in the unmanned aerial vehicle spying images are unnecessary to understand and identify; and thus, quick content-based retrieval is concerned.

Description

technical field [0001] The invention belongs to the technical field of image retrieval, and in particular relates to a content-based retrieval method for unmanned aerial vehicle reconnaissance image data. Background technique [0002] The widespread use of UAVs will inevitably generate a large amount of reconnaissance image data. Therefore, how to effectively and uniformly manage these reconnaissance image data and provide efficient and practical data retrieval methods must have high research and practical value. [0003] In the field of UAV reconnaissance image retrieval, due to the characteristics of UAV reconnaissance image data collection, the image database has many overlapping images, and the amount of data is relatively large. Moreover, the collected original image data is relatively complex, with strong timeliness, more coordinate systems, and the fusion of various data. The traditional text-based information retrieval technology can no longer meet the retrieval nee...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/583
Inventor 丁文锐黄宇晴向锦武李红光
Owner BEIHANG UNIV
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