Mixed picture index construct and enquiry method based on key word and content characteristic and use thereof

A technology of mixing pictures and construction methods, which is applied in special data processing applications, instruments, electrical digital data processing, etc., can solve the problems of low efficiency, time-consuming, and low correlation of image index queries, and achieve improved precision and search The effect of low time and high correlation

Inactive Publication Date: 2009-06-17
XIAN JIAOTONG LIVERPOOL UNIV
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Problems solved by technology

[0008] The main purpose of the present invention is to provide a hybrid image index construction and query method based on keywords and content, which solves the problem of low corre

Method used

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  • Mixed picture index construct and enquiry method based on key word and content characteristic and use thereof
  • Mixed picture index construct and enquiry method based on key word and content characteristic and use thereof
  • Mixed picture index construct and enquiry method based on key word and content characteristic and use thereof

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Example Embodiment

[0035] Example

[0036] Open image index construction based on keywords and image content

[0037] Each picture file has a text description file that uniquely corresponds to it, and the text description file stores the text description and description of the corresponding picture. These text description files can be automatically generated by programs, or they can be generated by summarizing information such as the surrounding text of the picture during the process of web crawling.

[0038] Use I to represent the collection of pictures in the picture library, I={I 1 , I 2 , K, I n }, where n is the number of pictures. D is the set of description files corresponding to the picture files, D={d 1 , D 2 , K, d n }, where d i For the corresponding picture I i description of. Assume that a total of k image feature extraction methods are used in the system. Use V to represent the set of image extraction methods, V={V 1 , V 2 , K, V k }, where V j , J ∈ [1, k] is a feature extraction meth...

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Abstract

The invention discloses a picture index construction based on keywords and contents and corresponding searching method, wherein the index construction comprises: constructing the keywords inverted index based on keywords according to the picture describing explanation and the name describing explanation thereof; constructing the picture characteristic index based on content by extracting the picture characteristic vector. The searching method comprises: searching the keywords and the keywords set to perform mode matching to obtain a semantic-related picture set based on the searching request submitted by the user; searching in the picture characteristic vector index by the Hash method with characteristic vector sensitive on the applied position for sampling the picture characteristic to obtain a similar picture characteristic vector; returning the picture with high similarity based on the integrative result to the user. The invention can compromise the keyword index and the picture index, not only can use the keywords to improve the searching speed, but also can use the picture index to improve the searching result correlation degree, so that the precision ratio can be improved. The technical scheme can be applied to the searching field of the picture image.

Description

Technical field [0001] The invention belongs to the field of picture retrieval of information retrieval technology, and more specifically relates to a method for constructing and querying a hybrid picture index based on keywords and content and its application. Background technique [0002] Nowadays, with the rapid popularization of the Internet and the widespread application of digital photography, the number of pictures on the Internet has shown an explosive growth trend. In aerospace exploration, biomedicine, pharmaceutical and other fields, there are often a lot of pictures to be processed. How to quickly and accurately find and locate the required pictures in such an extremely large number of pictures has become an urgent problem to be solved. [0003] Traditional image retrieval borrows the keyword-based technology that is often used in document retrieval. This technology extracts and analyzes the keywords of the file names and text descriptions of the pictures, and establi...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/5838
Inventor 张楠
Owner XIAN JIAOTONG LIVERPOOL UNIV
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