Hierarchical fast image global positioning system (GPS) position estimation method

An image, fast technology, used in computing, computer components, special data processing applications, etc.

Inactive Publication Date: 2013-09-25
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the noise in the labels and descriptions attached to the image, and the addi...

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  • Hierarchical fast image global positioning system (GPS) position estimation method
  • Hierarchical fast image global positioning system (GPS) position estimation method
  • Hierarchical fast image global positioning system (GPS) position estimation method

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Embodiment Construction

[0053] The present invention is described in further detail below in conjunction with accompanying drawing:

[0054] see figure 1 : the scalable fast image GPS position estimation method of the present invention comprises the following steps:

[0055] (1) Processing of offline image library

[0056] The purpose of the offline subsystem is mainly to perform offline processing on a large-scale image library with geographic tags, so that it can be better applied to online image location estimation, so as to achieve the purpose of fast and effective GPS estimation. The offline subsystem mainly includes the following six aspects: 1) preprocessing of the image library, 2) description of the global and local features of the images in the image library, and 3) K-means clustering of images in the image library using global features; 4) Subdivide the class obtained by the first-level clustering according to the geographical location to obtain the second-level image group, 5) select th...

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Abstract

The invention discloses a hierarchical fast image global positioning system (GPS) position estimation method which includes: performing global feature clustering on images according to color texture global features for an on-line database, distributing the images obtained through clustering to second-stage small centers according to the shooting geological positions, and finally performing representative image selection on each clustering center. In a line system, a first-stage candidate class is selected according to the color texture features, the distance calculation is performed and a second candidate class is selected in the second-stage small centers contained in the first-stage candidate class according to the color texture features, and finally GPS position estimation is performed on eventually input images through a local feature confirmation method. By means of the hierarchical fast image GPS position estimation method, image retrieval speed can be effectively improved, and retrieval accuracy can be improved.

Description

technical field [0001] The invention belongs to the technical field of multimedia image processing, and relates to an image position estimation method, in particular to a scalable and fast image GPS position estimation method, and particularly relates to position recognition of scenery contained in an image. Background technique [0002] With the improvement of living standards, people are keen on traveling, and take a lot of pictures during the tour and upload them to picture sharing websites and social networks. Well-known picture sharing sites such as Flickr have uploaded 5 billion pictures in total. The number of pictures uploaded on social networks is even more astonishing. Facebook alone has reached 60 billion. In my country, the social networking sites Renren and Kaixin have become the main channels for uploading and sharing. At the same time, it is more and more convenient for people to collect various pictures of various scenic spots. Maybe people come across ima...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06K9/54
Inventor 李婧钱学明
Owner XI AN JIAOTONG UNIV
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