City picture information authentication method based on streetscape

A technology of picture information and authentication method, which is applied in the field of image forensics and detection, can solve the problem of ignoring the number of correct matches, etc., and achieve the effect of convenient method, simple and easy to implement, and wide application prospects

Inactive Publication Date: 2012-07-04
TIANJIN UNIV
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AI Technical Summary

Problems solved by technology

Although this strategy reduces the influence of most geometric and photometric transformations, it has the disadvantage of sacrificing many correct feature points
Some improved methods such as spectral techniques, which are based on pairwise constraints, improve the accuracy of matching, but ignore the number of correct matches

Method used

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  • City picture information authentication method based on streetscape
  • City picture information authentication method based on streetscape
  • City picture information authentication method based on streetscape

Examples

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Embodiment Construction

[0037] The present invention is based on the image information authentication of Street View (the present invention selects Google Street View), input is some pictures with EXIF ​​attribute information, mainly including GPS information and direction information, extracts the relevant attribute information of the picture, and finds the corresponding Street View images, and then carry out the experiment of image content matching.

[0038]The EXchangeable Image File format (EXchangeable Image File format, EXIF) is specially set for the photos of digital cameras, and can record the attribute information of digital photos and the data when shooting, such as some parameters of the camera. EXIF was originally formulated by the Japan Electronics Industry Development Association in 1996, with version 1.0. In April 2010, the Japan Electronics Industry Development Association and the Camera and Imaging Products Association jointly released version 2.3. EXIF is applicable to most image fo...

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Abstract

The invention belongs to the technical filed of image authentication and detection and relates to a city picture information authentication method based on streetscape. The city picture information authentication method comprises the following steps of: extracting EXIF (Exchangeable Image File) attribute information of an original picture; positioning the geographical position of the original picture according to the extracted EXIF attribute information and extracting one streetscape picture at the position every a certain azimuth in a streetscape view of the corresponding geographical position; carrying out content matching on the original picture with the searched streetscape picture by adopting an SIFT (Scale Invariant Feature Transform) two-way matching method based on the characteristic of scale invariance; and carrying out image information authentication according to the matching result and judging the truth of EXIF longitude and latitude information of the original picture. The city picture information authentication method has the beneficial effects that the method adopted by the invention is simple and is easy to realize; whether the image information is tampered or not can be validated by means of the external existing image resources; and the matching precision is higher.

Description

technical field [0001] The invention belongs to the technical field of image forensics and detection, and relates to an image authentication method. Background technique [0002] With the widespread use of various image processing equipment and image editing software, ordinary users can perform various editing operations on images. However, the convenience of digital media editing makes it easy for malicious attackers to tamper or forge it, which may cause extremely serious economic and political problems (such as being nominated by the Democratic Party for the party on July 29, 2004). John Kerry, a candidate for the 2004 U.S. presidential election, was deeply influenced by photos circulated online of him and famous American movie star Jane Fonda attending an anti-war protest against Vietnam - an event that never took place. )loss. Therefore, digital image authentication has become a hot topic of research at home and abroad. It mainly solves the problem of distinguishing ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
Inventor 操晓春宣国静
Owner TIANJIN UNIV
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