Method and system for tracing homologous image through watermark

A picture and watermark technology, applied in image data processing, image data processing, special data processing applications, etc., can solve problems such as destroying labels, and achieve the effects of good robustness, high accuracy and fast matching speed.
CN103294667AActive Publication Date: 2013-09-11SHENZHEN TENCENT COMP SYST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHENZHEN TENCENT COMP SYST CO LTD
Publication Date
2013-09-11

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Abstract

The invention discloses a method and a system for tracing a homologous image through a watermark. The method comprises the steps as follows: an image characteristic value stored in a watermark of a current image is acquired; and a homologous image matched with the image characteristic value is searched in a data base according to the image characteristic value. According to the method and the system, fault tolerance matching is performed by using the accurate characteristic value of the image, if the value can be matched with data in the data base, the image can be determined to a homologous image basically, the error rate is extremely low, and the accuracy is high; and the watermark of the image can also be used for performing tracing, the complexity of occurrence and reading of the watermark is smaller than that of the similarity identification; and the length of a characteristic string is far smaller than the similarity, so that the matching speed is higher.
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Description

technical field

[0001] The present invention relates to a homologous image tracking technology, in particular to a method and system for homologous image tracking through watermarking. Background technique

[0002] Images of the same origin refer to images of the same source and their variants on the same platform. For example, after a picture is delivered to a certain platform, and then re-distributed through various variants such as format conversion, cutting, etc., these pictures belong to the same source picture. If the same scene is photographed or painted by different people, it does not belong to the same source picture.

[0003] In the era of web 2.0, a large amount of data is generated by users. After a data source enters the Internet, it will produce variations due to the behavior of various users or systems during the dissemination process. For example, after a picture is placed on the Internet, it is easy to be compressed, cropped, formatted, added user inform...

Claims

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