Digital image recognising method based on characteristics

Abstract

This invention is a digital image attestation method based on half-perished water attestation. This invention puts the original image with half-perished water character as water mark, and embeds it into the image by structured method. When the image needs the attestation, picks up the water mark through judgment, that is, the error between of the character of the original image and the character of the attesting image is in the receivable range, in order to attest the image whether reliable. This invention can judge whether the process of the image is sophisticating or formally processing, and can precisely locate the position of the sophistication and belongs to the field of multi-media signal processing. This invention provides a new method to the digital image attestation.

Description

technical field

[0001] The invention is an image authentication method based on a semi-fragile watermark, capable of correctly judging whether image processing is malicious tampering or normal image processing, and accurately locating the tampered position, belonging to the field of multimedia signal processing. Background technique

[0002] With the digitization of the stored form of most multimedia, the media information can be easily modified and reproduced through the use of editing software. In some occasions, multimedia data must be proven to be credible, that is, it has not been maliciously tampered with. There are some deficiencies in the application of traditional information integrity protection technology based on digital signature to multimedia information. For example, it is too sensitive to normal signal processing (such as data compression, signal filtering, etc.) and channel noise (such as wireless channels, etc.), and cannot locate the location of tampering...

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