Picture watermark encoding method

Abstract

The invention relates to a picture watermark encoding method, which comprises the following steps of: 1, generating a watermark code, namely recording information with any length as watermark information, calculating a 32-bit number, and recording the number as the watermark code; 2, generating a watermark lattice diagram: generating a lattice picture for the watermark code, and recording the lattice picture as a watermark lattice, the watermark code being a 32-bit number; and 3, generating a watermark original image: flatly paving a plurality of parts of watermark dot matrixes for redundancy,splicing into a larger image, and recording the image as the watermark original image; 4, generating a watermark image: zooming the watermark original image according to the size of the image to be watermarked to form a new image, and recording the new image as the watermark image; 5, superposing the watermark on the original picture: superposing the watermark picture and the picture to be watermarked to form a final picture with the watermark. The watermark generated by the invention does not directly display characters, but adopts a dot-matrix watermark mode, so that the dot matrix cannot be restored into specific information by naked eyes, and the concealment is strong.

Description

technical field [0001] The invention belongs to the technical field of image processing, in particular to a picture watermark encoding method. Background technique [0002] In image copyright protection, image watermarking technology is often used, that is, to add the image provider's mark on the image, one is to indicate the source of the image, and the other is to prevent someone from misappropriating it. For example, pictures published on a large number of websites are often marked with the website's LOGO in the corner to indicate that the source and version of the picture belong to the website, which can serve as a clear warning to those who attempt to embezzle. Reposters will choose to give up using it based on legal risks. The current method is basically to simply add text recognizable to the naked eye in the four corners. However, if there is a higher requirement for image protection, only adding watermark text in the corner If it is not enough, the pirate can simply...

AI Technical Summary

Problems solved by technology

Reprinters will choose to give up using it based on legal risks. The current method is basically to simply add text recognizable to the naked eye in the four corners. However, if there is a higher requirement for image protection, only adding watermark text in the corner If it is not enough, the pirate can simply cut out the watermark area by cropping the image and then use it. In this way, it is difficult for the version side to prove the malicious attempt of the pirate, and it will not have a strong protective effect

In addition, there is another way to cover the text watermark on the entire picture, which solves the problem of embezzlement, but the large watermark area seriously affects the viewing experience of the image. If the text is printed on the entire picture, the original content Too much coverage makes it difficult to read the content on the image

The watermark is displayed in text, and the amount of information carried is relatively small. For example, only one company name can be displayed. If you want to display more text, it will affect the reading of the image content.

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