Image processing method and device, server and storage medium

Abstract

The embodiment of the invention provides an image processing method and device, a server and a storage medium. The method comprises the steps of acquiring a watermark image and an original image; processing the original image based on a preset first frequency domain algorithm to obtain a first frequency spectrum matrix; processing the watermark image based on the first frequency domain algorithm to obtain a second frequency spectrum matrix; embedding the second frequency spectrum matrix into the first frequency spectrum matrix to generate a third frequency spectrum matrix; and processing the third frequency spectrum matrix based on a preset second frequency domain algorithm to obtain a target image. Therefore, based on the image copyright protection of the hidden watermark, the hidden watermark information is added in the frequency domain, operations such as shearing, smearing, compressing and filtering can be resisted, and the image robustness is effectively improved.

Description

technical field [0001] The present invention relates to the technical field of image processing, in particular to an image processing method, device, server and storage medium. Background technique [0002] With the continuous development of computers and the Internet, the digitalization and networking of images has been promoted, the upload and download speed of images has been improved, and the threshold for image dissemination has been lowered. At the same time, the copyright of the image is violated, and the incidents of copyright infringement and piracy of genuine images are showing a rapid growth trend, which has brought huge economic losses to the authors of the images. Therefore, it has received more and more attention to realize the protection of image copyright and resist piracy and infringement by technical means. [0003] In related technologies, image copyright protection based on implicit watermarks adds implicit watermark information in the airspace, that is,...

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Problems solved by technology

[0004] Since the implicit watermark information is added to the least significant bit of the image pixel value, the clipping is equivalent to adding a layer of filter, which destroys the redundant information hidden in the spatial domain pixel, so adding a recessive watermark to the least significant bit of the image pixel value The watermark information cannot resist shearing. It is similar to operations such as smearing, compression, and filtering, and affects the pixel values ​​​​in the spatial domain. The image obtained in this way is less robust

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