Method and device for generating blind watermark, medium and equipment
A technology for blind watermarking and watermarking information, applied in the field of information security, can solve problems such as poor compatibility, and achieve the effect of ensuring compatibility
Active Publication Date: 2021-03-02
BEIJING HAITAI FANGYUAN HIGH TECH
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- Description
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Problems solved by technology
[0009] Embodiments of the present invention provide a method, device, medium and equipment for generating blind watermarks, which are used to solve the problem of poor compatibility when generating blind watermarks for web pages
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[0045]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0046]It should be noted that the "multiple or several" mentioned in this article refers to two or more than two. "And / or" describes the association relationship of the associated object, indicating that there can be three types of relationships, for example, A and / or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an ...
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The invention relates to a method and device for generating a blind watermark, a medium and equipment. The method comprises: when a window creation request is received, obtaining watermark informationcorresponding to the window requested to be created, and generating a corresponding blind watermark picture according to the obtained watermark information; after picture information corresponding tothe generated blind watermark picture is transmitted to a browser client kernel, adding a layer of canvas to the top layer of the kernel canvas set, and drawing the blind watermark picture on the layer of canvas according to the picture information, so that the kernel canvas set is displayed in the created window, and the blind watermark picture is displayed in the created window. Since the layerof canvas drawn with the blind watermark picture is added to the top layer of the kernel canvas, if the window creation request corresponds to the webpage display request, the webpage content added with the blind watermark can be displayed through the browser client. When the browser client needs to open one webpage every time, the operations are executed, the compatibility of blind watermark adding can be guaranteed, and the blind watermark can be generated for any webpage.
Description
Technical field[0001]The present invention relates to the technical field of information security, in particular to a method, device, medium and equipment for generating a blind watermark.Background technique[0002]This section is intended to provide background or context for the embodiments of the invention stated in the claims. The description here is not recognized as prior art just because it is included in this section.[0003]A web page watermark can be understood as content such as text or logo (logo) added on the web page, used to declare the copyright of the web page content, and prevent the web page content from being illegally used by others.[0004]The watermark visible to the human eye is very easy to be modified due to its poor concealment and cannot effectively protect the copyright. The watermark that is invisible to the human eye (can be recorded as a blind watermark) has strong concealment, and can more effectively realize copyright protection and tracking without destr...
Claims
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Login to View More IPC IPC(8): G06F21/16G06T1/00
CPCG06F21/16G06T1/0021
Inventor 陈士震安晓江蒋红宇
Owner BEIJING HAITAI FANGYUAN HIGH TECH