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Screen watermark generation method based on stain simulation, storage equipment and electronic equipment

A watermarking and screen technology, applied in image watermarking, image data processing, instruments, etc., can solve problems such as affecting the visual effect of the screen, smearing, etc., and achieve good application effects.

Pending Publication Date: 2022-03-18
HEFEI HIGH DIMENSIONAL DATA TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ming watermark is easy to add, but it will affect the visual effect of the screen display, and it is also easy to be smeared

Method used

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  • Screen watermark generation method based on stain simulation, storage equipment and electronic equipment
  • Screen watermark generation method based on stain simulation, storage equipment and electronic equipment
  • Screen watermark generation method based on stain simulation, storage equipment and electronic equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, the feature block is pre-set according to the following steps:

[0023] S221. For any display, make the entire screen display white and then take a picture of the display;

[0024] S222. Take pictures of multiple displays according to the above steps;

[0025] S223. Intercept dust, stains or dead pixel areas in the captured picture, and each dust, stain or dead pixel area is a feature block;

[0026] S224. Classify the feature block according to the size or shape of the feature block, and each matrix element corresponds to a type of feature block.

[0027] The feature blocks generated by this scheme are more random and realistic. In step S213, the "feature block corresponding to the matrix element" is obtained by randomly selecting one type of feature block corresponding to the matrix element and rotating it. The operation of adding rotation is to make the watermark image more diverse. As we mentioned earlier, the embedded pattern on the display may be...

Embodiment 2

[0028] Embodiment 2: In the step S213, the "feature block corresponding to the matrix element" is generated according to the following steps:

[0029] S231. Select the preset shape of the feature block according to the matrix elements, the preset shape includes point, block, wire, figure 2 The default shape of the left feature block in , the default shape of the right feature block is silk, and the default shape of the middle four feature blocks can be considered as blocks;

[0030] S232. Generate a random shape according to the parameters corresponding to the preset shape;

[0031] S233. Coloring and rotating the generated random shape can obtain the feature block corresponding to the matrix element.

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PUM

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Abstract

The invention particularly relates to a screen watermark generation method based on stain simulation. The method comprises the following steps: S100, processing to-be-embedded information to obtain a character string; s200, generating a watermark picture according to a mapping relation between the character string and the feature block; wherein the feature pattern block is a picture which is preset or generated according to a certain rule, has a certain visual effect and is non-inductive to a user. By presetting the picture which has a visual effect and is non-inductive to the user as the feature graph block, on one hand, the visual effect is beneficial to later watermark extraction, and on the other hand, the user is non-inductive to the user, that is, the user generally does not think that the watermark is the watermark, so that the normal office of the user is not influenced after the technology is applied; the feature blocks can generally simulate pictures of dust, stains and screen dead pixels, and can also be other pictures which are non-inductive to users, so that the balance between the visual effect and the traceability success rate is achieved, and the application effect is very good.

Description

technical field [0001] The invention relates to the technical field of screen watermarking, in particular to a method for generating a screen watermark based on stain simulation, a storage device and an electronic device. Background technique [0002] With the advancement of science and technology and the popularization of smart phones, there are more and more cases of using smart phones for office work. While smart phones bring great convenience to our daily life, they also bring the risk of information leakage. For example, in order to understand the situation of rival companies, some malicious competitors secretly take pictures of the company's internal data stored in the mobile phones of the employees, or directly connect with the company's employees to steal the company's internal data by secretly taking pictures, screenshots, etc. Leaks caused by sneak shots and screenshots have caused great impact and immeasurable losses to enterprises. Facing such challenges of leaks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/005
Inventor 田辉吕子艳郭玉刚张志翔
Owner HEFEI HIGH DIMENSIONAL DATA TECH CO LTD