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Method for embedding and detecting watermark based on vertex distribution feature digital three-dimensional model

A technology of 3D model and watermark embedding, applied in image data processing, image data processing, instruments, etc., can solve the problems of few types of attack resistance, inability to effectively protect the copyright of 3D models, and inability to effectively resist joint attacks.

Inactive Publication Date: 2013-04-17
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] There are few types of attacks against the current single 3D model digital watermarking technology, and it cannot resist all common attacks such as translation, rotation, scaling, vertex disorder, noise, simplification, shearing, quantization, smoothing and subdivision, and its robustness is not high enough to effectively resist joint attacks, and thus cannot effectively protect the copyright of 3D models. The present invention provides a new watermark embedding and detection method based on vertex distribution characteristics of digital 3D models. This method can not only resist all common 3D models Attacks such as translation, rotation, scaling, vertex disorder, noise, simplification, shearing, quantization, smoothing and subdivision, and have high robustness, and also have good resistance to joint attacks, so as to achieve effective protection Purpose of 3D Model Copyright

Method used

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  • Method for embedding and detecting watermark based on vertex distribution feature digital three-dimensional model
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  • Method for embedding and detecting watermark based on vertex distribution feature digital three-dimensional model

Examples

Experimental program
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Effect test

specific example 1

[0168] Specific example 1: In the bunny model (see image 3 ) application on

[0169] 1. Watermark embedding

[0170] The embedded digital watermark is:

[0171] 1111110100101011101010100110000100100000000101100000000010001000

[0172] 2. Watermark detection

[0173] Geometry attack, vertex disorder, noise, simplification, clipping, quantization, smoothing, subdivision and joint attack are carried out on the bunny model after embedding the watermark. The attack is carried out using the 3-D Mesh Watermarking Benchmark software developed by LIRIS laboratory. Watermark detection is performed on the bunny model after the attack to verify the robustness of this technology. The experimental results are shown in Table 1. It can be seen from the experimental results that the watermark extracted from the model to be detected and the original watermark have high correlation values ​​after various attacks by applying the present invention, indicating that the present invention can b...

specific example 2

[0176] Specific example 2: In the camel model (see Figure 4 ) application on

[0177] 1. Watermark embedding

[0178] The embedded digital watermark is:

[0179] 0001111111000010000011000000100000000110101010110000111110010010

[0180] 2. Watermark detection

[0181] Geometry attack, vertex disorder, noise, simplification, clipping, quantization, smoothing, subdivision and joint attack are carried out on the camel model after embedding the watermark. The attack is carried out using the 3-D Mesh Watermarking Benchmark software developed by LIRIS laboratory. Watermark detection is performed on the attacked camel model to verify the robustness of this technology. The experimental results are shown in Table 2.

[0182] Table 2 camel model experimental results

[0183]

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Abstract

The invention provides a method for embedding and detecting a watermark based on a vertex distribution feature digital three-dimensional model. The watermark embedding method comprises the following steps of: 11, preprocessing a three-dimensional model; 12, partitioning the three-dimensional model; 13, embedding a watermark into the three-dimensional model; and 14, performing inverse processing of the processing in the step 11 on the three-dimensional model. According to the method, a digital watermark and the vertex distribution feature of the three-dimensional model are combined tightly, and the vertex distribution feature is strengthened, and the digital watermark is stable sufficiently, can resist all common attacks of the three-dimensional model such as translation, rotation, zooming, vertex disorder, noise, simplification, shearing, quantification, smoothening and fining, and has high resistance to joint attacks, so that the aim of effectively protecting the copyright of the three-dimensional model is fulfilled.

Description

technical field [0001] The invention relates to the technical field of multimedia information security, in particular to a watermark embedding and detection method based on a digital three-dimensional model of vertex distribution characteristics. Background technique [0002] At present, the country pays more and more attention to the protection of intellectual property rights. Intellectual property rights are not only possessed by tangible items, but digital media such as graphics, images, texts, audio and video created by computers and other digital devices also have intellectual property rights. Property rights should also be protected. The concept of modern digital watermarking technology began in 1993, and was first used for copyright protection of images. Subsequently, more and more researchers began to pay attention to this technology. At present, digital watermarking technology is a frontier research direction in the field of information security. However, most of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
Inventor 王新宇詹永照
Owner JIANGSU UNIV