Reversible 3D polygonal grid data hiding algorithm based on segment displacement

Abstract

The invention provides a reversible 3D polygonal grid data hiding algorithm based on segment displacement. The algorithm mainly includes an information hiding part and an information extracting part, wherein the core part is information processing conducted through a 3D grid, normal control coordinates and normal label information are acquired and segmented, information hiding and information extraction are conducted, and finally a processed 3D grid model is acquired through model reconstitution. According to the hiding algorithm, a segmenting hiding strategy is adopted in the model, so that a hiding error is controlled within a small and controllable range, a user is capable of hiding infinite information on the 3D grid model, the high signal to noise ratio is guaranteed, and the problem that the information hiding amount and the signal to noise ratio are contradictory directly is really solved. As a new 3D model information hiding mode, the reversible 3D polygonal grid data hiding algorithm has high application value in the fields such as grid communication, digital families and information security.

Description

technical field [0001] The invention is applicable to a hiding method based on 3D polygon grid data, belongs to the fields of computer graphics and information transmission, and is especially suitable for the field of confidential information communication. Background technique [0002] With the development and rapid popularization of modern communication technology, especially with the wide application of the computer Internet, which was born from the combination of communication and computer, the sharing and dissemination of information has become increasingly frequent and in-depth. While it brings various conveniences to people, it also brings a series of information security problems, such as information theft. Copyright protection of multimedia information, information tampering, etc. However, the traditional means of information security - cryptography cannot really solve such problems. For this reason, people put forward information hiding technology, which has been...

AI Technical Summary

Problems solved by technology

At the same time, most of the existing algorithms have high requirements on the geometric shape of the carrier graphics, which further weakens its noise resistance.

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