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Research on Information Hiding Algorithm Based on Visual Attention

Author: WangChengXi
Tutor: ZhouYanJun
School: Northeast Normal University
Course: Applied Computer Technology
Keywords: Information Hiding Visual attention Singular Value Decomposition
CLC: TP309
Type: Master's thesis
Year: 2010
Downloads: 79
Quote: 0
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Abstract


The rapid development of Internet technology provides a convenient application for people to pass on the network digital multimedia data , as well as new challenges to the issue of the protection of digital information . Information hiding technique is the need to protect digital information such as serial numbers , text , images , signs and other information embedded in a digital multimedia data masking techniques used to implement the secret covert communication of multimedia data . The specific application requirements of information hiding secret information embedded not only has imperceptibility , but also has strong robustness to resist the operation of various types of attacks . First , the basic concepts and principles of information hiding technology and different information hiding method , the existing digital image information hiding algorithm summarized and compared and a new information hiding algorithm based on visual attention . Interested in the algorithm based on the carrier image visual attention mechanism , selected carrier image significantly generate this area after the area outside the local carrier image , the local carrier image feature points detection and feature points extended to 8x8 size the feature region , and then all the features and the singular value decomposition . This paper presents a combination of singular value ( Singular Value ) embedding algorithm, to ensure that the secret information is embedded imperceptibility and embedding strength control . Makes the algorithm to achieve higher robustness due to the nature of the singular value decomposition algorithm processes on the computer simulation , focusing on for secret information imperceptibility , robustness and completeness of the three indicators , the secret information embedding, extraction and after the attacks secret information extraction tests . The experimental results show that the algorithm is effective and feasible , in the secret information embedding capacity at the same time , it can keep the image visual quality , compression, salt and pepper noise , Gaussian noise , cut, sharpening, and rotation attacks have demonstrated good robustness . In this paper , the image information hiding algorithm has a positive meaning for the research and application of human visual attention selection and digital image singular value decomposition .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > General issues > Security and confidentiality
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