Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 18 of 18 for “"Data Hiding"”.
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Image data hiding
Image data hiding represents a class of processes used to embed data into cover images. Robustness is one of the basic requirements for image data hiding. In the first part of this dissertation, 2D and 3D interleaving techniques associated with error-correction-code (ECC) are proposed to …
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Oblivious data hiding : a practical approach
… presents an in-depth study of oblivious data hiding with the emphasis on quantization based schemes. Three main issues are specifically addressed: 1. Theoretical and practical aspects of embedder-detector design. 2. Performance evaluation, and analysis of performance vs. complexity …
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Data hiding in multimedia - theory and applications
Multimedia data hiding or steganography is a means of communication using subliminal channels. The resource for the subliminal communication scheme is the distortion of the original content that can be tolerated. This thesis addresses two main issues of steganographic communication schemes: 1. How …
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Techniques for data hiding in audio files
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1995.
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Steganography and steganalysis: data hiding in Vorbis audio streams
The goal of the current work is to introduce ourselves in the world of steganography and steganalysis, centering our efforts in acoustic signals, a branch of steganography and steganalysis which has received much less attention than steganography and steganalysis for images. With this purpose in …
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Difference-expansion based reversible data hiding and its steganalysis
A novel reversible data embedding method was reported in a recent IEEE journal article. The method was based on difference expansion (DE) technique. It used redundancy in digital images to achieve a high embedding capacity, while keeping visual distortion of the stego-image low. In this thesis, …
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Comparison of data hiding using LSB and DCT for image
Steganography is the art and science of hiding information by embedding data into cover media. There are two main domains namely spatial and frequency domain. In this project, a comparison is made between hiding in spatial domain using LSB technique and hiding in frequency domain using DCT …
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Data hiding and detection in Office Open XML (OOXML) documents
… Many techniques have been proposed for hiding data in images, videos and audios, but there is not much research devoted to data hiding in the popular MS Office documents which have recently adopted Office Open XML (OOXML) format. In this research, we first focus on identifying several …
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Analysis of MHPDM algorithm for data hiding in JPEG images
… of interest in developing a secure algorithm for hiding information in images, or steganography. There has also been a lot of research in steganalysis of images, which deals with the detection of hidden information in supposedly natural images. The first section of this thesis reviews the …
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On the data hiding theory and multimedia content security applications
… is addressed subsequently. Some implications on hiding capacity and reliability are also studied. The last topic in SS modulation scheme is the sequence selection. The relationship between sequence bandwidth and synchronization requirement is detailed in the work. It is demonstrated that the …
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Graph-based decoders and divergence-rate estimators for data-hiding problems
… is, “Can we perform reliable decoding of hidden data in spite of the presence of unknown channel parameters?” or “How best can we detect presence of hidden data with unknown, and rather arbitrary, host and observation statistics?” While such questions are naturally relevant from a practical …
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Design and analysis of digital watermarking, information embedding, and data hiding systems
Digital watermarking, information embedding, and data hiding systems embed information, sometimes called a digital watermark, inside a host signal, which is typically an image, audio signal, or video signal. The host signal is not degraded unacceptably in the process, and one can recover the …
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Study of joint embedding and compression on JPEG compression scheme using multiple codebook data hiding
… a direct application of multiple codebook data hiding technique in the multimedia applications. It studies the practical implementation of a joint embedding and compression scheme. It presents a study of Type III data embedding technique using multiple codebook design on JPEG-85 compression …
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Achievable rates for queue-based timing stegocodes
This work studies stegocodes (data-hiding codes) for covert communication over timing channels. In a timing channel, the information resides in the packet interdeparture times as opposed to the packets themselves. The en- coding procedure should preserve the statistics of the packet interarrival …
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Conversion form structured programming to an object-oriented programming structure
… have become accustomed to the notlon that data and procedures are separate entities. Object-oriented programming languages replace data and procedures with the notions of activity, communication, and inheritance. Since these languages are relatively new, and not well understood, they are …
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A real-time audio transcoder with watermark images for content protection and quality of service monitoring
… module along with a watermarking-based data-hiding module that provides copyright protection as well as data integrity, authenticity assurance, and QoS monitoring. The audio was first adapted to multiple clients' needs on the server side, watermarked, and then sent to the connected …
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A wide spectrum type system for transformation theory
… of assembler as WSL lacks the ability to handle data types properly. The data structures in assembler are currently directly translated into C data types which involves many assumptional “hard coded” conversions. The absence of an adequate type system for WSL caused several flaws for the whole …