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 20 of 26 for “"Watermarks"”.
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Bypassing LLM watermarks with color-aware substitutions
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Framework for Automatic Identification of Paper Watermarks with Chain Codes
… archiving, and identification of paper watermarks found in historical documents and manuscripts. The early manufacturers of paper have introduced the embedding of identifying marks and patterns as a sign of a distinct origin and perhaps as a signature of quality. Thousands of watermarks …
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Contextual biometric watermarking of fingerprint images
… using face and demographic text data as multiple watermarks for protecting the evidentiary integrity of fingerprint image. The proposed techniques embed the watermarks into selected regions of fingerprint image in MDCT and DWT domains. A general image watermarking algorithm is developed to …
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Design, analysis, and implementation of effective network flow watermarking schemes
… analysis, and implementation of network flow watermarks. Our research is motivated by two main issues with existing flow watermarks: i) previous flow watermarks are not efficient, meaning that they need very long network flows in order to successfully detect watermarked flows, and, ii) …
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Technical analysis and documentation of seventeenth-century works printed in Malta
… previously undocumented characteristics such as watermarks and all the decorative elements are also included for comparative study. The watermarks have been given particular attention via their visual recording and an attempt made to trace their origin. Though not an exact science with regards to …
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Paper-Based Watermark Extraction with Image Processing
… to capturing all details on paper, including watermarks, and laid and chain lines patterns. Two approaches are presented: the first takes a bottom-up approach and deploys image processing operations to enhance, filter, and extract the watermark, and convert it into a graphical representation. …
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Bindweed And Fire
… sections. The first two sections, Drought and Watermarks, contain short metrical lyrics built around images of fire and water. Sabbath, the third section is a long free-verse poetic sequence in three voices. In ekphrastic poems rich with private symbolism, the first voice attempts to refract …
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Deep learning for face detection using matlab
… as well as the images of human faces that have watermarks. The test results on face tracking when the image has watermarks. Under this condition, it looks like the CNN and deep learning could not identify the image correctly and wrong result is showing for the second image. This indicates that …
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Modeling and frequency tracking of marine mammal whistle calls
… whistles embedded with retrievable watermarks. Structured total least squares is used with linear prediction analysis to track the time-varying fundamental frequency and harmonic amplitude contours throughout a whistle call. Simulation and experimental results demonstrate the …
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Modeling and frequency tracking of marine mammal whistle calls
… whistles embedded with retrievable watermarks. Structured total least squares is used with linear prediction analysis to track the time-varying fundamental frequency and harmonic amplitude contours throughout a whistle call. Simulation and experimental results demonstrate the …
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Digital audio watermarking for broadcast monitoring and content identification
… to be extremely effective in recovering embedded watermarks in music signals using a semi-blind decoding process. The final digital audio watermarking algorithm proposed facilitates the development of other applications in the domain of broadcast monitoring for the purposes of equitable royalty …
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Design and analysis of Discrete Cosine Transform-based watermarking algorithms for digital images. Development and evaluation of blind Discrete Cosine Transform-based watermarking algorithms for copyright protection of digital images using handwritten signatures and mobile phone numbers.
… YCrCb images. Mobile phone numbers are used as watermarks for images captured by mobile phone cameras. The information is embedded multiple-times and a shuffling scheme is applied to ensure that no spatial correlation exists between the original host image and the multiple watermark copies. …
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Design and analysis of Discrete Cosine Transform-based watermarking algorithms for digital images. Development and evaluation of blind Discrete Cosine Transform-based watermarking algorithms for copyright protection of digital images using handwritten signatures and mobile phone numbers
… YCrCb images. Mobile phone numbers are used as watermarks for images captured by mobile phone cameras. The information is embedded multiple-times and a shuffling scheme is applied to ensure that no spatial correlation exists between the original host image and the multiple watermark copies. …
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Low-complexity methods for image and video watermarking
… Our methods use these characteristics to create watermarks that are robust to geometric distortions and lossy compression. The proposed schemes are simple to implement and outperform comparable methods when tested against geometric distortions.
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Building Reliable AI under Distribution Shifts
… of AI-generated content, revealing how image watermarks, designed for provenance tracking, often fail when subjected to real-world distortions and adversarial attacks. To address this, we introduce a comprehensive benchmark for evaluating watermark robustness, providing a framework for …
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Beyond the Tregian Theory: Physical Analysis and Content of the Fitzwilliam Virginal Book; Egerton Ms 3665; Drexel Ms 4302; and Christ Church Mus. 510-14, Layer 2
… of other dated manuscripts with similar watermarks. Ink records confirmed some significant organisational/scribal changes. Ruling measurements revealed the original generous page set-ups, and confirmed that a minority of now-separated copies once belonged together. Scribal analysis …
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Watermark redundancy using sudoku
… and existing metrics merely disregard noisy watermarks for proof of ownership. In this thesis, a new watermark redundancy using Sudoku watermarking is proposed. In Sudoku watermarking, an 81-digit Sudoku “serial” numbers are embedded into a cover image. These numbers are represented in the …
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Digital Watermarking for Depth-Image-Based Rendering 3D Images and Its Application to Quality Evaluation
… the degradation of corresponding extracted watermarks. The simulation results demonstrate that our scheme has good performance of quality evaluation for DIBR 3D images under the attacks.
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ROBUST WATERMARKING TECHNIQUES FOR SCALABLE CODED IMAGE AND VIDEO
… affect the content protection data, such as, watermarks and are considered as a potential watermark attack. In this thesis, research on robust watermarking techniques for scalable coded image and video, are proposed and the improvements in robustness against various content adaptation attacks, …
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