Results 61 to 70 of about 2,172,252 (181)
A transparent semi-fragile watermarking scheme for 3D models
, 2010 碩士我們的研究主要是在無遠弗屆的網路上利用semi-fragile watermarking來確保3D models的完整性。浮水印是以3D model本身的資訊及種子數（如使用者的合法註冊號碼）產生的亂數所組成，不需使用額外的資訊。驗證浮水印時只要以原種子數利用簡單的數學運算便可以評斷models的完整性。我們所提的方法可以抵擋放大、縮小、平移等常見的3D models處理，也可以抵擋點順序重新排序等攻擊。嵌入方法對3D models外型的影響非常小，因此本方法適用於精密機具或醫學的3D models。
陳瑀穎; Chen, Yu-ying
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A semi-fragile lossless digital watermarking scheme based on integer wavelet transform
, 2004 In this paper, a new semi-fragile lossless digital watermarking scheme based on integer wavelet transform (IWT) is presented. Data are embedded into some IWT coefficients.
Ni, Zhicheng, Shi, Yun Q., Zou, Dekun
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Regions Based Semi-fragile Watermarking Scheme
, 2020 In this paper, we propose a new semi-fragile watermarking scheme in the frequency domain for surveillance videos authentication. Our system starts operating by generating a binary watermark based on a novel watermark construction process. This latter combines Speeded Up Robust Features (SURF) and Maximally Stable Extremal Regions (MSER) detectors to ...
Hammami, Amal +3 more
openaire +2 more sources
Dual Domain Semi-Fragile Watermarking for Image Authentication,” M.A.Sc. thesis
, 2003 Techniques to establish the authenticity and integrity of digital images are becom-ing increasingly essential for secure transacting. Ideally, the authentication algorithm should distinguish incidental integrity maintaining distortions such as lossy ...
Yang Zhao
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, 2008 Authentication of multimedia contents has gained much attention in recent times. In this paper, we propose a secure semi-fragile watermarking, with a choice of two watermarks to be embedded. This technique operates in integer wavelet domain and makes use
Zahid Munir +3 more
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, 2009 With the tremendous growth and use of digital cameras and video devices, the need to verify the collected digital content for law enforcement applications such as crime scene investigations and traffic violations, becomes paramount if they are to be used
Ho, ATS, Zhao, X
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Blind video watermarking scheme for medical video authentication. [PDF]
Heliyon, 2023 Khafaga DS +3 more
europepmc +1 more source
Histogram preserving QIM-based watermarking [PDF]
, 2012 Quantisation-based watermarking schemes are known to be strongly robust to noise and widely applied for image authentication. However, such schemes tend to create specific patterns in the histogram of the watermarked image, thus opening security gap for ...
Li, Yue, Li, Chang-Tsun
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A Fragile Image Watermarking Scheme in DWT Domain Using Chaotic Sequences and Error-Correcting Codes. [PDF]
Entropy (Basel), 2023 Ramos AM +3 more
europepmc +1 more source
Fragile watermarking techniques for image authentication
, 2009 Techniques to establish the authenticity and integrity of digital images are becoming increasly essential over the Intermet. The authentication algorithm should distinguish malicious manipulations from the original watermarked image. Fragile watermarking
De Santis, Michele
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