Resultats globals: 3 registres trobats en 0.02 segons.
Articles, 3 registres trobats
Articles 3 registres trobats  
1.
17 p, 839.0 KB ROI Based Quality Access Control of Compressed Color Image using DWT via Lifting / Phadikar, Amit (MCKV Institute of Engineering (Índia). Department of Information Technology) ; Maity, Santi P. (Bengal Engineering and Science University. Department of Information Technology)
Region-of-Interest (ROI) in an image or video signal contains important information and may be used for access control at various qualities using multiresolution analysis (MRA). This paper proposes a novel quality access control method of compressed color image by modulating the coefficients of ROI at various levels. [...]
2009 - 10.5565/rev/elcvia.303
ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 8 n. 2 (2009) p. 51-67  
2.
10 p, 421.4 KB Redundant Wavelet Watermarking using Spread Spectrum Modulation / Mankar, V. H. (Jadavpur University (Kolkata Índia). Department of Electronics and Telecommunication Engineering) ; Das, T. S. (Jadavpur University (Kolkata Índia). Department of Electronics and Telecommunication Engineering) ; Sarkar, S. (Jadavpur University (Kolkata Índia). Department of Electronics and Telecommunication Engineering)
Spread Spectrum modulation has become a preferred paradigm in many watermarking applications. This paper analyzes the performance of such a blind watermarking scheme under discrete wavelet frame rather than a traditional orthonormal wavelet expansion. [...]
2008 - 10.5565/rev/elcvia.267
ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 7 n. 2 (2008) p. 1-10  
3.
12 p, 445.7 KB A Novel Watermarking Technique for Tampering Detection in Digital Images / Yang, Chen-Kuei (Ming Chuan University. Department of Computer Science and Information Engineering) ; Huang, Chang-Sheng (Ming Chuan University. Department of Computer and Information Management)
A novel fragile watermarking technique is proposed for hiding logo information into an image by tuning block pixels based on a bitmap parity checking approach. A secure key and a random number generator are used to hide the logo information in a secret, undetectable, and unambiguous way. [...]
2004 - 10.5565/rev/elcvia.65
ELCVIA : Electronic Letters on Computer Vision and Image Analysis, V. 3 n. 1 (2004) p. 1-12  

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