نتایج جستجو برای: contourlet
تعداد نتایج: 566 فیلتر نتایج به سال:
2014
I. Kullayamma
V. Harika
K. Radhika
we propose a robust quantization-based image watermarking scheme, called the gradient direction watermarking (GDWM), and based on the uniform quantization of the direction of gradient vectors. In GDWM, the watermark bits are embedded by quantizing the angles of significant gradient vectors at multiple wavelet scales. The proposed scheme has the following advantages: 1) Increased invisibility of...
Journal:
:Energy Procedia
2011
Journal:
:Journal of Physics: Conference Series
2010
Journal:
:IEICE Transactions on Information and Systems
2010
Journal:
:The Open Automation and Control Systems Journal
2015
Journal:
:Journal of Electronic Imaging
2013
Journal:
:IEEE Access
2021
Journal:
:Information Technology Journal
2013
Journal:
:IET Image Processing
2020
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