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IPCV
2007
13 years 9 months ago
Quantization Based Blind Watermarking Algorithm Using DWT
- In this paper a Discrete Wavelet Transform based blind watermarking algorithm is proposed for embedding a grayscale watermark into a grayscale image. A new approach of choosing t...
Shikha Tripathi, Sai Krishnan Ramachandran, Vijay ...
CVPR
2008
IEEE
14 years 2 months ago
Rotation symmetry group detection via frequency analysis of frieze-expansions
We present a novel and effective algorithm for rotation symmetry group detection from real-world images. We propose a frieze-expansion method that transforms rotation symmetry gro...
Seungkyu Lee, Robert T. Collins, Yanxi Liu
ISBI
2004
IEEE
14 years 8 months ago
Speckle Reduction on Ultrasound Image by Variational Methods and Adaptive Lagrangian Multipliers
Ultrasound images are corrupted by a multiplicative noise, the speckle, which makes high level analysis difficult. Within each resolution cell a number of elementary scatterers re...
Arnaud Ogier, Pierre Hellier, Christian Barillot
JRTIP
2007
108views more  JRTIP 2007»
13 years 8 months ago
Real-time hardware acceleration of the trace transform
The trace transform is a novel algorithm that has been shown to be effective in a number of image recognition tasks. It is a generalisation of the Radon transform that has been wid...
Suhaib A. Fahmy, Christos-Savvas Bouganis, Peter Y...
IVC
2000
156views more  IVC 2000»
13 years 7 months ago
On the gray-scale inverse Hough transform
This paper proposes a gray-scale inverse Hough transform (GIHT) algorithm which is combined with a modified gray-scale Hough transform (GHT). Given only the data of the Hough tran...
Anastasios L. Kesidis, Nikos Papamarkos