Sparse microwave imaging: Principles and applications

BC Zhang, W Hong, YR Wu - Science China Information Sciences, 2012 - Springer
This paper provides principles and applications of the sparse microwave imaging theory and
technology. Synthetic aperture radar (SAR) is an important method of modern remote …

Directionlets: anisotropic multidirectional representation with separable filtering

V Velisavljevic, B Beferull-Lozano… - … on Image Processing, 2006 - ieeexplore.ieee.org
In spite of the success of the standard wavelet transform (WT) in image processing in recent
years, the efficiency of its representation is limited by the spatial isotropy of its basis …

Adaptive directional lifting-based wavelet transform for image coding

W Ding, F Wu, X Wu, S Li, H Li - IEEE Transactions on Image …, 2007 - ieeexplore.ieee.org
We present a novel 2-D wavelet transform scheme of adaptive directional lifting (ADL) in
image coding. Instead of alternately applying horizontal and vertical lifting, as in present …

Directional discrete cosine transforms—A new framework for image coding

B Zeng, J Fu - IEEE transactions on circuits and systems for …, 2008 - ieeexplore.ieee.org
Nearly all block-based transform schemes for image and video coding developed so far
choose the 2-D discrete cosine transform (DCT) of a square block shape. With almost no …

Contourlet-based image watermarking using optimum detector in a noisy environment

MA Akhaee, SME Sahraeian… - IEEE Transactions on …, 2009 - ieeexplore.ieee.org
In this paper, an improved multiplicative image watermarking system is presented. Since
human visual system is less sensitive to the image edges, watermarking is applied in the …

Isotropic polyharmonic B-splines: Scaling functions and wavelets

D Van De Ville, T Blu, M Unser - IEEE Transactions on Image …, 2005 - ieeexplore.ieee.org
In this paper, we use polyharmonic B-splines to build multidimensional wavelet bases.
These functions are nonseparable, multidimensional basis functions that are localized …

[HTML][HTML] An edge detection approach based on directional wavelet transform

Z Zhang, S Ma, H Liu, Y Gong - Computers & Mathematics with Applications, 2009 - Elsevier
The standard 2D wavelet transform (WT) has been an effective tool in image processing. In
recent years, many new transforms have been proposed successively, such as curvelets …

Image and video denoising using adaptive dual-tree discrete wavelet packets

J Yang, Y Wang, W Xu, Q Dai - IEEE transactions on circuits …, 2009 - ieeexplore.ieee.org
We investigate image and video denoising using adaptive dual-tree discrete wavelet
packets (ADDWP), which is extended from the dual-tree discrete wavelet transform (DDWT) …

The design of wavelets for image enhancement and target detection

S DelMarco, S Agaian - Mobile Multimedia/Image Processing …, 2009 - spiedigitallibrary.org
Detecting dim targets in infrared imagery remains a challenging task. Several techniques
exist for detecting bright, high contrast targets such as CFAR detectors, edge detection, and …

Discrete directional wavelet bases for image compression

PL Dragotti, V Velisavljevic, M Vetterli… - Visual …, 2003 - spiedigitallibrary.org
The application of the wavelet transform in image processing is most frequently based on a
separable construction. Lines and columns in an image are treated independently and the …