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 …

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 …

[图书][B] Discrete cosine transform

H Ochoa-Dominguez, KR Rao - 2019 - taylorfrancis.com
Many new DCT-like transforms have been proposed since the first edition of this book. For
example, the integer DCT that yields integer transform coefficients, the directional DCT to …

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 …

Oriented wavelet transform for image compression and denoising

V Chappelier, C Guillemot - IEEE Transactions on image …, 2006 - ieeexplore.ieee.org
In this paper, we introduce a new transform for image processing, based on wavelets and
the lifting paradigm. The lifting steps of a unidimensional wavelet are applied along a local …

Methods and apparatus for in-loop de-artifacting filtering based on multi-lattice sparsity-based filtering

OD Escoda, P Yin - 2008 - Google Patents
WO2008153856A1 - Methods and apparatus for in-loop de-artifacting filtering based on
multi-lattice sparsity-based filtering - Google Patents WO2008153856A1 - Methods and …

[PDF][PDF] Проблема подавления шума на изображениях и видео и различные подходы к ее решению

Д Калинкина, Д Ватолин - Компьютерная графика и …, 2005 - masters.donntu.ru
cgm. computergraphics. ru/content/view/74 2/30 описания изображенных объектов. Цели
распознавания могут быть разными: как выделение отдельных элементов на …

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 …

Approximation power of directionlets

V Velisavljevic, B Beferull-Lozano… - … on Image Processing …, 2005 - ieeexplore.ieee.org
In spite of the success of the standard wavelet transform (WT) in image processing, the
efficiency of its representation is limited by the spatial isotropy of its basis functions built in …