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TIP
1998
114views more  TIP 1998»
13 years 4 months ago
An optimal polygonal boundary encoding scheme in the rate distortion sense
—In this paper, we present fast and efficient methods for the lossy encoding of object boundaries that are given as eight-connect chain codes. We approximate the boundary by a p...
Guido M. Schuster, Aggelos K. Katsaggelos
TIP
1998
125views more  TIP 1998»
13 years 4 months ago
Additive vector decoding of transform coded images
—In a standard transform coding scheme of images or video, the decoder can be implemented by a table-lookup technique without the explicit use of an inverse transformation. In th...
Siu-Wai Wu, Allen Gersho
TIP
1998
83views more  TIP 1998»
13 years 4 months ago
Nonexpansive pyramid for image coding using a nonlinear filterbank
Ricardo L. de Queiroz, Dinei A. F. Florêncio...
TIP
1998
103views more  TIP 1998»
13 years 4 months ago
Orientation diffusions
Abstract—Diffusions are useful for image processing and computer vision because they provide a convenient way of smoothing noisy data, analyzing images at multiple scales, and en...
Pietro Perona
TIP
1998
90views more  TIP 1998»
13 years 4 months ago
Processing JPEG-compressed images and documents
—As the Joint Photographic Experts Group (JPEG) has become an international standard for image compression, we present techniques that allow the processing of an image in the “...
Ricardo L. de Queiroz
TIP
1998
102views more  TIP 1998»
13 years 4 months ago
Directional filtering in edge detection
— Two-dimensional (2-D) edge detection can be performed by applying a suitably selected optimal edge half-filter in n directions. Computationally, such a two-dimensional n-direc...
Andrew P. Paplinski
TIP
1998
124views more  TIP 1998»
13 years 4 months ago
Texture synthesis via a noncausal nonparametric multiscale Markov random field
Abstract— Our noncausal, nonparametric, multiscale, Markov random field (MRF) model is capable of synthesising and capturing the characteristics of a wide variety of textures, f...
Rupert Paget, I. Dennis Longstaff
TIP
1998
142views more  TIP 1998»
13 years 4 months ago
Inversion of large-support ill-posed linear operators using a piecewise Gaussian MRF
Abstract—We propose a method for the reconstruction of signals and images observed partially through a linear operator with a large support (e.g., a Fourier transform on a sparse...
Mila Nikolova, Jérôme Idier, Ali Moha...