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TIP
1998
103views more  TIP 1998»
14 years 9 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
125views more  TIP 1998»
14 years 9 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
89
Voted
TIP
1998
114views more  TIP 1998»
14 years 9 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
96
Voted
TIP
1998
129views more  TIP 1998»
14 years 9 months ago
Minimax partial distortion competitive learning for optimal codebook design
— The design of the optimal codebook for a given codebook size and input source is a challenging puzzle that remains to be solved. The key problem in optimal codebook design is h...
Ce Zhu, Lai-Man Po
TIP
2002
102views more  TIP 2002»
14 years 9 months ago
Hierarchical watermarking for secure image authentication with localization
Several fragile watermarking schemes presented in the literature are either vulnerable to vector quantization (VQ) counterfeiting attacks or sacrifice localization accuracy to impr...
Mehmet Utku Celik, Gaurav Sharma, Eli Saber, A. Mu...