TABTI, Sonia; DELEDALLE, Charles-Alban; DENIS, Loïc; TUPIN, Florence

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TABTI, Sonia
TSI-TII radar

DELEDALLE, Charles-Alban
Institut de Mathématiques de Bordeaux [IMB]

DENIS, Loïc
Laboratoire Hubert Curien [LabHC]

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Document de travail - Pré-publication

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Adding invariance properties to a dictionary-based model is a convenient way to reach a high representation capacity while maintaining a compact structure. Compact dictionaries of patches are desirable because they ease semantic interpretation of their elements (atoms) and offer robust decompositions even under strong speckle fluctuations. This paper describes how patches of a dictionary can be matched to a speckled image by accounting for unknown shifts and affine radiometric changes. This procedure is used to build dictionaries of patches specific to SAR images. The dictionaries can then be used for denoising or classification purposes.< Leer menos

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Patches

dictionary

shift-invariant

contrast-invariant

SAR images

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BUILDING INVARIANCE PROPERTIES FOR DICTIONARIES OF SAR IMAGE PATCHES

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