Stein block thresholding for wavelet-based image deconvolution
نویسندگان
چکیده
منابع مشابه
Stein block thresholding for wavelet-based image deconvolution
Abstract: In this paper, we propose a fast image deconvolution algorithm that combines adaptive block thresholding and Vaguelet-Wavelet Decomposition. The approach consists in first denoising the observed image using a wavelet-domain Stein block thresholding, and then inverting the convolution operator in the Fourier domain. Our main theoretical result investigates the minimax rates over Besov ...
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In this paper, we investigate the minimax properties of Stein block thresholding in any dimension d with a particular emphasis on d = 2. Towards this goal, we consider a frame coefficient space over which minimaxity is proved. The choice of this space is inspired by the characterization provided in [5] of family of smoothness spaces on R d, a subclass of so-called decomposition spaces [28]. The...
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ژورنال
عنوان ژورنال: Electronic Journal of Statistics
سال: 2010
ISSN: 1935-7524
DOI: 10.1214/09-ejs550