منابع مشابه
Wavelet Frame Based Blind Image Inpainting
Image inpainting has been widely used in practice to repair damaged/missing pixels of given images. Most of the existing inpainting techniques require knowing beforehand where those damaged pixels are, either given as a priori or detected by some pre-processing. However, in certain applications, such information neither is available nor can be reliably pre-detected, e.g. removing random-valued ...
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This paper proposes a novel scheme for digital images inpainting based on discrete wavelet transform (DWT). Where the digital image is decomposed into four components and both structure and exemplar inpainting methods are individually applied on them to obtain the best arrangement with each component. Many cases if digital image have been used to verify the scheme. The aim of this research is t...
متن کاملDeep Blind Image Inpainting
Image inpainting is a challenging problem as it needs to fill the information of the corrupted regions. Most of the existing inpainting algorithms assume that the positions of the corrupted regions are known. Different from the existing methods that usually make some assumptions on the corrupted regions, we present an efficient blind image inpainting algorithm to directly restore a clear image ...
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X-ray computed tomography (CT) has been playing an important role in diagnostic of cancer and radiotherapy. However, high imaging dose added to healthy organs during CT scans is a serious clinical concern. Imaging dose in CT scans can be reduced by reducing the number of X-ray projections. In this paper, we consider 2D CT reconstructions using very small number of projections. Some regularizati...
متن کاملBlind Wavelet-Based Image Watermarking
In this paper, a wavelet-based scheme for digital image watermarking is presented. This proposed scheme is blind, which means that it requires neither the original image nor any side information in watermark recovery. It is based on inserting the watermark bits into the coarsest scale wavelet coefficients. Three-level wavelet decomposition and a watermark equal in size to the detail sub-bands i...
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ژورنال
عنوان ژورنال: Applied and Computational Harmonic Analysis
سال: 2012
ISSN: 1063-5203
DOI: 10.1016/j.acha.2011.06.001