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• W2094811265 abstract "Sparse coding is widely known as a methodology where an input signal can be sparsely represented from a suitable dictionary. It was successfully applied on a wide range of applications like the textual image Super-Resolution. Nevertheless, its complexity limits enormously its application. Looking for a reduced computational complexity, a coupled dictionary learning approach is proposed to generate dual dictionaries representing coupled feature spaces. Under this approach, we optimize the training of a first dictionary for the high-resolution image space and then a second dictionary is simply deduced from the latter for the low-resolution image space. In contrast with the classical dictionary learning approaches, the proposed approach allows a noticeable speedup and a major simplification of the coupled dictionary learning phase both in terms of algorithm architecture and computational complexity. Furthermore, the resolution enhancement results achieved by applying the proposed approach on poorly resolved textual images lead to image quality improvements." @default.
• W2094811265 created "2016-06-24" @default.
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• W2094811265 date "2014-08-01" @default.
• W2094811265 modified "2023-10-03" @default.
• W2094811265 title "Sparse Coding with a Coupled Dictionary Learning Approach for Textual Image Super-resolution" @default.
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• W2094811265 doi "https://doi.org/10.1109/icpr.2014.763" @default.
• W2094811265 hasPublicationYear "2014" @default.
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