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Sparse Multiscale Pacthes for Image Processing

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Academic year: 2021

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Fig. 1. Building a patch of multiscale coefficients, for a single color channel image.
Fig. 2. White indicates the location of patches of largest energy (1/8 of the patches is selected for each subband).
Fig. 3. Retrieval results for 5 images of the Nister database. For each row, left to right:
Fig. 4. Evaluation of the robustness to JPEG compression for one query image. Dis- Dis-played distances are from the query to the 6 relevant images - 3 compressed (A, B, C) and 3 geometrically transformed versions of the query - and to the first 2 non-rele
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