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Image denoising using group sparsity residual and external nonlocal self-similarity prior.
Zhiyuan Zha
Xinggan Zhang
Qiong Wang
Yechao Bai
Lan Tang
Published in:
ICIP (2017)
Keyphrases
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group sparsity
structured sparsity
sparse coding
natural images
dictionary learning
low rank
image denoising
prior knowledge
sparse representation
discriminative power
image patches
object recognition
nearest neighbor
machine learning
image restoration
generative model
learning models