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Superior properties of the PRESB preconditioner for operators on two-by-two block form with square blocks.
Owe Axelsson
János Karátson
Published in:
Numerische Mathematik (2020)
Keyphrases
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fractal image coding
variable size
block size
desirable properties
image blocks
equal sized
dct coefficients
knowledge base
structural properties
feature vectors
block matching
formal language