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A direct digital frequency synthesizer based on two segment fourth-order parabolic approximation.
Xiaojin Li
Linhui Lai
Ao Lei
Zongsheng Lai
Published in:
IEEE Trans. Consumer Electron. (2009)
Keyphrases
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fourth order
noise removal
high order
partial differential equations
image interpolation
nonlinear diffusion
anisotropic diffusion
edge preservation
estimation error
numerical algorithms
multiscale
multiresolution
denoising
object recognition
image denoising
locally adaptive