Yong Ho Moon

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It is well known that a lot of computations are required for motion estimation in video encoding. Recently, the multilevel successive elimination algorithm (MSEA) has been proposed to reduce the computational complexity of block matching for motion estimation without degradation of estimation accuracy. In the MSEA, the block matching is hierarchically(More)
Keywords: Signal dependent noise model Noise parameter estimation Robust median estimator Denoising Mean of noise standard deviation a b s t r a c t In this paper, we present a noise parameter estimation method using a simplified signal-dependent noise model. The generic Poisson–Gaussian noise model is simplified to a Gaussian–Gaussian noise model. From the(More)
We show that both cross and bar states with high extinction ratios larger than 30 dB can be achieved at the same end of ultra short fused vertical directional coupler switches (FVCSs) with two sections by changing the refractive indices of cores and inner cladding layer less than 1%. The improvement of extinction ratios for various combinations of the(More)