Seung-Jin Baek

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A numerical study was made of flow behind a circular cylinder in a uniform flow, where the cylinder was rotationally oscillated in time. The temporal behavior of vortex formation was scrutinized over broad ranges of the two externally specified parameters, i.e., the dimensionless rotary oscillating frequency (0.110<S f<0.220) and the maximum angular(More)
Using IP-based Virtual Private Network (IP-VPN) technology, a company can establish its virtual private network over public networks. Recently, IP-VPN emerges as one of main technologies for increasing business competitiveness with reasonable costs. The standards for IP-VPN are currently being developed by Internet Engineering Task Forces (IETF) and others.(More)
In this paper, a novel hybrid method for whole-frame error concealment is proposed. The proposed method effectively combines results of various EC methods using the Kalman filter algorithm. Experimental results demonstrate that the proposed method improves PSNR performance with acceptable additional bits.
This paper presents a frame-adaptive deblocking filter that can improve the coding efficiency of the H.264/AVC standard. In the proposed deblocking scheme, the optimal filter coefficients are found by minimizing the mean square error between the block edge in each decoded frame and that in the corresponding original frame. Experimental results show that the(More)