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A super-resolution method based on the discrete cosine transform (DCT) is proposed for a signal with some frequency damage under a type 1 linear-phase (LP) FIR filter as a damage model. The proposed method can be carried out with real value operation and is applicable to any DCT in 4 kinds of DCTs. In addtion, two magnification schemes based on the proposed method to improve the conventional scheme...
We propose an image matching method using one-time key based phase scrambling. The phase scrambling is used for protection of the original information of templates visually in order to secure privacy. In the proposed method, a key is used to scramble an image once, but the key is not required in the image matching. An appropriately determined key allows image matching for visually protected images...
This paper proposes a frequency domain estimation algorithm for feedforward active noise control systems. To configure an M-tap adaptive filter, this technique uses M-channel maximally decimated alias-free DFT-frequency sampling filter (DFT-FSF) banks which equipped with 1-tap adaptive filter in each subband. The use of the proposed frequency domain estimation algorithm enables more than 10 times...
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