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The subpixel imaging technique for image super resolution can get a higher resolution image from two low resolution images which are observed from two linear array CCDs staggered half pixel both along the flight direction and perpendicular direction. In this paper, an adaptive weight interpolation method which considers the Euclidean distance information from two low resolution images for different...
The theorems of identical relation for interpolation and decimation in the linear canonical transform (LCT) domain have been proposed in this paper. For improving the efficiency of sampling rate conversion and saving the memory in digital system, we propose two identical relations in sampling rate conversion, one in interpolation and the other one in decimation. The result shows that the two identical...
The uniform sampling theorem and the reconstruction formulae associated with the fractional Fourier transform (FrFT) have been deduced in the literature, but the nonuniform sampling is yet to receive attention in the fractional Fourier domain. This paper focus on a special kind of non-uniform sampling process associated with the fractional Fourier transform. A nonuniform sampling model is first introduced...
The sampling theorem associated with the fractional Fourier transform can be looked as the convolution of the sinc kernel with infinite sequence of signal points and chirp signal modulations. But in most practical applications we only have finite number of samples, which makes a perfect reconstruction of the original signal impossible. To solve this problem, we obtain a new formula for perfect reconstruction...
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