In MRI subsampling is used to reduce data scanning time which does not satisfy the Nyquist sampling frequency and result in image aliasing .

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Study on the Space Pattern and Subsampling Technique of Corn Leaf Mites

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The residential areas cultural and educational areas city parks commercial areas urban roads industrial zones development zones in Hohhot were taken as the research objects the soil samples were randomly collected by triple subsampling technique in each functional zone .

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Analysis of transformation methods in image watermarking using subsampling

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Based on the cross-spectra ESPRIT algorithm and remainder theorem the modulation rate and initial frequency of the subsampling ultra-wideband LFM signal are estimated unambiguously and precisely even in low SNR .

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Sparse representation in traditional image reconstruction does not take into account the structure in the data space . Especially when the sparse representation dictionary is formed merely using the subsampling data image cannot be sparse represented effectively .

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The Robust Watermarking Scheme Based on Subsampling

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Experiments show that the proposed algorithm can achieve a better reconstruction performance than the traditional methods . The relationship between the quality of the reconstructed MR images and different type of sampling matrix and different subsampling rate is discussed .

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In some applications sampling with Nyquist frequency may be hard to implement due to hardware limitation . Based on subsampling a method which estimates the modulation rate and initial frequency of the ultra-wideband LFM signal is presented in this paper .

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By using the cross subsampling rhombus filer two dimensional DPCM motion check inter frame and intra frame insert the rate of digital color television signal will be compressed from 216Mb / s to 34Mb / s.

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In this paper key algorithms of electronic reconnaissance signal processing and the subsampling wideband digital receiver of electronic reconnaissance are researched combining with the hardware characteristic of the wideband digital receiver .

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In the paper to meet the dynamic performance requirements of digital receiver a subsampling receiv u02c9 er architecture is introduced .

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Application of ICA and Subsampling in Color Image Watermark Based on DWT

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The subsampling process is splitted into two stages .

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Based on the remainder theorem and direct dechirp operation an algorithm for estimation of chirp rate and initial frequency of the subsampling wideband LFM signal unambiguously is presented .

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Since the subsampling wideband LFM signal and its two difference delay visions conjugation product are all single tones the chirp rate is estimated unambiguously by FFT and spectrum peak search detection ( PSD ) and remainder theorem .

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The traditional subsampling based information hiding algorithm can not resist the permutation attack . In this paper an improved algorithm is proposed to resist the permutation attack .

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Then the author mentioned that the incomplete subsampling is one of reliability preprocessing methods it includes instantaneous failure data induction and Johnson method etc.

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A Method for Estimation Parameters of UWB LFM Signal with Subsampling

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