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The integration of compressed sensing and parallel imaging (CS-PI) has shown an increased popularity in recent years to accelerate magnetic resonance (MR) imaging. Among them, calibration-free techniques have presented encouraging performances due to its capability in robustly handling the sensitivity information. Unfortunately, existing calibration-free methods have only explored joint-sparsity with...
High efficiency image reconstruction and inversion algorithm is one of the key technologies for interference synthetic aperture microwave radiometer. Due to the fact that the brightness temperature of the Earth has a local smoothness characteristic, it could be random sparse interferometry. Based on compressive sensing, this paper proposes a novel imaging approach of sparse interferometry to microwave...
A new framework of image encryption via voice feature is proposed. Voice data is preprocessed and the MFCC coefficients are firstly calculated on each sub-frame; an iterated vector quantization is then applied on the MFCC data to obtain the key to image encryption and decryption. Image encryption and decryption is done in the frequency domain with a simple XOR operation. Due to the uniqueness and...
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