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Millimeter-wave (MMW) holographic imaging has been demonstrated effective for security surveillance, especially for personnel surveillance. However, coherent effects, such as speckle, and the low signal-to-noise (SNR) may destroy image clarity and make it difficult for automatic target recognition. In order to improve the image quality of MMW image, an iterative reconstruction method based on total...
Nowadays, limited-angle problems are common in many Computed Tomography (CT) applications. In order to achieve a more satisfactory reconstruction in these problems, a compressed sensing (CS) based method Total Variation (TV) is developed. Usually, iterative methods are proposed to get a better stability as the projection views are less than theoretical requirements. Thus, these problems are achieved...
The CT limited-angle problem has been discussed for many years because of the strong demand in medical imaging applications. However as a severely ill-posed problem, it is hard to achieve accurate reconstruction if no additional prior information is given. Recently, an ART+TV reconstruction method was proposed. With the prior knowledge of image sparsity, the ART+TV gives high quality reconstructions...
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