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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 電機工程學系 > 期刊論文 >  IMAGE RECOVERY IN COMPUTER-TOMOGRAPHY FROM PARTIAL FAN-BEAM DATA BY CONVEX PROJECTIONS


    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71056


    Title: IMAGE RECOVERY IN COMPUTER-TOMOGRAPHY FROM PARTIAL FAN-BEAM DATA BY CONVEX PROJECTIONS
    Authors: PENG H;STARK H
    教師: 彭惠
    Date: 1992
    Publisher: Institute of Electrical and Electronics Engineers
    Relation: IEEE TRANSACTIONS ON MEDICAL IMAGING, Institute of Electrical and Electronics Engineers, Volume 11, Issue 4, DEC 1992, Pages 470-478
    Keywords: RECONSTRUCTION
    ITERATIVE CONVOLUTION
    ALGORITHM
    INTERFEROMETRY
    EXTRAPOLATION
    REDUCTION
    Abstract: We address the problem of recovering a CT image from partial fan-beam data and prior knowledge. The method used is that of convex projections also known as the method of projections onto convex sets (POCS). We consider several incomplete-data geometries including those associated with limited source travel and beam-blocking internal opacities. To enable the recovery we use several prior-knowledge constraints including one associated with the directivity of the image vector. The overall recovery algorithm can be practically implemented by exploiting the Toeplitz structure of key operators.
    Relation Link: http://www.ieee.org/
    URI: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/71056
    Appears in Collections:[電機工程學系] 期刊論文

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