Invention Application
US20080226032A1 ADAPTIVE GRADIENT WEIGHTING TECHNIQUE FOR DETECTOR BAD CELL CORRECTION 有权
用于检测器BAD细胞校正的自适应梯度称重技术

  • Patent Title: ADAPTIVE GRADIENT WEIGHTING TECHNIQUE FOR DETECTOR BAD CELL CORRECTION
  • Patent Title (中): 用于检测器BAD细胞校正的自适应梯度称重技术
  • Application No.: US11687410
    Application Date: 2007-03-16
  • Publication No.: US20080226032A1
    Publication Date: 2008-09-18
  • Inventor: Baojun LiJiang Hsieh
  • Applicant: Baojun LiJiang Hsieh
  • Main IPC: H01J35/00
  • IPC: H01J35/00
ADAPTIVE GRADIENT WEIGHTING TECHNIQUE FOR DETECTOR BAD CELL CORRECTION
Abstract:
An imaging system includes a two-dimensional detector having a plurality of cells wherein each cell is configured to detect energy or signal passing through an object. The imaging system includes a computer programmed to acquire imaging data for the plurality of cells, identify a cell to be corrected, based on the imaging data, interpolate Ix and Iy for the identified cell based on neighbor cells, and calculate local gradients gx and gy between the identified cell and its neighbor cells based on the interpolation. The computer is further programmed to calculate weighting factors wx and wy based on the local gradients, calculate a corrected final value I(0,0) for the identified cell, and correct the identified cell with the corrected final value.
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