专利名称：Systems and methods for detecting camera
defect caused by exposure to radiation
发明人：Hassan Mostafavi申请号：US14874070申请日：20151002公开号：US09773318B2公开日：20170926
专利附图：
摘要：A method of detecting camera defect includes: obtaining an image by aprocessing unit, the processing unit having a surface fit module, a subtraction module,and a peak quantification module; determining a first autocorrelation map for a first sub-
region in the image; determining, using the surface fit module, a first surface fit for firstscene content in the first sub-region; subtracting, using the subtraction module, the firstsurface fit from the first autocorrelation map for the first sub-region in the image toobtain a first residual map; and quantifying, using the peak quantification module, a firstnoise in the first residual map.
申请人：Varian Medical Systems, Inc.
地址：Palo Alto CA US
国籍：US
代理机构：Vista IP Law Group, LLP
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