%0 Journal Article
%T Analysis and Correction for Nonuniformity of the Two Side Proximity of X-ray Image Intensifier Radiography<br>双近贴式X射线像增强器成像不均匀性的分析与校正
%A LI Wei
%A ZHAO Bao-sheng
%A ZHAO Fei-fei|CAO Xi-bin
%A <br>李伟
%A 赵宝升
%A 赵菲菲
%A 曹希斌
%J 光子学报
%D 2009
%I 
%X By theoretical analysis of the cause for the two side proximity of X-ray image intensifier response non-uniformity,a mathematics model of each pixel channel was set up and an improved multi-point correction algorithm was presented.The nonlinear response data was transformed to linear response by the proposed algorithm and the two-point algorithm based on least-mean-square method was used to correct the image data.The standard deviations for images and the gray distributed curve were given before and after the correction.The non-uniformity correction capability of the presented solution was validated by experimental results.
%K Radiography
%K X-ray image intensifier
%K Image nonuniformity
%K Nonuniformity correction<br>射线成像
%K X射线像增强器
%K 图像不均匀性
%K 不一致性校正
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=9F6139E34DAA109F9C104697BF49FC39&aid=908582C35123620A4EF7C49BA7CE6DB6&yid=DE12191FBD62783C&vid=16D8618C6164A3ED&iid=B31275AF3241DB2D&sid=FBB416F02256D8AA&eid=A621DEC64CBC4DA1&journal_id=1004-4213&journal_name=光子学报&referenced_num=0&reference_num=7