Head and Neck Imaging
The Application of Grey Scale Normalization on Sinus CT Image
Author：ZHU Hao-dong, CHEN Ying, GONG Zhu-lin, ZHANG Lu
affiliation：Computer Science Department of Medical School, Shanghai Jiaotong University, shanghai 200025
PDFAbstract
Objective To design a rapid and effective grey scale normalization method on sinus CT images, which is used to eliminate or reduce the inconsistency of sinus CT image grey scale result from different settings of imaging factors. Methods After preliminary digitalized image processing, relative optic density transformation for grey scale are applied. We get grey scale normalized images and analyze the grey scale of before and after transformation images and pathological changed tissue regions for assessment of accuracy and consistency. Results After relative optic transformation, the mean and variance value of same pathological changed tissue grey scale are tend to more consistency. Conclusion The method has high operational speed and little outside influence, is helpful to followup image operation such as image recognition and image retrieval.
【Keyword】Sinus CT Image; Grey Scale Normalization; Digital Scan; Relative Optic Density(ROD)
【Chart number】R765.4; R445.3
【Document Identification Number】A
【DOI】10.3969/j.issn.1672-5131.2015.05.006
Chinese journal of CT and MRI
th13Volume， th 5 Issue
2015Year05Month
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