Segmentation of OPG Images in Studying Jawbone Diseases
Image processing in biomedical applications is strongly developing issue.Many methods and approaches for image preprocessing,segmentation and visualization were described.This paper describes OPG image processing.The aim of processing is to segment regions of jawbone cysts and evaluate their local descriptors.It is necessary to choose suitable segmentation method because of adverse parameters of regions.The regions of the cysts are of low contrast and the pixel intensity distribution is not homogenous.The level set,the watershed and the livewire segmentation method were chosen to testing.The results are compared.The second step of processing is to evaluate local descriptors of segmented regions which correspond to cysts.Several parameters were chosen to describe these regions-region area,mean gray value of intensities,modal gray value of intensities,standard deviation of intensities,minimal and maximal gray value of intensities,integrated intensity,median of intensities and shape descriptors of region(perimeter,circularity,aspect ratio,roundness and solidity).Values of these parameters will be used in following development of semiautomatic processing method with regard to current assessment of cysts by doctors.The algorithm for classification of the type of cyst is presented.
J.Mikulka
Department of Theoretical and Experimental Electrical Engineering Brno University of Technology,Kolejní4,Brno 612 00,Czech Republic
国际会议
Progress in Electromagnetics Research Symposium 2013(2013年电磁学研究新进展学术研讨会)
台北
英文
21-24
2013-03-01（万方平台首次上网日期，不代表论文的发表时间）