CAJ | 학술논문

提目的：在法医学鉴定中，采用单一的自适应阈值分割方法对锥形束CT下颌骨图像进行轮廓的提取，常产生区域断裂现象，因此需要对单一的分割方法进行改进，从而提高下颌骨外轮廓提取的精度。方法：腐蚀-重构和膨胀-重构等数学形态学的方法与阈值分割方法的组合使用可以明显克服上述缺陷。结果：通过单一的分割方法与组合改进方法分别对300幅锥形束CT 下颌骨图像进行阈值分割并对比分割效果，直接采用自适应阈值分割方法有228幅图像获取下颌骨外轮廓失败，而改进的方法仅有53幅图像无法获得下颌骨外轮廓。结论：改进方法能够明显抑制锥形束CT下颌骨图像在分割过程中出现的局部区域断裂现象。
제목적：재법의학감정중，채용단일적자괄응역치분할방법대추형속CT하합골도상진행륜곽적제취，상산생구역단렬현상，인차수요대단일적분할방법진행개진，종이제고하합골외륜곽제취적정도。방법：부식-중구화팽창-중구등수학형태학적방법여역치분할방법적조합사용가이명현극복상술결함。결과：통과단일적분할방법여조합개진방법분별대300폭추형속CT 하합골도상진행역치분할병대비분할효과，직접채용자괄응역치분할방법유228폭도상획취하합골외륜곽실패，이개진적방법부유53폭도상무법획득하합골외륜곽。결론：개진방법능구명현억제추형속CT하합골도상재분할과정중출현적국부구역단렬현상。
Objective :It would appear local region fracture phenomenon after segmentation of the cone beam CT mandible image by adaptive threshold segmentation algorithm (ATA ) in forensic medicine appraisal ,therefore ,this paper develops a new method to inhibit the fracture and improve the accuracy of auto-extracting mandible outlines . Methods :Erosion - reconstruction and dilation - reconstruction of mathematics morphology is applied in the processing of segmentation of cone beam CT image (ERDRS) .Results :By comparison with the ATA method and ERDRS method which extracts outlines from the mandible contour images ,ATA method has higher distortion 228/300 ratio while ERDRS has lower distortion 53/300 ratio .Conclusion :The improved method (ERDRS ) can be a very good way to inhibiting the local region fracture phenomenon in the processing of extraction outline from the cone beam CT mandible images .