马氏距离
质心
人工智能
云纹
计算机视觉
计算机科学
特征(语言学)
模式识别(心理学)
脊柱侧凸
线性判别分析
特征向量
流离失所(心理学)
医学
心理学
哲学
语言学
外科
心理治疗师
作者
Hyoung Seop Kim,Seiji Ishikawa,Yoshinori Ohtsuka,Hisashi Shimizu,Saito Takashi,Max A. Viergever
出处
期刊:IEEE Transactions on Medical Imaging
[Institute of Electrical and Electronics Engineers]
日期:2001-01-01
卷期号:20 (12): 1314-1320
被引量:36
摘要
This paper presents a technique for automating human scoliosis detection by computer based on moiré topographic images of human backs. Scoliosis is a serious disease often suffered by teenagers. For prevention, screening is performed at schools in Japan employing a moiré method in which doctors inspect moiré images of subjects' backs visually. The inspection of a large number of moiré images collected by the school screening causes exhaustion of doctors and leads to misjudgment. Computer-aided diagnosis of scoliosis has, therefore, been requested eagerly by orthopedists. To automate the inspection process, unlike existent three-dimensional techniques, displacement of local centroids is evaluated two-dimensionally between the left-hand side and the right-hand side of the moiré images in the present technique. The technique was applied to real moiré images to draw a distinction between normal and abnormal cases. According to the leave-out method, the entire 120 image data (60 normal and 60 abnormal) were separated into three data sets. The linear discriminant function based on Mahalanobis distance was defined on the two-dimensional feature space employing one of the data sets containing 40 moiré images and classified 80 images in the remaining two sets. The technique finally achieved the average classification rate of 88.3%.
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