IEEE J Biomed Health Inform. 2014 Jan;18(1):94-108. doi: 10.1109/JBHI.2013.2250984.
Cytologic screening has been widely used for detecting the cervical cancers. In this study, a semiautomatic PC-based cellular image analysis system was developed for segmenting nuclear and cytoplasmic contours and for computing morphometric and textual features to train support vector machine (SVM) classifiers to classify four different types of cells and to discriminate dysplastic from normal cells. A software program incorporating function, including image reviewing and standardized denomination of file names, was also designed to facilitate and standardize the workflow of cell analyses. Two experiments were conducted to verify the classification performance. The cross-validation results of the first experiment showed that average accuracies of 97.16% and 98.83%, respectively, for differentiating four different types of cells and in discriminating dysplastic from normal cells have been achieved using salient features (8 for four-cluster and 7 for two-cluster classifiers) selected with SVM recursive feature addition. In the second experiment, 70% (837) of the cell images were used for training and 30% (361) for testing, achieving an accuracy of 96.12% and 98.61% for four-cluster and two-cluster classifiers, respectively. The proposed system provides a feasible and effective tool in evaluating cytologic specimens.
细胞学筛查已被广泛用于检测宫颈癌。在本研究中,开发了一种基于 PC 的半自动细胞图像分析系统,用于分割核和细胞质轮廓,并计算形态和文本特征,以训练支持向量机 (SVM) 分类器来分类四种不同类型的细胞,并区分异型增生细胞和正常细胞。还设计了一个包含功能的软件程序,包括图像审查和文件命名的标准化,以促进和标准化细胞分析的工作流程。进行了两项实验来验证分类性能。第一项实验的交叉验证结果表明,使用 SVM 递归特征添加选择的显著特征(用于四聚类的 8 个和用于两聚类的 7 个)分别实现了区分四种不同类型的细胞和区分异型增生细胞和正常细胞的平均准确率为 97.16%和 98.83%。在第二项实验中,70%(837)的细胞图像用于训练,30%(361)用于测试,分别实现了四聚类和两聚类分类器的准确率为 96.12%和 98.61%。该系统为评估细胞学标本提供了一种可行且有效的工具。