基于深度学习的肾小球病理图像识别与分类
Recognition and Classification of Glomerular Pathological Images Based on Deep Learning
-
摘要: 病理切片中肾小球的识别和分类是诊断肾脏病变程度和病变类型的关键,为解决肾小球的识别和分类问题,从中检测出肾小球并进行分类,设计了一个基于深度学习的完整的肾小球检测及分类框架.该框架包括肾小球识别的4个阶段,第1阶段的扫描窗生成中,设计一种网络框架RGNet,用于初步判断肾小球可能出现的位置;第2阶段的检测和粗分类中,针对肾小球数据改进了Faster R-CNN;第3阶段基于NMS算法设计了NMS-Lite算法,将检测到的肾小球进行合并;在第4阶段的细分类中,使用数据增强等技巧训练2个神经网络,实现肾小球的病变程度分类.实验结果表明,所提肾小球检测方法在测试集上取得了与同类方法可比的精度,且在一定程度上解决了相似类别的肾小球难以区分的问题.Abstract: The identification and classification of glomeruli in pathological sections is the key to diagnosing the degree and type of renal lesions.In order to solve the problem of glomerular recognition and classification,a complete glomerular detection and classification framework based on deep learning is designed.Glomeruli are detected and classified in the entire slice image.The framework includes four stages of glomerular recognition.In the first stage of scanning window generation,a new network framework,RGNet,is designed to initially determine the possible location of glomeruli.In the second stage of detection and coarse classification,Faster R-CNN is improved for glomerular data.In the third stage,the NMS-Lite algorithm is designed based on the NMS algo-rithm to merge the detected glomeruli.In the fourth stage of fine classification,two neural networks are trained using data augmentation to classify the degree of glomerular lesions.The experimental results has show that the glomerulus detection method proposed in this paper has achieved comparable accuracy on the test set with similar methods,and to a certain extent solves the problem that similar types of glomeruli are difficult to dis-tinguish.