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arXiv 1908.05317eess.IVcs.CV
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糖尿病足溃疡缺血和感染的识别:数据集和技术

Recognition of Ischaemia and Infection in Diabetic Foot Ulcers: Dataset and Techniques

Manchester Metropolitan University(曼彻斯特城市大学);Lancashire Teaching Hospital(兰开夏教学医院);University of Manchester(曼彻斯特大学);Manchester Royal Infirmary(曼彻斯特皇家医院);Sun Yat-sen University(中山大学)

Manu Goyal, Neil Reeves, Satyan Rajbhandari, Naseer Ahmad, Chuan Wang, Moi Hoon Yap

摘要:

随着基于图像的机器学习算法的发展,使用计算机方法识别和分析糖尿病足溃疡(DFU)是一个新兴的研究领域。现有的研究使用视觉计算机化的方法主要集中在识别,检测和分割的视觉外观的DFU以及组织分类。根据DFU医学分类系统,感染(伤口中的细菌)和缺血(血液供应不足)的存在对DFU评估具有重要的临床意义,用于预测截肢的风险。在这项工作中,我们提出了一个新的数据集和计算机视觉技术来识别DFU中感染和缺血的存在。这是第一次为研究目的引入带有缺血和感染病例地面真实标签的DFU数据集。对于手工机器学习方法,我们提出了一种新的特征描述符,即超像素颜色描述符。然后,我们使用卷积神经网络(CNN)模型更有效地识别缺血和感染。我们建议使用一种自然的数据增强方法,该方法识别足部图像上的感兴趣区域,并专注于寻找该区域中存在的显著特征。最后,我们评估了我们提出的技术的二进制分类,即缺血与非缺血和感染与非感染的性能。总的来说,我们的方法在缺血的分类中比感染表现得更好。我们发现,与手工机器学习算法相比,我们提出的Ensemble CNN深度学习算法在两个分类任务中的表现更好,在缺血分类中的准确率为90%,在感染分类中的准确率为73%。

英文摘要:

Recognition and analysis of Diabetic Foot Ulcers (DFU) using computerized methods is an emerging research area with the evolution of image-based machine learning algorithms. Existing research using visual computerized methods mainly focuses on recognition, detection, and segmentation of the visual appearance of the DFU as well as tissue classification. According to DFU medical classification systems, the presence of infection (bacteria in the wound) and ischaemia (inadequate blood supply) has important clinical implications for DFU assessment, which are used to predict the risk of amputation. In this work, we propose a new dataset and computer vision techniques to identify the presence of infection and ischaemia in DFU. This is the first time a DFU dataset with ground truth labels of ischaemia and infection cases is introduced for research purposes. For the handcrafted machine learning approach, we propose a new feature descriptor, namely the Superpixel Color Descriptor. Then we use the Ensemble Convolutional Neural Network (CNN) model for more effective recognition of ischaemia and infection. We propose to use a natural data-augmentation method, which identifies the region of interest on foot images and focuses on finding the salient features existing in this area. Finally, we evaluate the performance of our proposed techniques on binary classification, i.e. ischaemia versus non-ischaemia and infection versus non-infection. Overall, our method performed better in the classification of ischaemia than infection. We found that our proposed Ensemble CNN deep learning algorithms performed better for both classification tasks as compared to handcrafted machine learning algorithms, with 90% accuracy in ischaemia classification and 73% in infection classification.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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