仅用强度信息实现子宫颈组织自动分割,精度高且无需复杂预处理。
Intensity-based Segmentation of Tissue Images Using a U-Net with a Pretrained ResNet-34 Encoder: Application to Mueller Microscopy
- 基于M11强度构建U-Net模型,采用预训练ResNet-34编码器
- 70张图像训练下像素准确率达89.71%,组织Dice系数达80.96%
- 适合小样本生物医学图像,可推广至多种组织和成像模态
薄组织切片的人工标注仍是穆勒显微镜中的耗时步骤,限制了其可扩展性。本文提出一种新型自动化方法,仅使用穆勒矩阵的总强度元素M11作为输入,结合预训练的ResNet-34编码器与U-Net结构,对小鼠子宫颈切片图像中的四类区域(背景、内口、宫颈组织、阴道壁)进行分割。在仅70张宫颈组织切片的训练数据下,模型在独立测试集上达到89.71%的像素准确率和80.96%的平均组织Dice系数。来自ImageNet的迁移学习使模型在典型小样本生物医学图像场景中仍保持高精度。该强度驱动框架所需预处理极少,易于拓展至其他成像模态和组织类型,并提供公开的图形化标注工具以支持实际部署。
原文摘要 · Abstract (English)
Manual annotation of the images of thin tissue sections remains a time-consuming step in Mueller microscopy and limits its scalability. We present a novel automated approach using only the total intensity M11 element of the Mueller matrix as an input to a U-Net architecture with a pretrained ResNet-34 encoder. The network was trained to distinguish four classes in the images of murine uterine cervix sections: background, internal os, cervical tissue, and vaginal wall. With only 70 cervical tissue sections, the model achieved 89.71% pixel accuracy and 80.96% mean tissue Dice coefficient on the held-out test dataset. Transfer learning from ImageNet enables accurate segmentation despite limited size of training dataset typical of specialized biomedical imaging. This intensity-based framework requires minimal preprocessing and is readily extensible to other imaging modalities and tissue types, with publicly available graphical annotation tools for practical deployment.
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