arXiv:2505.00578eess.IVq-bio.QM2025-05

用AI自动分割微生物细胞,高效分析其形态特征。

AI-Driven Segmentation and Analysis of Microbial Cells

  • 基于去噪与SAM模型实现零样本细胞分割
  • 准确提取长度、宽度、体积等关键参数
  • 适合微生物形态学与极端环境研究者

研究微生物的生长与代谢有助于揭示其适应严酷环境的进化机制,对微生物研究和生物技术应用至关重要。本研究开发了一套基于AI的图像分析系统,可高效分割单个细胞并定量分析关键细胞特征。系统包含四个模块:首先,去噪算法提升对比度并抑制噪声,同时保留细小细胞结构;其次,使用无需额外训练的Segment Anything Model(SAM)实现精准零样本分割;第三,通过后处理去除过分割掩膜以优化结果;最后,定量分析算法提取平均强度、长度、宽度和体积等特征。结果表明,去噪与后处理显著提升了SAM在该领域的分割精度。无需人工标注,该AI流程可自动勾画细胞边界、编号并计算关键参数,具有高准确性。该框架将推动高分辨率荧光显微图像的高效自动化定量分析,助力研究极端微生物在恶劣环境中生存与代谢的适应机制。

原文摘要 · Abstract (English)

Studying the growth and metabolism of microbes provides critical insights into their evolutionary adaptations to harsh environments, which are essential for microbial research and biotechnology applications. In this study, we developed an AI-driven image analysis system to efficiently segment individual cells and quantitatively analyze key cellular features. This system is comprised of four main modules. First, a denoising algorithm enhances contrast and suppresses noise while preserving fine cellular details. Second, the Segment Anything Model (SAM) enables accurate, zero-shot segmentation of cells without additional training. Third, post-processing is applied to refine segmentation results by removing over-segmented masks. Finally, quantitative analysis algorithms extract essential cellular features, including average intensity, length, width, and volume. The results show that denoising and post-processing significantly improved the segmentation accuracy of SAM in this new domain. Without human annotations, the AI-driven pipeline automatically and efficiently outlines cellular boundaries, indexes them, and calculates key cellular parameters with high accuracy. This framework will enable efficient and automated quantitative analysis of high-resolution fluorescence microscopy images to advance research into microbial adaptations to grow and metabolism that allow extremophiles to thrive in their harsh habitats.

微生物分析图像分割AI辅助细胞形态

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