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arXiv 2501.01072cs.CV

面向超声图像的证据校准不确定性引导交互式分割范式

Evidential Calibrated Uncertainty-Guided Interactive Segmentation paradigm for Ultrasound Images

Shanghai University(上海大学);East China Normal University(华东师范大学);University of Illinois Urbana-Champaign(伊利诺伊大学厄巴纳-香槟分校)

Jiang Shang, Yuanmeng Wu, Xiaoxiang Han, Xi Chen, Qi Zhang

AI总结:

针对超声图像分割中交互方法效率低、提示多的问题,提出基于证据不确定性估计的 EUGIS 范式,通过优先采样高不确定性区域并引入可训练校准机制,在减少提示和迭代次数的同时提升分割性能。

摘要:

准确且鲁棒的超声图像分割对计算机辅助诊断系统至关重要。然而,超声成像的固有挑战,如模糊边界和斑点噪声,往往使传统分割方法难以取得良好性能。尽管通用图像分割近期取得了进展,例如 Segment Anything Model,但现有交互式分割方法仍然存在效率低下和缺乏专用性的问题。这些方法严重依赖大量精确的人工或随机采样提示进行交互,需要大量提示和迭代才能达到令人满意的性能。为应对这一挑战,我们提出了证据不确定性引导交互式分割(EUGIS),这是一种基于证据不确定性估计的端到端、高效分层交互式分割范式,用于超声图像分割。具体而言,EUGIS 利用基于 Dempster-Shafer 理论和 Subjective Logic 的证据不确定性估计,来衡量模型对不同区域预测的不确定性水平。通过优先对高不确定性区域进行采样,我们的方法能够有效模拟训练有素的放射科医生的交互行为,提高采样的针对性,同时减少所需的提示和迭代次数。此外,我们提出了一种可训练的不确定性估计校准机制,可以进一步优化确定性与不确定性之间的边界,从而增强不确定性估计的置信度。

英文摘要:

Accurate and robust ultrasound image segmentation is critical for computer-aided diagnostic systems. Nevertheless, the inherent challenges of ultrasound imaging, such as blurry boundaries and speckle noise, often cause traditional segmentation methods to struggle with performance. Despite recent advancements in universal image segmentation, such as the Segment Anything Model, existing interactive segmentation methods still suffer from inefficiency and lack of specialization. These methods rely heavily on extensive accurate manual or random sampling prompts for interaction, necessitating numerous prompts and iterations to reach satisfactory performance. In response to this challenge, we propose the Evidential Uncertainty-Guided Interactive Segmentation (EUGIS), an end-to-end, efficient tiered interactive segmentation paradigm based on evidential uncertainty estimation for ultrasound image segmentation. Specifically, EUGIS harnesses evidence-based uncertainty estimation, grounded in Dempster-Shafer theory and Subjective Logic, to gauge the level of uncertainty in the predictions of model for different regions. By prioritizing sampling the high-uncertainty region, our method can effectively simulate the interactive behavior of well-trained radiologists, enhancing the targeted of sampling while reducing the number of prompts and iterations required.Additionally, we propose a trainable calibration mechanism for uncertainty estimation, which can further optimize the boundary between certainty and uncertainty, thereby enhancing the confidence of uncertainty estimation.

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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