我们提出了一种新方法,可以在2D超声心动图图像上自动轮廓左心室。与大多数基于预测细分面罩的现有分割方法不同,我们重点是预测该轮廓内(基础和顶点)中的心内膜轮廓和关键地标点。这提供了一种更接近专家如何执行手动注释的表示,因此产生了在生理上更合理的结果。我们提出的方法使用基于U-NET体系结构的两头网络。一个头预测了7个轮廓点,另一个头部预测了轮廓的距离图。将这种方法与U-NET和基于点的方法进行了比较,在具有里程碑意义的定位(<4.5mm)和与地面真相轮廓(<3.5mm)的距离方面,达到30 \%的性能增长。
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准确的不确定性估计是医学成像社区的关键需求。已经提出了多种方法,所有直接扩展分类不确定性估计技术。独立像素的不确定性估计通常基于神经网络的概率解释,不考虑解剖学的先验知识,因此为许多细分任务提供了次优的结果。因此,我们提出了不确定性预测方法的酥脆图像分割。 Crisp以其核心实现了一种对比的方法来学习一个共同的潜在空间,该方法编码有效分割及其相应图像的分布。我们使用此联合潜在空间将预测与数千个潜在矢量进行比较,并提供解剖学上一致的不确定性图。在涉及不同方式和器官的四个医学图像数据库上进行的综合研究强调了我们方法的优势与最先进的方法相比。
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Entrainment is the phenomenon by which an interlocutor adapts their speaking style to align with their partner in conversations. It has been found in different dimensions as acoustic, prosodic, lexical or syntactic. In this work, we explore and utilize the entrainment phenomenon to improve spoken dialogue systems for voice assistants. We first examine the existence of the entrainment phenomenon in human-to-human dialogues in respect to acoustic feature and then extend the analysis to emotion features. The analysis results show strong evidence of entrainment in terms of both acoustic and emotion features. Based on this findings, we implement two entrainment policies and assess if the integration of entrainment principle into a Text-to-Speech (TTS) system improves the synthesis performance and the user experience. It is found that the integration of the entrainment principle into a TTS system brings performance improvement when considering acoustic features, while no obvious improvement is observed when considering emotion features.
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