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arXiv 2103.10255cs.CVcs.LGq-bio.QM
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用于3D成像中有效跟踪的等变滤波器

Equivariant Filters for Efficient Tracking in 3D Imaging

Brigham and Women’s Hospital(布莱根妇女医院);Harvard Medical School(哈佛医学院);CSAIL, Massachusetts Institute of Technology(麻省理工学院计算机科学与人工智能实验室);Boston Children’s Hospital(波士顿儿童医院)

Daniel Moyer, Esra Abaci Turk, P Ellen Grant, William M. Wells, Polina Golland

摘要:

我们展示了一种具有固定计算成本和最先进性能的3D图像对象跟踪方法。以前的方法从卷积层预测变换参数。相反,我们提出了一种架构,该架构不包括卷积特征的平坦化或完全连接的层,而是依赖于等变滤波器来保留输入和输出之间的变换(例如rot./输入旋转/平移输出)。然后从过滤器的输出以封闭形式导出变换。这种方法对于需要低延迟的应用程序(如实时跟踪)非常有用。我们在合成增强成人脑MRI以及胎儿脑MRI上展示了我们的模型,这是预期的用例。

英文摘要:

We demonstrate an object tracking method for 3D images with fixed computational cost and state-of-the-art performance. Previous methods predicted transformation parameters from convolutional layers. We instead propose an architecture that does not include either flattening of convolutional features or fully connected layers, but instead relies on equivariant filters to preserve transformations between inputs and outputs (e.g. rot./trans. of inputs rotate/translate outputs). The transformation is then derived in closed form from the outputs of the filters. This method is useful for applications requiring low latency, such as real-time tracking. We demonstrate our model on synthetically augmented adult brain MRI, as well as fetal brain MRI, which is the intended use-case.

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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