Search Results for author: Tianyu Ma

Found 9 papers, 6 papers with code

Label conditioned segmentation

1 code implementation17 Mar 2022 Tianyu Ma, Benjamin C. Lee, Mert R. Sabuncu

For segmentation tasks with multiple classes, the standard approach is to use a network that computes a multi-channel probabilistic segmentation map, with each channel representing one class.

Segmentation Semantic Segmentation

Hyper-Convolutions via Implicit Kernels for Medical Imaging

1 code implementation6 Feb 2022 Tianyu Ma, Alan Q. Wang, Adrian V. Dalca, Mert R. Sabuncu

The key building block of a CNN is the convolutional kernel that aggregates information from the pixel neighborhood and shares weights across all pixels.

Hyper-Convolution Networks for Biomedical Image Segmentation

1 code implementation IEEE/CVF Winter Conference on Applications of Computer Vision (WACV) 2022 Tianyu Ma, Adrian V. Dalca, Mert R. Sabuncu

In this paper, we propose a powerful novel building block, the hyper-convolution, which implicitly represents the convolution kernel as a function of kernel coordinates.

Image Segmentation Semantic Segmentation

Geodesic random walks, diffusion processes and Brownian motion on Finsler manifolds

no code implementations16 Feb 2021 Tianyu Ma, Vladimir S. Matveev, Ilya Pavlyukevich

We show that geodesic random walks on a complete Finsler manifold of bounded geometry converge to a diffusion process which is, up to a drift, the Brownian motion corresponding to a Riemannian metric.

Differential Geometry Analysis of PDEs Probability

Ensembling Low Precision Models for Binary Biomedical Image Segmentation

no code implementations16 Oct 2020 Tianyu Ma, Hang Zhang, Hanley Ong, Amar Vora, Thanh D. Nguyen, Ajay Gupta, Yi Wang, Mert Sabuncu

Our core idea is straightforward: A diverse ensemble of low precision and high recall models are likely to make different false positive errors (classifying background as foreground in different parts of the image), but the true positives will tend to be consistent.

Image Segmentation Lesion Segmentation +3

Volumetric landmark detection with a multi-scale shift equivariant neural network

1 code implementation3 Mar 2020 Tianyu Ma, Ajay Gupta, Mert R. Sabuncu

Deep neural networks yield promising results in a wide range of computer vision applications, including landmark detection.

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