Search Results for author: Varun Vasudevan

Found 5 papers, 0 papers with code

Learning Image Representations for Content Based Image Retrieval of Radiotherapy Treatment Plans

no code implementations6 Jun 2022 Charles Huang, Varun Vasudevan, Oscar Pastor-Serrano, Md Tauhidul Islam, Yusuke Nomura, Piotr Dubrowski, Jen-Yeu Wang, Joseph B. Schulz, Yong Yang, Lei Xing

To address these limitations, we propose a content based image retrieval (CBIR) method for retrieving dose distributions of previously planned patients based on anatomical similarity.

Content-Based Image Retrieval Retrieval

Image Classification using Graph Neural Network and Multiscale Wavelet Superpixels

no code implementations29 Jan 2022 Varun Vasudevan, Maxime Bassenne, Md Tauhidul Islam, Lei Xing

On the contrary, this study investigates image classification using graphs generated from an image-specific number of multiscale superpixels.

Graph Classification Image Classification +1

Learning from multiscale wavelet superpixels using GNN with spatially heterogeneous pooling

no code implementations1 Jan 2021 Maxime Bassenne, Varun Vasudevan, Lei Xing

In this study, we investigate learning from a new principled representation in which individual images are represented by an image-specific number of multiscale superpixels.

General Classification Graph Classification +2

On Sample Complexity of Projection-Free Primal-Dual Methods for Learning Mixture Policies in Markov Decision Processes

no code implementations15 Mar 2019 Masoud Badiei Khuzani, Varun Vasudevan, Hongyi Ren, Lei Xing

We compute the actions of a policy that is nearly as good as a policy chosen by a suitable oracle from a given mixture policy class characterized by the convex hull of a set of known base policies.

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