Search Results for author: Prashnna K. Gyawali

Found 4 papers, 0 papers with code

Learning Transferable Object-Centric Diffeomorphic Transformations for Data Augmentation in Medical Image Segmentation

no code implementations25 Jul 2023 Nilesh Kumar, Prashnna K. Gyawali, Sandesh Ghimire, Linwei Wang

To this end, we propose a novel object-centric data augmentation model that is able to learn the shape variations for the objects of interest and augment the object in place without modifying the rest of the image.

Data Augmentation Image Segmentation +4

T2FNorm: Extremely Simple Scaled Train-time Feature Normalization for OOD Detection

no code implementations28 May 2023 Sudarshan Regmi, Bibek Panthi, Sakar Dotel, Prashnna K. Gyawali, Danail Stoyanov, Binod Bhattarai

Indeed, the naive incorporation of feature normalization within neural networks does not guarantee substantial improvement in OOD detection performance.

Out of Distribution (OOD) Detection

Interpretable Modeling and Reduction of Unknown Errors in Mechanistic Operators

no code implementations2 Nov 2022 Maryam Toloubidokhti, Nilesh Kumar, Zhiyuan Li, Prashnna K. Gyawali, Brian Zenger, Wilson W. Good, Rob S. MacLeod, Linwei Wang

Prior knowledge about the imaging physics provides a mechanistic forward operator that plays an important role in image reconstruction, although myriad sources of possible errors in the operator could negatively impact the reconstruction solutions.

Image Reconstruction

Semi-Supervised Learning for Eye Image Segmentation

no code implementations17 Mar 2021 Aayush K. Chaudhary, Prashnna K. Gyawali, Linwei Wang, Jeff B. Pelz

Recent advances in appearance-based models have shown improved eye tracking performance in difficult scenarios like occlusion due to eyelashes, eyelids or camera placement, and environmental reflections on the cornea and glasses.

Image Segmentation Segmentation +1

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