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Ruwan Tennakoon

4 accepted papers

2025

Direct Estimation of Attenuation Information from Sinograms for Positron Emission Tomography Reconstruction

IJCAI 2025

Positron Emission Tomography (PET) is a powerful imaging modality for assessing biochemical processes within the body. However, accurate image reconstruction is challenged by photon attenuation, particularly in dense structures such as bones, leading to quantification errors and reduced diagnostic c

2022

ITSA: An Information-Theoretic Approach to Automatic Shortcut Avoidance and Domain Generalization in Stereo Matching Networks

CVPR 2022poster

State-of-the-art stereo matching networks trained only on synthetic data often fail to generalize to more challenging real data domains. In this paper, we attempt to unfold an important factor that hinders the networks from generalizing across domains: through the lens of shortcut learning. We demon…

Cited by 46PDFcodeScholar
2022

Maximum Consensus by Weighted Influences of Monotone Boolean Functions

CVPR 2022poster

Maximisation of Consensus (MaxCon) is one of the most widely used robust criteria in computer vision. Tennakoon et al. (CVPR2021), made a connection between MaxCon and estimation of influences of a Monotone Boolean function. In such, there are two distributions involved: the distribution defining th…

Cited by 3PDFScholar
2021

Consensus Maximisation Using Influences of Monotone Boolean Functions

CVPR 2021poster

Consensus maximisation (MaxCon), widely used for robust fitting in computer vision, aims to find the largest subset of data that fits the model within some tolerance level. In this paper, we outline the connection between MaxCon problem and the abstract problem of finding the maximum upper zero of a…

Cited by 11PDFcodeScholar