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Daniel Alexander

3 accepted papers

2024

Tackling Structural Hallucination in Image Translation with Local Diffusion

ECCV 2024oral

"Recent developments in diffusion models have advanced conditioned image generation, yet they struggle with reconstructing out-of-distribution (OOD) images, such as unseen tumors in medical images, causing “image hallucination” and risking misdiagnosis. We hypothesize such hallucinations result from…

2020

Disentangling Human Error from Ground Truth in Segmentation of Medical Images

NeurIPS 2020poster

Recent years have seen increasing use of supervised learning methods for segmentation tasks. However, the predictive performance of these algorithms depends on the quality of labels. This problem is particularly pertinent in the medical image domain, where both the annotation cost and inter-observer…