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A Pixel-Wise Distance Regression Approach for Joint Retinal Optical Disc and Fovea Detection

  • Maria Ines Meyer
  • Adrian Galdran
  • Ana Maria Mendonça
  • Aurélio Campilho
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11071)

Abstract

This paper introduces a novel strategy for the task of simultaneously locating two key anatomical landmarks in retinal images of the eye fundus, namely the optic disc and the fovea. For that, instead of attempting to classify each pixel as belonging to the background, the optic disc, or the fovea center, which would lead to a highly class-imbalanced setting, the problem is reformulated as a pixelwise regression task. The regressed quantity consists of the distance from the closest landmark of interest. A Fully-Convolutional Deep Neural Network is optimized to predict this distance for each image location, implicitly casting the problem into a per-pixel Multi-Task Learning approach by which a globally consistent distribution of distances across the entire image can be learned. Once trained, the two minimal distances predicted by the model are selected as the locations of the optic disc and the fovea. The joint learning of every pixel position relative to the optic disc and the fovea favors an automatic understanding of the overall anatomical distribution. This results in an effective technique that can detect both locations simultaneously, as opposed to previous methods that handle both tasks separately. Comprehensive experimental results on a large public dataset validate the proposed approach.

Keywords

Optic Disk Detection Fovea detection Retinal Image Analysis 

Notes

Acknowledgments

This work is funded by the North Portugal Regional Operational Programme (NORTE 2020), under the PORTUGAL 2020 Partnership Agreement, and the European Regional Development Fund (ERDF), within the project “NanoSTIMA: Macro-to-Nano Human Sensing: Towards Integrated Multimodal Health Monitoring and Analytics/NORTE-01-0145-FEDER-000016”. The Titan Xp used for this research was donated by the NVIDIA Corporation.

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.INESC-TEC - Institute for Systems and Computer Engineering, Technology and SciencePortoPortugal
  2. 2.Faculdade de Engenharia da Universidade do PortoPortoPortugal

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