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Computational and Mathematical Methods in Medicine
Volume 2013, Article ID 368514, 15 pages
http://dx.doi.org/10.1155/2013/368514
Research Article

Constructing Benchmark Databases and Protocols for Medical Image Analysis: Diabetic Retinopathy

1Machine Vision and Pattern Recognition Laboratory, Department of Mathematics and Physics, Lappeenranta University of Technology (LUT), Skinnarilankatu 34, FI-53850 Lappeenranta, Finland
2Department of Signal Processing, Tampere University of Technology, Korkeakoulunkatu 10, FI-33720 Tampere, Finland
3Department of Ophthalmology, University of Eastern Finland, Yliopistonranta 1, FI-70211 Kuopio, Finland
4Department of Ophthalmology, University of Tampere, Biokatu 14, FI-33520 Tampere, Finland

Received 25 January 2013; Accepted 26 May 2013

Academic Editor: Carlo Cattani

Copyright © 2013 Tomi Kauppi et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

We address the performance evaluation practices for developing medical image analysis methods, in particular, how to establish and share databases of medical images with verified ground truth and solid evaluation protocols. Such databases support the development of better algorithms, execution of profound method comparisons, and, consequently, technology transfer from research laboratories to clinical practice. For this purpose, we propose a framework consisting of reusable methods and tools for the laborious task of constructing a benchmark database. We provide a software tool for medical image annotation helping to collect class label, spatial span, and expert's confidence on lesions and a method to appropriately combine the manual segmentations from multiple experts. The tool and all necessary functionality for method evaluation are provided as public software packages. As a case study, we utilized the framework and tools to establish the DiaRetDB1 V2.1 database for benchmarking diabetic retinopathy detection algorithms. The database contains a set of retinal images, ground truth based on information from multiple experts, and a baseline algorithm for the detection of retinopathy lesions.