On the illumination compensation of retinal images by means of the bidimensional empirical mode decomposition

Andrés G. Marrugo; Raúl Vargas; Melet Chirino; María S. Millán

doi:10.1117/12.2211464

22 December 2015 On the illumination compensation of retinal images by means of the bidimensional empirical mode decomposition

Andrés G. Marrugo, Raúl Vargas, Melet Chirino, María S. Millán

Author Affiliations +

Proceedings Volume 9681, 11th International Symposium on Medical Information Processing and Analysis; 96810D (2015) https://doi.org/10.1117/12.2211464
Event: 11th International Symposium on Medical Information Processing and Analysis (SIPAIM 2015), 2015, Cuenca, Ecuador

Abstract

Retinal images are used for diagnostic purposes by ophthalmologists. However, despite controlled conditions in acquisition retinal images often suffer from non-uniform illumination which hinder their clinical use. In this work we propose the compensation of the illumination by modeling the intensity as a sum of non-stationary signals using bidimensional empirical mode decomposition (BEMD). We compare the estimation and compensation of the background illumination with a widely used technique based retinal image pixel classification. The proposed method has shown to provide a better estimation of the background illumination, particularly in complicated areas such as the optic disk (usually bright) and the periphery of fundus images (usually dim).

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Andrés G. Marrugo, Raúl Vargas, Melet Chirino, and María S. Millán "On the illumination compensation of retinal images by means of the bidimensional empirical mode decomposition", Proc. SPIE 9681, 11th International Symposium on Medical Information Processing and Analysis, 96810D (22 December 2015); https://doi.org/10.1117/12.2211464

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