Quantitative Measures for Medical Fundus and Mammography Images Enhancement.

Monserrate Intriago-Pazmiño; Julio Ibarra-Fiallo; Adán Guzmán Castillo; Raúl Alonso Calvo; José Crespo

doi:10.9781/ijimai.2022.12.002

Authors

Monserrate Intriago-Pazmiño Universidad Politécnica de Madrid
Julio Ibarra-Fiallo Universidad San Francisco de Quito
Adán Guzmán Castillo National Polytechnic School
Raúl Alonso Calvo Universidad Politécnica de Madrid
José Crespo Universidad Politécnica de Madrid

DOI:

https://doi.org/10.9781/ijimai.2022.12.002

Keywords:

Contrast, Medical Images, Mammogram

Supporting Agencies

We thank Metrofraternidad Foundation, Quito, Ecuador, for providing the ROPFI dataset.

Abstract

Enhancing the visibility of medical images is part of the initial or preprocessing phase within a computer vision system. This image preparation is essential for subsequent system tasks such as segmentation or classification. Therefore, quantitative validation of medical image preprocessing is crucial. In this work, four metrics are studied: Contrast Improvement Index (CII), Enhancement Measurement Estimation (EME), Entropy EME (EMEE), and Entropy. The objective is to find the best parameters for each metric. The study is performed on five medical image datasets, three retinal fundus sets (DRIVE, ROPFI, HRF-POORQ), and two mammography image sets (MIAS, DDSM). Metrics are calculated using a binary mask image to discard the background. Using the fundus and mask datasets, the best results were obtained with the EMEE and EMEE metrics, which achieved mean improvements of up to 186% and 75%, respectively. For mammography datasets and using masks of the region of interest, the two metrics with the highest percentage improvement were CII and EMEE, which obtained means of up to 396% and 129%, respectively. Based on the experimental results provided, we can conclude that EMEE, EME, and CII metrics can achieve better enhancement assessment in this type of medical imaging.

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