(Tokat Gaziosmanpaşa Üniversitesi)
(Tokat Gaziosmanpaşa Üniversitesi)
(Tokat Gaziosmanpaşa Üniversitesi)
Yıl: 2019Cilt: 27Sayı: 1ISSN: 1300-0632 / 1300-0632Sayfa Aralığı: 499 - 515İngilizce

88 0
Detection of hemorrhage in retinal images using linear classifiers and iterative thresholding approaches based on firefly and particle swarm optimization algorithms
We propose a novel iterative thresholding approach based on firefly and particle swarm optimization to be used for the detection of hemorrhages, one of the signs of diabetic retinopathy disease. This approach consists of the enhancement of the image using basic preprocessing methods, the segmentation of vessels with the help of Gabor and Top-hat transformation for the removal of the vessels from the image, the determination of the number of regions with hemorrhages and pixel counts in these regions using firefly algorithm (FFA) and particle swarm optimization algorithm (PSOA)-based iterative thresholding, and the detection of hemorrhages with the help of a support vector machine (SVM) and linear regression (LR)-based classifier. In the preprocessing step, color space selection, brightness and contrast adjustment, and adaptive histogram equalization are applied to enhance retinal images, respectively. In the step of segmentation, blood vessels are detected by using Gabor and Top-hat transformations and are removed from the image to avoid confusion with hemorrhagic regions in the retinal image. In the iterative thresholding step, the number of hemorrhagic regions and pixel counts in these regions are determined by using an iterative thresholding approach that generates different thresholding values with the FFA/PSOA. In the classification step, the hemorrhagic regions and pixel counts obtained by the iterative thresholding are used as inputs in the LR/SVM-based classifier. PSOA-based iterative thresholding and the SVM classifier achieved 96.7% sensitivity, 91.4% specificity, and 94.1% accuracy for hemorrhage detection. Finally, the experiments show that the correct classification rates and time performances of the PSOA-based iterative thresholding algorithm are better than those of the FFA in hemorrhage detection. In addition, the proposed approach can be used as a diagnostic decision support system for detecting hemorrhages with high success rate.
Fen > Mühendislik > Bilgisayar Bilimleri, Yapay Zeka
Fen > Mühendislik > Bilgisayar Bilimleri, Sibernitik
Fen > Mühendislik > Bilgisayar Bilimleri, Donanım ve Mimari
Fen > Mühendislik > Bilgisayar Bilimleri, Bilgi Sistemleri
Fen > Mühendislik > Bilgisayar Bilimleri, Yazılım Mühendisliği
Fen > Mühendislik > Bilgisayar Bilimleri, Teori ve Metotlar
Fen > Mühendislik > Mühendislik, Elektrik ve Elektronik
DergiAraştırma MakalesiErişime Açık
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