Preprocessed Vision Transformers and Classical Classifiers in Diagnosing Skin Diseases

Yıl 2025, Cilt: 16 Sayı: 1, 69 - 80

Bilal Şenol , Uğur Demiroğlu

https://doi.org/10.24012/dumf.1577835

Öz

Vision Transformers (ViTs) are the state-of-the-art deep learning technology in medicine. ViTs require a large number of parameters, so they need a relatively large dataset for learning. This is currently possible due to the digitization of healthcare. As a comparison, we also use classical classifiers, which are characterized by a relatively low number of input data. In clinical practice, high-resolution images such as those from dermoscopy, confocal microscopy, reflectance confocal microscopy, and Raman spectroscopy are used to diagnose skin diseases. ViTs have potential in clinical practice. The advantage of the model over convolutional neural networks is that they do not use convolutional operations. Preprocessed images from a dataset were classified experimentally using five ViTs models of various sizes and respective classical classifiers. Comparative experiments were conducted also on preprocessed dermatoscopic images from another dataset. This article introduces an artificial intelligence method for identifying various skin conditions. The dataset contains images that are classified into 5 categories: normal, melanoma, arsenic, psoriasis, and eczema. During the study, skin images underwent initial processing using the Adaptive Histogram Equalization (AHE) technique, which enhanced the contrast to reveal important details. Following this preprocessing, features were obtained from the images using ViTs, renowned for their ability to capture intricate visual information. These extracted features were then utilized in conjunction with traditional machine learning classifiers, resulting in accurate diagnosis of the skin conditions being studied. The findings emphasize the effectiveness of combining ViTs with classical classifiers in tasks related to medical image classification.

Anahtar Kelimeler

Skin Diseases, Preprocessing, Adaptive Histogram Equalization, Classification, Vision Transformers

Cilt Hastalıklarının Tanısında Ön İşlemli Görüntü Dönüştürücüler (Vision Transformers) ve Klasik Sınıflandırıcılar

Öz

Görüntü Dönüştürücüler (ViT'ler), tıpta son teknoloji derin öğrenme teknolojisidir. ViT'ler çok sayıda parametre gerektirir, bu nedenle öğrenme için nispeten büyük bir veri kümesine ihtiyaç duyarlar. Bu, şu anda sağlık hizmetlerinin dijitalleştirilmesi nedeniyle mümkündür. Karşılaştırma olarak, nispeten düşük sayıda giriş verisiyle karakterize edilen klasik sınıflandırıcıları da kullanıyoruz. Klinik uygulamada, dermoskopi, konfokal mikroskopi, yansıma konfokal mikroskopi ve Raman spektroskopisi gibi yüksek çözünürlüklü görüntüler cilt hastalıklarını teşhis etmek için kullanılır. ViT'lerin klinik uygulamada potansiyeli vardır. Modelin evrişimli sinir ağlarına göre avantajı, evrişimli işlemler kullanmamasıdır. Bir veri kümesinden önceden işlenmiş görüntüler, çeşitli boyutlarda beş ViT modeli ve ilgili klasik sınıflandırıcılar kullanılarak deneysel olarak sınıflandırıldı. Başka bir veri kümesinden önceden işlenmiş dermatoskopik görüntüler üzerinde de karşılaştırmalı deneyler yürütüldü. Bu makale, çeşitli cilt rahatsızlıklarını tanımlamak için bir yapay zeka yöntemini tanıtmaktadır. Veri seti, 5 kategoriye ayrılmış görüntüler içerir: normal, melanom, arsenik, sedef hastalığı ve egzama. Çalışma sırasında, cilt görüntüleri, önemli ayrıntıları ortaya çıkarmak için kontrastı artıran Uyarlamalı Histogram Eşitleme (AHE) tekniği kullanılarak ilk işleme tabi tutuldu. Bu ön işlemenin ardından, karmaşık görsel bilgileri yakalama yetenekleriyle ünlü ViT'ler kullanılarak görüntülerden özellikler elde edildi. Çıkarılan bu özellikler daha sonra geleneksel makine öğrenimi sınıflandırıcılarıyla birlikte kullanıldı ve incelenen cilt rahatsızlıklarının doğru bir şekilde teşhis edilmesiyle sonuçlandı. Bulgular, tıbbi görüntü sınıflandırmasıyla ilgili görevlerde ViT'leri klasik sınıflandırıcılarla birleştirmenin etkinliğini vurgulamaktadır.

Anahtar Kelimeler

Cilt Hastalıkları, Önişleme, Uyarlanabilir Histogram Eşitleme, Sınıflandırma, Görme Dönüştürücüler

Kaynakça

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