Preprint / Version 1

Deteksi Covid-19 Pada Citra Sinar-x Dada menggunakan Pre-training Deep Autoencoder

##article.authors##

  • Novanto Yudistira Universitas Brawijaya

Keywords:

unsupervised learning, COVID-19 X-ray, autoencoder, deep learning

Abstract

Pada awal tahun 2020, virus baru bernama COVID-19 diidentifikasi di kota Wuhan, China. Virus inimenyebarkebanyak negaradengan sangat cepat hingga pada waktu yang berdekatan WHO menetapkan virus tersebut sebagai pandemi. Virus ini menyerangsistempernafasan dandapat menyebabkan komplikasi terhadap penyakit lainnya seperti pneumonia, gagal ginjal, hingga dapat menyebabkan pengidap meninggal dunia. Deteksi virus COVID-19 ini umumnya menggunakan tes laboratorium dengan metode RT-PCR untuk mendapatkan hasil yang akurat. Sayangnya, tes ini membutuhkan waktu yang cukup lama yaitu sekitar 24 jam untuk mendapatkan hasil. Selain menggunakan tes RT-PCR, beberapa penelitian menunjukkan bahwa deteksi menggunakan citra sinar-X menunjukkan hasil yang cukup akurat dengan waktu prediksi yang lebih cepat. Citra sinar-X yang didominasi warna dalam jangkauan grayscale dapat dikatakan memiliki karakteristik yang berbeda jika dibandingkan dengan citra secara umumsehingga dalam penelitian inieksperimendilakukan terhadap pelatihan untuk kasus klasifikasi citra sinar-X dengan melatih model mulai dari awal (scratch). Namun seringkali model yang dilatih tanpa adanya pretraining menyebabkan model tidak dapat mencapai performa yang cukup baik. Salah satu bentuk metode pretrainingyang dapatdigunakanadalah penggunaan autoencoder sebagai model untuk rekonstruksi citra. Dalam penelitian ini pelatihan menggunakan pretraining autoencoder menghasilkan akurasi terbaik sebesar 81,78% dengantambahan metode CutMix, color manipulation, dan rotation sebagai augmentasi. Kami juga membuktikan bahwa penambahan pretraining autoencoder secara konsisten dapat meningkatkan akurasi hingga 2,58% pada model yang dilatih dariawal (scratch).

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Published

2021-09-21

Section

Preprints