9
Jurnal Fisika 9 (1) (2019) 9-20
Jurnal Fisika
https://journal.unnes.ac.id/nju/index.php/jf/index
Deteksi Awal Retinopati Hipertensi Menggunakan Jaringan Syaraf Tiruan pada
Citra Fundus Mata
Violetta Vincentia, Nurhasanah
, Iklas Sanubary
Jurusan Fisika, Universitas Tanjungpura, Pontianak, Indonesia
Info Artikel
________________
Sejarah Artikel:
Diterima:
20 Maret 2019
Disetujui:
10 Juli 2019
Dipublikasikan:
11 Juli 2019
________________
Keywords:
Citra Fundus Mata,
GLCM, Jaringan
Syaraf Tiruan,
Retinopati Hipertensi
________________
ABSTRAK
________________________________________________________________________
Identifikasi fundus mata abnormal (retinopati hipertensi) dari citra fundus mata manusia telah
dilakukan menggunakan Jaringan Syaraf Tiruan (JST). Data yang digunakan berupa citra
fundus mata normal dan fundus mata abnormal. Pengolahan awal citra dilakukan dengan
menyeragamkan ukuran citra fundus menjadi 256 x 256 piksel. Citra fundus yang semula Red
Green Blue (RGB) diubah menjadi citra grayscale. Citra diolah menggunakan perataan kontras,
filter, penghapusan background, segmentasi dan masking untuk mendapat citra pembuluh
darah.Citra diekstraksi dengan menghitung ciri statistik menggunakan grey level co-occurence
matrix (GLCM) 4 arah yaitu 0
o
, 45
o
,90
o
, dan 135
o
pada jarak spasial 1. Ciri statistik yang
dihitung yaitu energi, kontras, korelasi, dan homogenitas sebagai input pada JST. Data dari
ekstraksi ciri diidentifikasi menggunakan jaringan syaraf tiruan propagasi balik dengan
arsitektur jaringan [17 7 1] dan fungsi pelatihan traingdm. Hasil dari pelatihan jaringan
menunjukkan Mean Square Error (MSE) sebesar 0,00025 sementara pengujian jaringan
menunjukkan nilai MSE sebesar 0,0464 dan akurasi 80%. Metode JST dapat digunakan untuk
deteksi awal retinopati hipertensi.
ABSTRACT
_________________________________________________________________
An identification of hypertensive retinopathy had been carried out from the fundus image of the human eye
using artificial neural networks (ANN). Data that were used in this research, the form of normal eye fundus
and abnormal eye fundus (hypertensive retinopathy) image. The preprocessing of the image was done by
standardizing the size of the fundus image to 256 x 256 pixel. Then the fundus image that was originally
RGB was converted into a grayscale image. After that, the image was processed by using contrast
smoothing, filtering, background removal, segmentation and masking to get an image with only blood
vessels. After the preprocessing, the image was extracted by calculating statistical characteristics used 4-ways
grey level co-occurrence matrix (GLCM) (0
o
, 45
o
, 90
o
, and 135
o
) at spatial distance 1. The characteristics of
statistics that were calculated energy, contrast, correlation, and homogeneity as input on ANN. Data from
feature extraction were identified by using backpropagation neural networks with architecture [17 7 1] and
traingdm as training functions. The results of network training showed a Mean Square Error (MSE) of
0,00025 while network testing showed an MSE value of 0,0464 and an accuracy of 80%. From the results
obtained, it could be concluded that this method could be used for early detection of hypertensive
retinopathy.
© 2019 Universitas Negeri Semarang
Alamat korespondensi:
Jurusan Fisika, Universitas Tanjungpura, Pontianak, Indonesia
E-mail: nurhasanah@physics.untan.ac.id
p-ISSN 2088-1509
e-ISSN 2684-978X