Abd Halim, S. et al. 2018. The Effect of CLAHE and Gamma Correction in Enhancement of Digital Radiographic Image for Weld Imperfection Detection. International Journal of Engineering & Technology. 7, 4.36 (Dec. 2018), 1588–1592. DOI:https://doi.org/10.14419/ijet.v7i4.36.29381.