S. R. Yahya, K. Omar, S. N. H. Sheikh Abdullah, and A. Sophian, “Image Enhancement Background for High Damage Malay Manuscripts using Adaptive Threshold Binarization”, Int. J. Adv. Sci. Eng. Inf. Technol., vol. 8, no. 4-2, pp. 1552–1564, Sep. 2018.