Improved Arabic Alphabet Characters Classification Using Convolutional Neural Networks (CNN)

Table 6

Experimental results on the Hijja and AHCD through noise injection.

	Type of noise injection with using Nadam algorithm
	Gaussian noise		Salt-and-pepper noise		Speckle noise
	Training accuracy	Testing accuracy	Training accuracy	Testing accuracy	Training accuracy	Testing accuracy
AHCD	99.17	96.78	99.16	97.15	99.14	96.82
Hijja	97.18	89.85	92.96	90.10	91.32	89.73