Enhancing the Power of CNN Using Data Augmentation Techniques for Odia Handwritten Character Recognition

Table 2

Database size after augmentation and splitting information.

Augmentation method	NITROHCS v1.0 handwritten database for Odia character				ISI image database of handwritten oriya numerals
	Original database		Expanded database		Original database		Expanded database
	Training	Testing	Training	Testing	Training	Testing	Training	Testing
Translation	10528	4512	94752	4512	4970	1000	44730	1000
Rotation	10528	4512	31584	4512	4970	1000	14910	1000
Scaling	10528	4512	21056	4512	4970	1000	9940	1000
Elastic deformation	10528	4512	21056	4512	4970	1000	9940	1000
Gaussian noise	10528	4512	21056	4512	4970	1000	9940	1000
Color inversion	10528	4512	21056	4512	4970	1000	9940	1000