Algorithm 1 Spatial Augmentation Procedure for Data Up-Scaling
1	function Spatial Augmentation (S)
	Input: Number of sensor elements S in the sensing unit OR Length of raw data vectors
	Output: The spatially augmented data vectors compatible with the input to the 2D-CNN
2	BEGIN
3	IF S is a perfect square number:
4	Represent the data vector in the squared array of size: [√(S) × √(S)]
5	Following stage 2 as discussed, data vector spatially augmented to the size: [(3 × √(S)) × (3 × √(S))]
6	ELSE
7	Find the number of required virtual sensors to make the total number of sensor elements equal to the nearest perfect square number, say α
8	Following stage 1 virtual sensors were included to make the total number of sensor elements in the sensing unit, [(S + α)]
9	Represent the obtained data vectors in the squared array of size: [√(S + α) × √(S + α)]
10	Following stage 2 as discussed, data vector spatially augmented to the size [(3×√(S + α)) × (3×√(S + α))]
11	STOP