Ftl-CoV19: A Transfer Learning Approach to Detect COVID-19

Algorithm 2

Vectorized convolutional layer generalized matrix multiplication (GEMM).

	Input: Input image Img, Filter Filter, Filter Size fs, Max Filter Count nc, Filter stride s, Padding p
	Output: Filter map of corresponding size
(1)	col_matrix ← Empty Matrix
	filter_map_size ← Output filter map size (formula (1))
(2)	for row in [0 … filter_map_size]:
(3)	for col in [0 … filter_map_size]:
(4)	sub_patch = image[(rows): (rows + fs − 1), (cols): (cols + fs − 1)]
(5)	Add flattened sub_patch to col_matrix as column
(6)	end for
(7)	end for
(8)	filter_map = col_matrix  Filter
(9)	Return filter_map
	Here, represents matrix dot product