Coverless Steganography Based on Motion Analysis of Video

Algorithm 2

Information hiding.

	Input: video index database , secret information bitstream
	Output: mapping index set , number of index items m
(1)	Padding the secret information bitstream:
(2)	Divide to m segments
(3)	For i = 1 : m
(4)	Search the corresponding index item and update the index set as
(5)	End for
(6)	Send the mapping index set Im to the receiver