A New Data Model for the Privacy Protection of Medical Images

Algorithm 2

An expand-free EVCS algorithm.

	Data: A secret image , block size , and cover images
	Result: share images dispatched to participants
	the size of the secret image and two cover images
	a collection of the number of black pixel in recovery secret black
	a collection of the number of black pixel in basis matrix,
	for in range do
	funcall
	funcall
	end
	for in rangedo
	the color block of , is interpreted as white or black pixels
	the color block of is interpreted as white or black pixels
	= all the matrics obtained by permuting the columns of
	a random,
	for each row in do
	end
	end