%Function:	Creates a vertical shadow of the object (in both directions).

%TemLibName:	VerticalShadow

%CNNModel:	Single-layer, CT-CNN

%Given:		Static binary image P

%Setting:	Input:P, IniState:P, Boundary:Zero-flux

%Output:	Binary image representing the vertical shadow of the objects in P taken upward and downward simultaneously.

%Timing:	-

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Neighborhood: 1

Feedback:
0  1  0
0  2  0
0  1  0

current: 2