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#591 closed defect (fixed)

The Sign(x) function in the text is as follows,
if (x>=0), Sign(x)= 1,
otherwise if (x<0), Sign(x)= -1

However, the Sign(x) function for edgeIdx should be
if (x>0), Sign(x)= 1,
otherwise if (x==0), Sign(x)= 0
otherwise if (x<0), Sign(x)= -1

Therefore, we should define a new Sign1(x) function for edgeIdx,

edgeIdx = 2 + sum_k( Sign1( recPicture[ xC + i, yC + j ] –

recPicture[ xC + i + hPos[ k ], yC + j + vPos[ k ] ] ) ) with k = 0..1 (8-350)

where Sign1(x) function is as follows,
if (x>0), Sign1(x)= 0,
otherwise if (x==0), Sign1(x)= 0
otherwise if (x<0 ), Sign1(x)= -1

Typo fix:
if (x>0), Sign1(x)= 1,
otherwise if (x==0), Sign1(x)= 0
otherwise if (x<0 ), Sign1(x)= -1

This is fixed in JCTVC-I1003 d5 (v6).

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