|| || || || || || || ||

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Global functions for NgbOp2d

General structure of the implementation:

• FuncNgbOp2dDispatch does the image by calling:
• FuncNgbOp2d_Row(variation) does a row of the image by calling:
• FuncNgbOp2d_Pix_variation does the neighbourhood of one pixel

Schematically:

FuncNgbOp2dDispatch  -->  _Row(P1,Cnum)  -->  _Pix_P1Cnum
                       |
                       |
                       +->  _Row(P1,Loop)  -->  _Pix_P1Loop
                       |                    /
                       +->  _Row(P2,Loop)  -->  _Pix_P2Loop
                       |
                       +->  _Row(PN,Loop)  -->  _Pix_P1Loop

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