Thread Subject: Help me to implement ths algo in MATLAB

Hi,
   I want to implement the following Equations in MATLAB
to find hori
& Vert Gradient.

DH = | x(i , j-2) + x(i ,,j+2) - 2x(i, j) | + | x(i,,j-
1) - x(i,,j
+1) |


DV = | x(i-2, j) + x(i+2,,j) - 2x(i, j) | + | x(i-1, j) -
 x(i+1,,j)
|


If(DH+35< DV)


   G={ [ x(i,,j-1) + x(i,,j+1) ] /2 } + { [ 2x(i, j) -
 x(i , j-2)
- x(i ,,j+2) ]/4}

"Gracelin alshiya" <gracelin@mathworks.com> wrote in message <flocgb
$4pu$1@fred.mathworks.com>...
> Hi,
> I want to implement the following Equations in MATLAB
> to find hori
> & Vert Gradient.
>
> DH = | x(i , j-2) + x(i ,,j+2) - 2x(i, j) | + | x(i,,j-
> 1) - x(i,,j
> +1) |
>
> DV = | x(i-2, j) + x(i+2,,j) - 2x(i, j) | + | x(i-1, j) -
> x(i+1,,j)
> |
>
> If(DH+35< DV)
>
> G={ [ x(i,,j-1) + x(i,,j+1) ] /2 } + { [ 2x(i, j) -
> x(i , j-2)
> - x(i ,,j+2) ]/4}
--------
  These expressions don't look like simple gradients to me. Could you please
explain them?

  Also you might explain what you mean by the double commas, the vertical
lines, and the straight and curly brackets. Most of these have very specific
meanings in the Matlab language, but it looks as if you mean something very
different by them.

Roger Stafford