Array Comparison

Question

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I have two vector V and myFilter. V contains the value of a variable in a 2D domain.

Suppose the 2D domain is a rectangle with the lower left corner (x1,y1) and upper right corner (x2,y2). This domain is discretized by 80 points in x and 60 points in y direction.

The elements of V is written rowwise from the (x1,y1) to (x2,y1) then moves to the next line and put them in the vector V.

My filter is a BW picture named myPicture. myFilter is obtained by myFilter=myPicture(:) which means myPicture is columnwise saved in myFilter.

Is there any efficient way of making V and myFilter consistent with each other so that V(i) and myFilter(i) refers to the same point in the 2D domain?

Thanks.