Mat normalize

function TFloatMatrix.Normalize(Alpha:Single=0.0; Beta:Single=1.0): TFloatMatrix;
var
  Lo,Hi,oldRange,newRange:Single;
  X,Y,W,H: Int32;
begin
  H := High(Self);
  W := High(Self[0]);
  SetLength(Result, H+1,W+1);

  Self.MinMax(Lo,Hi);  //returns the smallest and largest values
  oldRange := Hi-Lo;
  newRange := Beta-Alpha;
  for Y:=0 to H do
    for X:=0 to W do
      Result[Y,X] := (Self[Y,X] - lo) / oldRange * newRange + Alpha;
end;