procedure GrayToColor(Bmp:TBitmap);
var
i,j,uG:integer;
begin
Bmp.PixelFormat:=pf24Bit;
for j:=0 to Bmp.Height-1 do
begin
p:=Bmp.Scanline[j];
for i:=0 to Bmp.Width-1 do
begin
uG:=p[3*i];
if (0<uG) and (uG<63) then
begin
p[3*i+2]:=0;
p[3*i+1]:=254-4*uG;
p[3*i]:=255;
end;
if (64<=uG) and (uG<127) then
begin
p[3*i+2]:=0;
p[3*i+1]:=4*uG-254;
p[3*i]:=510-4*uG;
end;
if (128<=uG) and (uG<191) then
begin
p[3*i+2]:=4*uG-510;
p[3*i+1]:=255;
p[3*i]:=0;
end;
if (192<=uG) and (uG<=255) then
begin
p[3*i+2]:=255;
p[3*i+1]:=1022-4*uG;
p[3*i]:=0;
end;
end;
end;
end;
