merge two png pic

[cocobear]

On Aug 4, 3:24 pm, News123 <news... at free.fr> wrote:
> Hi,
>
>
>
>
>
> cocobear wrote:
> >> > >> Map = Image.new("RGB", (x,y))
> >> > >> Map.paste(im, box)
> >> > >> Map.paste(im1,box)
>
> >> > >> Map = Map.convert("L", optimize=True, palette=Image.ADAPTIVE)
>
> >> > >> But if thetwopngpicis too big , or if I have tomergemorepic
> >> > >> together, I will get MemoryError:
>
> >>>>> > >> >>> Image.new("RGB",(44544,38656))
>
> >> What do you want to do with such a big image? You will run into the same
> >> limitation when you are trying to display it.
>
> > I want to download a map from google map with high precision
>
> For me it sounds strange to handle such big files.
>
> Is the map you download from Google really that big?
> Mostly Google maps uses normally tiles of sizes 256x256 pixel, wich you
> have to compose to get the  big image.
>

The map I downloaded from Google is small(256x256). These small maps
will compose a big image.



> If your problem is to combine tiles with different palettes, then you
> should pobably look at a way to  'unify' the palette of all tiles befor
> combining them.
>

I think it is impossible to 'unify' all this tiles.


> Being no expert of PIL I don't know whether this is easily possible though?
>
> bye
>
> N