phatch-dev team mailing list archive

[Nadia Alramli <nadiana@xxxxxxxxx>]

Hi Stani,

>
> This made me think it would be a nice addition to the "colour to
> alpha" to provide a "Select" parameter which has the options:
> - By colour (behaviour as it is now)
> - Top Left
> - Top Right
> - Bottom Left
> - Bottom Right
> This makes the action more flexible for batch processing images with
> different colours.
> What do you think?


That is actually a great idea, I'll make the necessary changes.

Regards,
Nadia



>
> Stani
>
> ---------- Forwarded message ----------
> From: Laura & Edward Cannon <cannon.el@xxxxxxxxx>
> Date: Fri, May 29, 2009 at 5:03 PM
> Subject: Re: [Image-SIG] remove an image background using PIL
> To: image-sig@xxxxxxxxxx
>
>
> One way to get rid of a single color background is to get the
> background color (look at the upper left pixel) and then compare every
> pixel to it. If they are the same, make it transparent, otherwise
> leave it be. This obviously only works if nothing in the foreground is
> colored the same as the background, but I have had good success with
> this sort of method in the pygame world for making sprites.
>
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