Re: [GD-DEVEL] trasparent image width antialiasing

----- Original Message ----- 
From: "Pierre" <[email protected]>
To: "yagyog" <[email protected]>
Cc: <[email protected]>
Sent: Thursday, February 01, 2007 12:35 PM
Subject: Re: [GD-DEVEL] trasparent image width antialiasing


> Hi,
>
> On 1/30/07, yagyog <[email protected]> wrote:
>> ----- Original Message -----
>> From: "Pierre" <[email protected]>
>> To: "yagyog" <[email protected]>
>> Cc: <[email protected]>
>> Sent: Tuesday, January 30, 2007 3:48 PM
>> Subject: Re: [GD-DEVEL] trasparent image width antialiasing
>>
>>
>> > On 1/30/07, yagyog <[email protected]> wrote:
>> >> I have a problem, Excused but I do not speak English
>> >>
>> >>
>> >> I have in input one image png with antialising
>> >> with uniform solid background
>> >>
>> >> I would want
>> >>
>> >> 1) to eliminate the background
>> >> 2) recreate the channel alpha in order not to lose the antialising on 
>> >> the
>> >> text
>> >>
>> >> It is possible?
>> >> you can give me of the information ?
>> >>
>> >> I try this code but not work:
>> >>
>> >> //
>> >> //load a, load b  and create test
>> >> //
>> >> a = myLoadPng("a.png");
>> >> b = myLoadPng("b.png");
>> >
>> > Can you give us a link to the images a.png and b.png please?
>> >
>> > --Pierre
>> >
>> Yes
>> the color is changed but ,
>> it does not change nothing
>>
>> http://www.yag.altervista.org/varius/a.png
>> http://www.yag.altervista.org/varius/b.png
>> my result
>> http://www.yag.altervista.org/varius/test.png
>
> You have to use the alpha component in your image. So the blending
> will be done when you copy a or b over test

>. But if the original  images do not contain any alpha components
Exact! :(

, the anti aliasing being
> done against a given color (green and yellow in your case), you will
> have a visible aliasing.
>
Excuse I have not understood well
you could makes to understand me better. even with of the code