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From "Arvind Sareen" <arvind_sar...@hotmail.com>
Subject RE: How to overlap 2 images generated using JPEGTranscoder
Date Fri, 11 Oct 2002 07:55:25 GMT

Hi Thomas,

I will try with PNG.


>From: Thomas E Deweese <thomas.deweese@kodak.com>
>Reply-To: "Batik Users" <batik-users@xml.apache.org>
>To: Batik Users <batik-users@xml.apache.org>
>Subject: RE: How to overlap 2 images generated using JPEGTranscoder
>Date: Thu, 10 Oct 2002 07:52:26 -0400
> >>>>> "AS" == Arvind Sareen <arvind_sareen@hotmail.com> writes:
>Hi Arvind,
>AS> Thanks for the suggestion but i need to make JPEG files because
>AS> ultimately I have to put zooming and panning as well as access X
>AS> and Y co-ordinates from the JPEG files.
>     Why can't you do all these things with PNG files?
>AS> If there is any other way I can meet all these points. Please let
>AS> me know so that I can proceed on those lines.
>     There is no standard way to express transparency in JPEG.  If you
>were incredibly desperate you could create seperate mask images (as 1
>band JPEG's) and mask the JPEG files.  But I don't understand why you
>can't just use PNG here...
> >> From: Thomas E Deweese <thomas.deweese@kodak.com> Reply-To: "Batik
> >> Users" <batik-users@xml.apache.org> To: Batik Users
> >> <batik-users@xml.apache.org> Subject: RE: How to overlap 2 images
> >> generated using JPEGTranscoder Date: Wed, 9 Oct 2002 07:40:05 -0400
> >>
> >> >>>>> "AS" == Arvind Sareen <arvind_sareen@hotmail.com>
> >>
>AS> I have created 2 svg files and then converted them to images using
>AS> JPEGTranscoder. Now when I call these 2 images in another svg
>AS> file. The file which is called in the last is displayed whereas
>AS> the file below it is not displayed.  Can anybody provide me with a
>AS> solution or workaround to above problem.
> >>  Use PNG. JPEG doesn't support transparency so both images are
> >> fully opaque.  PNG does support opacity so the top image will allow
> >> the bottom image to show through any place where you haven't drawn
> >> stuff.
> >>
>AS> Regards
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