[PD] [GEM-dev] proper alpha channels in GEM?

[B. Bogart]

Hi Patrice,

ImageMagick on my debian etch machine does exactly what your wanting it
to, I suppose perhaps you have an older version of imageMagick?

The attached screenshot shows my imageMagick version, and that it does
indeed work for me.

Tested in Gem and it indeed works.

Not sure what is wrong on your end.

.b.

Patrice Colet wrote:
> Hello Ben, Cyrille, I answer to both for not flooding the list.
> 
> cyrille henry a écrit :
>> imagemagick is quite strange with tiff export. you have to manually
>> add some option in order to have a valid tiff file.
>> you can find the correct option somwhere on the net.
>>
>> then, Gem load this file with no problem.
> 
>  I didn't find any option that enables the alpha channel in tiff files,
> I've tried -channel RGBA -matte, -alpha, ... there is no hint on the net
> for that.
> 
> B. Bogart a écrit :
>> I did a quick test and GIMP will convert a transparent PNG to TIF fine.
>> I don't have Gem working on this machine to test loading the tif, but I
>> can confirm it shows transparency. "convert" did do something strange to
>> the png file when converting to tif I can see...
>>
>> send me your tif if you still can't get it to work and I'll see if I can
>> confirm your troubles.
>>
>> .b.
>>
> 
> I'll use the batch mode of gimp since IM can't do this job, attached are
> three images, thesource.png, theresult.tiff, whatIwouldliketohave.tif
> 
> 
> 
> 
> ------------------------------------------------------------------------
> 
> _______________________________________________
> PD-list at iem.at mailing list
> UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list


-------------- next part --------------
A non-text attachment was scrubbed...
Name: Screenshot.png
Type: image/png
Size: 191560 bytes
Desc: not available
URL: <http://lists.puredata.info/pipermail/pd-list/attachments/20071023/3b0ebcd6/attachment.png>