Re: Fix (device interface) : Provide an access to image data filter for devices.

"Igor V. Melichev" <[email protected]> Tue, 30 Dec 2008 13:45:23 +0300
Newsgroups gmane.comp.printing.ghostscript.patches
Message-ID <[email protected]>
Ray,

Thanks for information, I'll account it.

Igor.

----- Original Message ----- 
From: "Ray Johnston" <[email protected]>
To: "Igor V. Melichev" <[email protected]>
Cc: "'tech'" <[email protected]>; <[email protected]>
Sent: Monday, December 29, 2008 7:35 PM
Subject: Re: Fix (device interface) : Provide an access to image data filter 
for devices. xefitra


> Igor,
>
> Our code base does not include a GPL JBIG2 encoder -- it is only
> supported with the optional (extra license cost) Luratech JBIG2
> module.
>
> I think that for monochrome images, CCITT-G4 is MUCH faster than
> JBIG2, even when using the optional Luratech encoder. While
> JBIG2 compression can be superior to G4, I think we can get by
> with G4 and avoid the performance penalty and the requirement
> for the Luratech JBIG2 encoder.
>
> Regards,
> Ray
> ------------------------------------------------------------------------
>
> Igor V. Melichev wrote:
>> For doing that the clist writer needs to know
>> whether the image should be packed with a DCT, Flate or JBig2 filter.
>
>
>