Re: tiff:photometric and CCITT compression

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On Mon, 16 Oct 2023, frechefuchs via Graphicsmagick-help wrote:

> Am 12.10.23 um 15:29 schrieb Bob Friesenhahn:
>> On Wed, 11 Oct 2023, frechefuchs via Graphicsmagick-help wrote:
>>>
>>> To be sure, you mean removing the code that disables CCITT compression
>>> if minis/black/ is requested?
>>
>> Yes, since that is what you said was causing the issue.
>
> Ha, that's right – in a way.  Because, I was far from expecting
> uncommenting that code is all that is needed. :-)  Apparently, all the
> necessary machinery to write 'minisblack' CCITT images is already in
> place.  Which makes sense, in hindsight.
>
> I can confirm that the attached patch enables GM to write CCITT encoded

Thanks for looking into this.  I expect that the checks in GM are 
correct according to published standards.  If the rejected parameters 
are produced due to user requests, then removing the checks seems OK.

Bob
-- 
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/
Public Key,     http://www.simplesystems.org/users/bfriesen/public-key.txt
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