PDF grayscale conversion (OT)

PDF grayscale conversion (OT)

[Alan Bowen]

I have used to ConTeXt to generate a hefty PDF file with b/w text and   
color images. Is there a way to convert this file to a PDF file with b/ 
w text and grayscale images (256 shades)? I know I could always  
convert the images first and then reset the book, but I was wondering  
if there was a simpler more direct way before I start doing that.  
(There are over 70 images.)

Best, Alan 
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Re: PDF grayscale conversion (OT)

[luigi scarso]

On Tue, Mar 10, 2009 at 3:38 AM, Alan Bowen <acbowen@princeton.edu> wrote:
> I have used to ConTeXt to generate a hefty PDF file with b/w text and  color
> images. Is there a way to convert this file to a PDF file with b/w text and
> grayscale images (256 shades)? I know I could always convert the images
> first and then reset the book, but I was wondering if there was a simpler
> more direct way before I start doing that. (There are over 70 images.)
Maybe with ghostscript

-- 
luigi
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Re: PDF grayscale conversion (OT)

[Yue Wang]

try convert (in image magick)

On Tue, Mar 10, 2009 at 10:38 AM, Alan Bowen <acbowen@princeton.edu> wrote:
> I have used to ConTeXt to generate a hefty PDF file with b/w text and  color
> images. Is there a way to convert this file to a PDF file with b/w text and
> grayscale images (256 shades)? I know I could always convert the images
> first and then reset the book, but I was wondering if there was a simpler
> more direct way before I start doing that. (There are over 70 images.)
>
> Best,
> Alan___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: PDF grayscale conversion (OT)

[Yue Wang]

On Tue, Mar 10, 2009 at 2:38 PM, Yue Wang <yuleopen@gmail.com> wrote:
> try convert (in image magick)
convert book.pdf -colorspace Gray book.jpg
might help. (it will generate book-xx.jpg)

Yue Wang
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Re: PDF grayscale conversion (OT)

[Alan Bowen]

Luigi, Yue—many thanks. I will look into with both Ghostscript and  
ImageMagick to see what I can do.

Best, Alan

On Mar 10, 2009, at 02;14,12 , luigi scarso wrote:

> On Tue, Mar 10, 2009 at 3:38 AM, Alan Bowen <acbowen@princeton.edu>  
> wrote:
>> I have used to ConTeXt to generate a hefty PDF file with b/w text  
>> and  color
>> images. Is there a way to convert this file to a PDF file with b/w  
>> text and
>> grayscale images (256 shades)? I know I could always convert the  
>> images
>> first and then reset the book, but I was wondering if there was a  
>> simpler
>> more direct way before I start doing that. (There are over 70  
>> images.)
> Maybe with ghostscript
>
> -- 
> luigi

On Mar 10, 2009, at 02;43,11 , Yue Wang wrote:

> On Tue, Mar 10, 2009 at 2:38 PM, Yue Wang <yuleopen@gmail.com> wrote:
>> try convert (in image magick)
> convert book.pdf -colorspace Gray book.jpg
> might help. (it will generate book-xx.jpg)
>
> Yue Wang
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an  
> entry to the Wiki!
>
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive  : https://foundry.supelec.fr/projects/contextrev/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________

___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : https://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________