f

#### Ghostscript to Convert PDF to BMP?

Anyone with experience using Ghostscript to Convert PDF to BMP?  I use
variations on the following command line but the problem is how to come up
with a bmp that accurately reflects the content of the PDF, especially when
it is text.  Images are an issue also, but I am looking to make a bmp that
is as readable as possible.  Any suggestions on settings to try or even an
alternative toolkit?  Thanks.

gswin32c.exe -sOutputFile="Test.bmp" -sDEVICE=bmp256 -dNOPAUSE -dTextAlphaBits=4
-dGraphicsAlphaBits=4 -dLastPage=1 -r300 -g400x170 -dPDFFitPage -dBATCH
"Test.pdf"

--
Posted via a free Usenet account from http://www.teranews.com


 0
mkolenski (3)
11/16/2006 7:21:06 PM
comp.lang.postscript 3552 articles. 0 followers.

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I should have mentioned that we are scaling these documents DOWN to maybe
400 x 170 or so.

"Mark Kolenski" <mkolenski@omtool.com> wrote in message
news:455cad42$0$21101$88260bb3@free.teranews.com... > Anyone with experience using Ghostscript to Convert PDF to BMP? I use > variations on the following command line but the problem is how to come up > with a bmp that accurately reflects the content of the PDF, especially > when > it is text. Images are an issue also, but I am looking to make a bmp that > is as readable as possible. Any suggestions on settings to try or even an > alternative toolkit? Thanks. > > gswin32c.exe -sOutputFile="Test.bmp" -sDEVICE=bmp256 -dNOPAUSE -dTextAlphaBits=4 > -dGraphicsAlphaBits=4 -dLastPage=1 -r300 -g400x170 -dPDFFitPage -dBATCH > "Test.pdf" > > > > > -- > Posted via a free Usenet account from http://www.teranews.com > -- Posted via a free Usenet account from http://www.teranews.com   0 mkolenski (3) 11/16/2006 7:25:34 PM "Mark Kolenski" <mkolenski@omtool.com> wrote: >I should have mentioned that we are scaling these documents DOWN to maybe >400 x 170 or so. Except in rare cases, I wouldn't expect any text to be readable but large headlines. Is the quality noticeably different than if you open a PDF in Adobe Reader, and size the window to be 400 x 170? ---------------------------------------- Aandi Inston quite@dial.pipex.com http://www.quite.com Please support usenet! Post replies and follow-ups, don't e-mail them.   0 quite (1321) 11/16/2006 7:54:48 PM Thanks for your reply. Yeah, I've been thinking that there's only so much we can expect out of so few pixels. I still wasn't completely clear with my question. We actually take an original 8-1/2 x 11 document and make 3 pdf's out of it: top, middle, and bottom. This is done on a server. It is each of these that we are resizing to 400 x 170 bmp's for display on a device running embedded Java. When we open the original document (or the 1/3's) the quality is great, but what we get in the bmp is as you said virtually unreadable. We used to go to 300 x 150 but we have new real estate on the newer display device we are using so going to the bigger size actually made a lot of it almost readible. So, I'm trying to see if there is any way to squeeze more out of it. We can't really afford the memory (nor do we have the screen size) to make it much bigger. I'm also wondering if there is some sort of thumbnail or icon technology that we might be able to leverage. "Aandi Inston" <quite@dial.pipex.con> wrote in message news:455cc1dd.2532402221@read.news.uk.uu.net... > "Mark Kolenski" <mkolenski@omtool.com> wrote: > >>I should have mentioned that we are scaling these documents DOWN to maybe >>400 x 170 or so. > > Except in rare cases, I wouldn't expect any text to be readable but > large headlines. > > Is the quality noticeably different than if you open a PDF in Adobe > Reader, and size the window to be 400 x 170? > ---------------------------------------- > Aandi Inston quite@dial.pipex.com http://www.quite.com > Please support usenet! Post replies and follow-ups, don't e-mail them. > -- Posted via a free Usenet account from http://www.teranews.com   0 mkolenski (3) 11/16/2006 11:07:22 PM "Mark Kolenski" <mkolenski@omtool.com> wrote in message news:455cad42$0$21101$88260bb3@free.teranews.com...
> Anyone with experience using Ghostscript to Convert PDF to BMP?  I use
> variations on the following command line but the problem is how to come up
> with a bmp that accurately reflects the content of the PDF, especially when
> it is text.  Images are an issue also, but I am looking to make a bmp that
> is as readable as possible.  Any suggestions on settings to try or even an
> alternative toolkit?  Thanks.
>
> gswin32c.exe -sOutputFile="Test.bmp" -sDEVICE=bmp256 -dNOPAUSE -dTextAlphaBits=4
> -dGraphicsAlphaBits=4 -dLastPage=1 -r300 -g400x170 -dPDFFitPage -dBATCH
> "Test.pdf"

As Aandi has already pointed out, 400x170 is not many pixels for a displaying
a full size page of text.

Ghostscript's bmp256 uses a very limited palette of colors. To compensate for
the limited palette, ghostscript will often halftone non saturated colors. This
probably makes things worse for your situation.

I recommend using another device like bmp16m (24 bit rgb) which will
eliminate the problems caused by the limited color palette.

Ghostscript's 256 color output devices (like bmp256) do not attempt to
optimize the choice of colors in the palette to produce the best output. There
are other packages which will attempt optimize the output pallette for the
best image quality.

If you need to produce output with only a 256 color palette, I suggest that you
create 24 bit RGB using ghostscript (bmp16m, ppmraw, tiff24nc, etc) and then
post process the output with another application to produce the final output.


 0
11/17/2006 1:22:26 AM
Hi Mark,

Maybe you should consider outputting the PS to SVG or EMF/WMF. That way
you'll have scalable images with vector data.

Note, though, that outputting to SVG might not be a viable long-term
strategy. Adobe has decided to discontinue support for Adobe SVG Viewer
starting from January 1, 2008.

Cheers

--
macropod
[MVP - Microsoft Word]

"Mark Kolenski" <mkolenski@omtool.com> wrote in message
news:455cae52$0$21096$88260bb3@free.teranews.com... > I should have mentioned that we are scaling these documents DOWN to maybe > 400 x 170 or so. > > "Mark Kolenski" <mkolenski@omtool.com> wrote in message > news:455cad42$0$21101$88260bb3@free.teranews.com...
> > Anyone with experience using Ghostscript to Convert PDF to BMP?  I use
> > variations on the following command line but the problem is how to come
up
> > with a bmp that accurately reflects the content of the PDF, especially
> > when
> > it is text.  Images are an issue also, but I am looking to make a bmp
that
> > is as readable as possible.  Any suggestions on settings to try or even
an
> > alternative toolkit?  Thanks.
> >
> >
gswin32c.exe -sOutputFile="Test.bmp" -sDEVICE=bmp256 -dNOPAUSE -dTextAlphaBi
ts=4
> > -dGraphicsAlphaBits=4 -dLastPage=1 -r300 -g400x170 -dPDFFitPage -dBATCH
> > "Test.pdf"
> >
> >
> >
> >
> > --
> > Posted via a free Usenet account from http://www.teranews.com
> >
>
>
>
> --
> Posted via a free Usenet account from http://www.teranews.com
>


 0
invalid171 (7008)
11/18/2006 5:14:44 AM

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HTTP://www.dwgconverter.com DwgConverter 2.0 is a batch converter tool that converts DWG/DXF R2.5 ~ R2004 files to BMP, JPG, TIFF, GIF, PNG, EMF and WMF images without the need of AutoCAD. It can also convert DWG/DXF files to vectory PDF file.And supports AutoCAD DWG/DXF File Version Conversion. Key Features: Supported input file formats: CAD drawings (DXF and DWG). Can export images in the following formats: JPG/JPEG, TIF/TIFF, BMP, GIF, PNG, WMF, EMF etc. Supported Dwg R2.5 ~ R2005 formats and. Supported converts DWG and DXF files to vector PDF files Convert DWG/DXF files in batches. Don't require any products from AutoDesk, it is completely standalone technology. Supported Input areas: Model Space, Paper Space and Layouts. XRefs / SHX / TTF supported, Color to pen width mapping supported. Supported Entity width conversion, Adjustable color depth, Adjustable background color, Adjustable export accuracy, and Adjustable size of output image. TIFF compression supported. Fast convert DWG/DXF files to image files with high quality. Different conversion in one batch. Can convert batches of different formats CAD drawings (dxf and dwg) to one type of image in one time. Can convert DWG/DXF to several type of image in one time. Can set output folder for all the image files before converting. Can add a file, several files, and all files in a folder. It supports auto name. User can save options settings for friendly recall and reuse. ...

Need Convert DWG/DXF to BMP ,GIF,JPG, EMF, or PDF ???
HTTP://www.dwgconverter.com DwgConverter 2.0 is a batch converter tool that converts DWG/DXF R2.5 ~ R2004 files to BMP, JPG, TIFF, GIF, PNG, EMF and WMF images without the need of AutoCAD. It can also convert DWG/DXF files to vectory PDF file.And supports AutoCAD DWG/DXF File Version Conversion. Key Features: Supported input file formats: CAD drawings (DXF and DWG). Can export images in the following formats: JPG/JPEG, TIF/TIFF, BMP, GIF, PNG, WMF, EMF etc. Supported Dwg R2.5 ~ R2005 formats and. Supported converts DWG and DXF files to vector PDF files Convert DWG/DXF files in batches. ...

Is there any open Souce project in Java to convert html, doc, pdf to BMP
Hi All Is there any open Souce project in C/C++/Java to convert html, doc, pdf to BMP? I would like to get the Bitmap image of contents rendered in the Web Browser ActiveX control. I want to get the good quality image so I don't want to use images from the view (rendered content). Is there any alternate method? Please Help... Thanks in Advance. ...

Web resources about - Ghostscript to Convert PDF to BMP? - comp.lang.postscript

Ghostscript - Wikipedia, the free encyclopedia
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Commands tagged mate - commandlinefu.com
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Cygwin Gold Stars
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